BSEH SS Agriculture cheat sheet

Agriculture is defined as the science, art and business of producing crops and raising livestock for human use; its scope includes production, processing, marketing, and natural resource stewardship.

Natural resources relevant to agriculture: land, water, air, biodiversity, forests, and fossil energy; renewable (solar, wind, biomass) vs non-renewable (mineral fertilizers, fossil fuels, groundwater in some aquifers).

Sustainability rests on three pillars: economic viability, social equity, and environmental integrity; a practice is sustainable only if it meets present needs without compromising future productivity.

Carrying capacity = the maximum population or stocking level an ecosystem can support indefinitely without degradation; overgrazing and soil mining exceed it.

Tragedy of the commons: shared open-access resources (grazing land, groundwater, fisheries) tend to be overexploited unless regulated by rules, quotas, or property rights.

Agroforestry, crop rotation, conservation tillage, and integrated nutrient management are recognized sustainable land-management practices that reduce erosion and build soil organic matter.

Carbon footprint of a farm = total greenhouse gas emissions (CO2, CH4, N2O) expressed as CO2-equivalent per unit product; N2O from fertilizers has ~265-298 times the global warming potential of CO2.

Ecosystem services from agriculture include pollination, nutrient cycling, water filtration, carbon sequestration, and habitat provision; these are largely non-market benefits.

Five soil-forming factors (Jenny): climate, organisms, relief/topography, parent material, and time; CLORPT is the mnemonic.

Soil texture classes follow the USDA triangle: sand, loamy sand, sandy loam, loam, silt loam, clay loam, silty clay, clay; textural class is fixed, structure is manageable.

Bulk density (g/cm3) = oven-dry soil mass / total volume; porosity (%) = (1 - bulk density / particle density) x 100, with particle density assumed 2.65 g/cm3.

Soil pH governs nutrient availability: most nutrients are maximally available at pH 6.0-7.0; below pH 5.5 aluminum toxicity and phosphorus fixation increase; lime raises pH, elemental sulfur or gypsum lowers it.

Cation exchange capacity (CEC) in cmol(+)/kg measures the soil's capacity to hold exchangeable cations; humus and 2:1 clays (montmorillonite) have high CEC, kaolinite and sand low CEC.

Essential plant nutrients: 17 elements; macronutrients N, P, K, Ca, Mg, S; micronutrients Fe, Mn, Zn, Cu, B, Mo, Cl, Ni; C, H, O from air and water.

Law of the minimum (Liebig): yield is limited by the nutrient in shortest supply relative to need; excess of other nutrients cannot compensate.

Universal soil loss equation: A = R x K x LS x C x P, where A is predicted annual soil loss, R rainfall erosivity, K soil erodibility, LS slope length/steepness, C cover management, P support practice.

Soil conservation measures: contour ploughing, terracing, strip cropping, windbreaks/shelterbelts, mulching, check dams, and grassed waterways; conservation tillage leaves at least 30% residue cover.

Cropping intensity (%) = (sum of area cropped in all seasons / net sown area) x 100; multiple cropping raises it above 100%.

Cropping systems: sole cropping, mixed cropping (two or more crops sown together with no row arrangement), intercropping (row arrangement), sequence cropping, and relay cropping.

Intercropping advantage is measured by Land Equivalent Ratio (LER) = sum of (intercrop yield / sole-crop yield) for each component; LER > 1 indicates a yield advantage.

Crop rotation with legumes fixes atmospheric nitrogen via Rhizobium symbiosis and breaks pest and disease cycles; cereal-legume rotation is a standard practice.

Package of practices for a crop specifies variety, seed rate, spacing, sowing time and method, nutrient dose and timing, irrigation schedule, weed control, and plant protection.

Seed rate (kg/ha) = (plant population per ha x test weight in g) / (1000 x germination % x purity %), adjusted for field establishment losses.

Critical growth stages for irrigation: crown root initiation in wheat, flowering and pod filling in pulses and oilseeds, tasseling and silking in maize, panicle initiation in rice.

Rice is grown in lowland (transplanted puddled) and upland (direct-seeded aerobic) systems; puddling reduces percolation but degrades soil structure for subsequent crops.

Horticulture branches: pomology (fruits), olericulture (vegetables), floriculture (flowers), arboriculture (trees), and landscape horticulture.

Propagation methods: sexual (seed) and asexual/vegetative (cutting, layering, grafting, budding, tissue culture); vegetative propagation preserves clonal cultivar traits.

Grafting requires cambial contact between scion and rootstock; the stock supplies roots and sometimes disease resistance or size control, the scion supplies the fruiting canopy.

Nursery media should be porous, well-drained and sterile; a common mix is soil, sand and organic matter (e.g., 1:1:1) with pH near 6.0-7.0 for most seedlings.

Polyhouse/plastic tunnel use modifies temperature, humidity and light; shade nets (35-75%) reduce light intensity and heat stress during summer propagation.

Pruning and training: heading back, thinning out, and canopy shaping improve light interception and air movement; pruning severity affects vegetative vs reproductive balance.

Fruit crop examples by type: tropical (mango, banana, papaya), subtropical (citrus, guava, litchi), temperate (apple, pear, peach).

Postharvest handling of horticultural produce: careful harvesting at correct maturity, pre-cooling, grading, and cool storage reduce respiration and ethylene damage; climacteric fruits (banana, mango) ripen after harvest.

Integrated Pest Management (IPM) hierarchy: prevention and cultural methods, mechanical/physical control, biological control, and chemical control as a last resort, guided by monitoring and economic thresholds.

Economic threshold level (ETL) is the pest density at which control measures must be applied to prevent the pest from reaching the economic injury level; action below ETL is uneconomic.

Insect mouthparts determine pesticide choice: chewing insects (caterpillars, beetles) respond to stomach poisons; sucking insects (aphids, hoppers) require systemic or contact insecticides.

Major insect orders in agriculture: Lepidoptera (larvae chew), Hemiptera (sucking bugs), Coleoptera (beetles), Diptera (flies), Orthoptera (grasshoppers), Thysanoptera (thrips).

Plant disease triangle: disease occurs only when a susceptible host, a virulent pathogen, and a favourable environment coincide; the disease tetrahedron adds a time/human factor.

Koch's postulates establish a pathogen as the cause of a disease: constant association, isolation in pure culture, reproduction of symptoms on reinoculation, and re-isolation.

Pesticide resistance management: rotate modes of action, avoid sub-lethal doses, and use non-chemical controls to delay resistance; repeated use of one active ingredient selects resistant populations.

Key storage and field pests: rodents and grain weevils in storage; aphids, whiteflies and leafhoppers as vectors of plant viruses; fungal blights and rusts favoured by high humidity.

Ruminant digestion: four-compartment stomach (rumen, reticulum, omasum, abomasum); rumen microbes ferment fibre into volatile fatty acids and synthesize microbial protein and B vitamins.

Feed classification: roughages (green fodder, hay, straw) and concentrates (grains, oilcakes); a balanced ration supplies energy, protein, minerals and vitamins in required proportions.

Total Digestible Nutrients (TDN) and Crude Protein (CP) are the standard measures of energy and protein value used in ration formulation.

Dairy milk composition (cow): roughly 3.5-4.5% fat, 3.2-3.5% protein, 4.6-5.0% lactose, 0.7% minerals; buffalo milk has higher fat (about 6-7%).

Milk testing: specific gravity by lactometer (normal ~1.026-1.032) detects adulteration with water; fat by Gerber method; somatic cell count indicates udder health (mastitis).

Clean milk production: wash udder, discard foremilk, use sanitized utensils, cool milk rapidly to below 4-5 degrees C, and avoid antibiotic residues.

Common cattle diseases: foot-and-mouth disease (viral, vesicular lesions), mastitis (bacterial udder infection), and brucellosis (zoonotic, causes abortion).

Breeding terms: gestation period about 280 days in cattle, 305-day standard lactation yield, dry period 60 days; artificial insemination uses frozen-thawed semen.

Tillage implements: primary (mouldboard plough, disc plough, chisel plough) break and invert soil; secondary (harrow, cultivator, roller) refine the seedbed.

Field capacity and field efficiency: field capacity (ha/h) = (implement width in m x speed in km/h) / 10; field efficiency = effective field capacity / theoretical field capacity x 100.

Irrigation water requirement = evapotranspiration (ETc) + percolation and seepage losses - effective rainfall; ETc = reference ET (ETo) x crop coefficient (Kc).

Irrigation efficiency (%) = water beneficially used / water applied x 100; drip and sprinkler systems typically exceed 85-90%, surface flooding is lower.

Duty of water = area irrigated per unit discharge of water; delta = total depth of water (cm) required by a crop over its base period.

Post-harvest losses arise from respiration, moisture, temperature, pests and handling damage; drying grain to safe moisture (about 12-14%) and cool storage limit losses.

Moisture content determination: oven-drying at 105 degrees C to constant weight for grain; moisture meters are calibrated against this reference method.

Farm power sources: human, animal, mechanical (tractor), electrical and renewable; tractor power take-off (PTO) drives implements such as threshers and sprayers.

Law of demand: quantity demanded falls as price rises, other things equal; price elasticity of demand = % change in quantity / % change in price; inelastic if absolute value < 1.

Farm cost concepts: fixed costs (land rent, depreciation) do not vary with output; variable costs (seed, fertilizer, labour) do; total cost = fixed + variable.

Gross margin = gross output value - variable costs; net farm income = gross income - total costs; benefit-cost ratio = present value of benefits / present value of costs.

Returns to scale: increasing, constant or decreasing depending on how output changes with a proportional change in all inputs; economies of scale lower unit cost as farm size rises.

Marketing functions: assembling, grading, processing, packaging, storage, transport, and financing; marketing margin = consumer price - producer price.

Extension teaching methods: individual (farm visit, office call), group (demonstration, field day, method demonstration), and mass (radio, television, print, social media).

Diffusion of innovations: innovators, early adopters, early majority, late majority, laggards; adoption follows an S-shaped curve over time.

Agricultural price support and minimum support price mechanisms stabilize farm incomes; cooperatives improve bargaining power and input access for smallholders.

Mendel's laws: segregation of alleles and independent assortment of genes on different chromosomes; dominance describes allele interaction at one locus.

Genotype is the genetic constitution, phenotype is the observable expression resulting from genotype x environment interaction.

Breeding methods: pure-line selection, mass selection, hybridization (pedigree, bulk, backcross), mutation breeding, and heterosis breeding for hybrid cultivars.

Backcross breeding transfers a single desirable gene (often disease resistance) into an adapted recurrent parent over repeated backcrosses.

Seed certification classes: breeder seed, foundation seed, registered seed, certified seed; each generation increases quantity while preserving genetic purity.

Seed quality tests: germination percentage, purity percentage, moisture content, and vigour; seed lot label records these values and the test date.

Genetic purity can be checked by grow-out tests and molecular markers; isolation distance prevents cross-pollination contamination in seed production fields.

Heritability = genetic variance / total phenotypic variance; high heritability traits respond quickly to selection; quantitative traits are usually polygenic.

Farm records: physical records (inventory, production) and financial records (cash book, ledger, balance sheet, income statement); accurate records enable enterprise budgeting.

Enterprise budget lists expected returns, variable costs and fixed costs per unit area or animal; comparing gross margins guides enterprise selection.

Partial budget evaluates a single change: added returns plus reduced costs versus added costs plus reduced returns; a positive net change favours adoption.

Depreciation methods: straight line = (cost - salvage value) / useful life; declining balance applies a fixed percentage to the book value each year.

Break-even point = total fixed costs / (unit price - variable cost per unit); it shows the output needed to cover all costs.

Entrepreneurship in agriculture: value addition (grading, processing, packaging), agri-tourism, custom hiring of machinery, and direct marketing shorten the supply chain.

Business plan components: product description, market analysis, production plan, financial projections, risk assessment, and management team.

Risk management tools: crop insurance, diversification, contract farming, forward contracts, and maintaining working-capital reserves.

Mendel's laws: segregation of alleles and independent assortment of genes on different chromosomes; dominance describes allele interaction at one locus.

Genotype is the genetic constitution, phenotype is the observable expression resulting from genotype x environment interaction.

Breeding methods: pure-line selection, mass selection, hybridization (pedigree, bulk, backcross), mutation breeding, and heterosis breeding for hybrid cultivars.

Backcross breeding transfers a single desirable gene (often disease resistance) into an adapted recurrent parent over repeated backcrosses.

Seed certification classes: breeder seed, foundation seed, registered seed, certified seed; each generation increases quantity while preserving genetic purity.

Seed quality tests: germination percentage, purity percentage, moisture content, and vigour; seed lot label records these values and the test date.

Genetic purity can be checked by grow-out tests and molecular markers; isolation distance prevents cross-pollination contamination in seed production fields.

Heritability = genetic variance / total phenotypic variance; high heritability traits respond quickly to selection; quantitative traits are usually polygenic.

Farm records: physical records (inventory, production) and financial records (cash book, ledger, balance sheet, income statement); accurate records enable enterprise budgeting.

Enterprise budget lists expected returns, variable costs and fixed costs per unit area or animal; comparing gross margins guides enterprise selection.

Partial budget evaluates a single change: added returns plus reduced costs versus added costs plus reduced returns; a positive net change favours adoption.

Depreciation methods: straight line = (cost - salvage value) / useful life; declining balance applies a fixed percentage to the book value each year.

Break-even point = total fixed costs / (unit price - variable cost per unit); it shows the output needed to cover all costs.

Entrepreneurship in agriculture: value addition (grading, processing, packaging), agri-tourism, custom hiring of machinery, and direct marketing shorten the supply chain.

Business plan components: product description, market analysis, production plan, financial projections, risk assessment, and management team.

Risk management tools: crop insurance, diversification, contract farming, forward contracts, and maintaining working-capital reserves.

Mendel's laws: segregation of alleles and independent assortment of genes on different chromosomes; dominance describes allele interaction at one locus.

Genotype is the genetic constitution, phenotype is the observable expression resulting from genotype x environment interaction.

Breeding methods: pure-line selection, mass selection, hybridization (pedigree, bulk, backcross), mutation breeding, and heterosis breeding for hybrid cultivars.

Backcross breeding transfers a single desirable gene (often disease resistance) into an adapted recurrent parent over repeated backcrosses.

Seed certification classes: breeder seed, foundation seed, registered seed, certified seed; each generation increases quantity while preserving genetic purity.

Seed quality tests: germination percentage, purity percentage, moisture content, and vigour; seed lot label records these values and the test date.

Genetic purity can be checked by grow-out tests and molecular markers; isolation distance prevents cross-pollination contamination in seed production fields.

Heritability = genetic variance / total phenotypic variance; high heritability traits respond quickly to selection; quantitative traits are usually polygenic.

Farm records: physical records (inventory, production) and financial records (cash book, ledger, balance sheet, income statement); accurate records enable enterprise budgeting.

Enterprise budget lists expected returns, variable costs and fixed costs per unit area or animal; comparing gross margins guides enterprise selection.

Partial budget evaluates a single change: added returns plus reduced costs versus added costs plus reduced returns; a positive net change favours adoption.

Depreciation methods: straight line = (cost - salvage value) / useful life; declining balance applies a fixed percentage to the book value each year.

Break-even point = total fixed costs / (unit price - variable cost per unit); it shows the output needed to cover all costs.

Entrepreneurship in agriculture: value addition (grading, processing, packaging), agri-tourism, custom hiring of machinery, and direct marketing shorten the supply chain.

Business plan components: product description, market analysis, production plan, financial projections, risk assessment, and management team.

Risk management tools: crop insurance, diversification, contract farming, forward contracts, and maintaining working-capital reserves.

Crop seasons in the tropics and subtropics: kharif (monsoon-sown), rabi (winter-sown), and zaid (summer); crop calendars depend on rainfall and temperature.

Sowing methods: broadcasting, drilling, dibbling, transplanting, and ridge-and-furrow planting; row spacing is set by crop canopy and machinery width.

Weed control: mechanical (hoeing, weeding), cultural (crop rotation, competitive cultivars, mulching), biological, and chemical (pre-emergence and post-emergence herbicides).

Herbicide selectivity depends on dose, timing, crop and weed morphology; crop rotation with different herbicide modes of action reduces resistance.

Irrigation scheduling by soil moisture depletion: irrigate when available soil moisture falls to a crop-specific fraction (often 50-60%) of total available water.

Nutrient application: basal dose at sowing plus top dressing at critical growth stages; split application of nitrogen reduces leaching losses.

Yield estimation: yield (kg/ha) = (plants per ha x grains/ears per plant x test weight in g) / 1000.

Organic farming relies on compost, green manure, crop residues, and biological pest control; certification requires a conversion period and documented records.

Vegetable production systems: kitchen garden, market garden, truck garden, and protected cultivation under polyhouse or shade net.

Vegetable seed rate depends on crop: high for direct-sown leafy vegetables, low for transplanted crops such as tomato, chilli and brinjal.

Fruit orchard establishment: site and soil selection, layout systems (square, rectangular, quincunx, hexagonal, contour), pit size, and planting density.

Canopy management in orchards: removal of water shoots, centre opening, and light pruning improve fruit colour and reduce disease pressure.

Floriculture crops include rose, chrysanthemum, marigold, gladiolus, tuberose and jasmine; loose flowers are sold by weight, cut flowers by stem grade.

Nursery hygiene: sterilized media, clean containers, weed-free benches, and regular monitoring reduce damping-off and root rot in seedlings.

Micropropagation (tissue culture) produces disease-free clonal plants rapidly; hardening of plantlets before field transfer is essential for survival.

Harvest maturity indices: days from planting, fruit firmness, colour change, total soluble solids (TSS), and starch-iodine test for some fruits.

Insect metamorphosis: complete (egg-larva-pupa-adult, e.g., butterflies, beetles) and incomplete (egg-nymph-adult, e.g., grasshoppers, aphids); larvae are usually the damaging stage.

Pest monitoring: sweep net, light trap, pheromone trap, and visual scouting; trap catches indicate adult emergence and help time interventions.

Biological control agents: predators (ladybird beetles, lacewings), parasitoids (Trichogramma wasps), and pathogens (Bacillus thuringiensis, Beauveria bassiana).

Fungicide classes: protectant (applied before infection) and systemic (absorbed into plant tissues); rotation of active ingredients delays resistance.

Common disease symptoms: leaf spots, blights, wilts, rusts, mildews, galls, and mosaic patterns; accurate diagnosis separates biotic from abiotic causes.

Viral diseases are spread by vectors (aphids, whiteflies, thrips) and by mechanical transmission; vector control and clean planting material are primary management tools.

Pesticide formulation types: EC (emulsifiable concentrate), WP (wettable powder), SC (suspension concentrate), and granules; label rates and pre-harvest intervals must be followed.

Safety and storage: pesticides stored in original labelled containers, away from food and children; protective clothing and correct disposal of empty containers prevent poisoning.

Cattle and buffalo breeds: dairy types (Holstein-Friesian, Jersey, Murrah buffalo) and draft/dual-purpose types; crossbreeding combines local adaptability with exotic yield.

Feeding standards use dry matter intake and nutrient density; green fodder, dry roughage and concentrate are balanced to meet maintenance and production needs.

Milking hygiene: foremilk examination, clean dry udder, sanitized teat cups, and post-milking teat dip reduce mastitis incidence.

Milk preservation: chilling to 4 degrees C, pasteurization (heating to 63 degrees C for 30 min or 72 degrees C for 15 s), and sterilization extend shelf life.

Poultry production: broilers for meat (6-7 weeks to market) and layers for eggs; lighting, ventilation and biosecurity are critical management factors.

Animal health: vaccination schedules, deworming, and quarantine of new animals prevent disease outbreaks; record-keeping supports traceability.

Manure management: composting and biogas digestion convert dung into fertilizer and energy, reducing environmental pollution.

Breeding soundness: heat detection, correct timing of insemination (about 12 hours after standing heat), and pregnancy diagnosis improve conception rates.

Tractor selection depends on implement draft, soil type and field size; matching implement width to available power avoids overloading.

Draft of tillage implements increases with soil moisture, depth and speed; energy requirement is expressed as kW per metre width.

Irrigation methods: surface (flood, furrow, basin), subsurface, sprinkler, and drip; drip delivers water to the root zone with high efficiency and reduces weed growth.

Pump power (kW) = (discharge in m3/s x total head in m x water density x gravity) / (1000 x pump efficiency).

Water measurement: weirs, flumes, and flow meters quantify irrigation water; knowing discharge and duration gives applied volume.

Post-harvest operations: threshing, winnowing, cleaning, grading, drying, storage, and milling; each step can add losses if poorly done.

Storage structures: warehouses, silos, and hermetic bags; aeration and moisture control prevent mould, insect infestation and mycotoxin development.

Farm machinery economics: fixed costs (depreciation, interest, insurance, shelter) plus variable costs (fuel, lubricant, repairs, labour); custom hiring spreads fixed costs.

Production function relates inputs to output; marginal product is the change in output from one additional unit of input; profit is maximized where marginal value product equals marginal factor cost.

Elasticity of supply measures responsiveness of quantity supplied to price; short-run supply is less elastic than long-run supply.

Cost curves: average fixed cost falls continuously, average variable cost is U-shaped, and marginal cost intersects average total cost at its minimum.

Market structure: perfect competition, monopolistic competition, oligopoly and monopoly; agricultural producers often face near-competitive markets with volatile prices.

Marketing channels: producer to consumer, producer to retailer, producer to wholesaler to retailer, and cooperative marketing; each intermediary adds margin.

Extension programme planning: needs assessment, objective setting, plan of work, implementation, and evaluation; participatory approaches improve adoption.

Communication in extension: sender, message, channel, receiver and feedback; two-way communication is more effective than one-way broadcasting.

Farm credit: short-term (crop loans), medium-term (machinery), and long-term (land development); interest rate, repayment schedule and collateral determine feasibility.

Cell division: mitosis produces genetically identical cells for growth; meiosis produces haploid gametes with recombination through crossing over.

Mendelian ratios: monohybrid F2 phenotypic ratio 3:1, genotypic ratio 1:2:1; dihybrid F2 phenotypic ratio 9:3:3:1 with independent assortment.

Qualitative traits are controlled by one or few genes and show discrete classes; quantitative traits are polygenic and show continuous variation.

Hybrid seed production requires male sterility systems or manual emasculation and controlled pollination; isolation distance protects purity.

Mutation breeding uses physical (gamma rays) or chemical mutagens to create variability; selection follows in subsequent generations.

Seed germination test: place counted seeds on moist substrate under controlled temperature, count normal seedlings, and express as percentage of seeds tested.

Seed storage: low moisture (below 12%), low temperature and pest-proof containers maintain viability; orthodox seeds tolerate drying, recalcitrant seeds do not.

Varietal release process: evaluation in multilocation trials, distinctness-uniformity-stability (DUS) testing, and value-for-cultivation-and-use (VCU) assessment.

Farm planning steps: resource inventory, enterprise selection, budgeting, implementation, monitoring, and adjustment; planning horizon depends on crop cycles.

Cash flow statement tracks timing of inflows and outflows; a farm can be profitable but fail due to poor liquidity.

Farm inventory valuation: cost price, market price, or net realizable value; consistent method allows year-to-year comparison.

Labour management: peak labour demand coincides with sowing, weeding, and harvesting; mechanization and labour scheduling reduce peak costs.

Value chain analysis identifies where value is added and where margins are captured; farmers capturing processing or retail margins earn more.

Cooperative and farmer producer organizations pool produce, reduce input costs, and improve bargaining power in markets.

Insurance and credit risk: crop insurance protects against yield loss, while credit discipline maintains access to future loans.

Record-based decision making: comparing actual yields and costs with budgets identifies inefficiencies and guides the next season's plan.

Soil organic matter improves water-holding capacity, cation exchange capacity and structure; it declines with continuous tillage and residue removal.

Fertilizer recommendation is based on soil test values, crop requirement and targeted yield; balanced fertilization avoids nutrient imbalance.

Nitrogen transformations: mineralization, nitrification, denitrification, volatilization and leaching; urease and nitrification inhibitors reduce losses.

Phosphorus is relatively immobile in soil; placement near the root zone improves uptake; mycorrhizae enhance phosphorus acquisition.

Potassium supports water regulation and disease resistance; sandy soils with low CEC require split applications.

Green manuring (e.g., sunhemp, dhaincha) adds nitrogen and organic matter; legume cover crops fix atmospheric nitrogen.

Soil salinity and sodicity: electrical conductivity indicates salinity, exchangeable sodium percentage indicates sodicity; gypsum reclaims sodic soils.

Integrated nutrient management combines organic manures, biofertilizers and mineral fertilizers to sustain yield and soil health.

Fruit tree training systems: central leader, open centre, modified leader and espalier; the system chosen depends on species growth habit and light needs.

Pollination requirements: some fruit crops need cross-pollination (apple, pear) while others are self-fruitful; pollinizer varieties must overlap in bloom.

Vegetable nursery management: raised beds, sterilized soil, and proper spacing prevent damping-off and produce sturdy transplants.

Protected cultivation: polyhouse, shade net, and plastic mulch modify temperature, humidity, light and weeds; crop selection must match the structure.

Flower crop harvesting: cut at correct bud stage, condition stems in water, and cool promptly to extend vase life.

Postharvest treatments for fruits and vegetables: pre-cooling, edible coatings, controlled atmosphere storage, and ethylene management reduce spoilage.

Irrigation in horticulture: drip with fertigation delivers water and nutrients precisely and reduces foliar disease.

Orchard floor management: cover crops, mulching and mowing control weeds and conserve soil moisture without excessive tillage.

IPM components: pest identification, monitoring, threshold-based decisions, cultural, mechanical, biological and chemical control, and evaluation.

Economic injury level is the pest population that causes economic loss; the economic threshold is set below it to allow timely action.

Pesticide application: correct nozzle, droplet size, spray volume and timing determine efficacy; drift and runoff cause environmental contamination.

Pesticide label information: active ingredient, formulation, dose, target pest, pre-harvest interval, re-entry interval, and safety precautions.

Resistance management: rotate modes of action, use mixtures judiciously, and integrate non-chemical tactics to reduce selection pressure.

Biological control: conserve natural enemies, augment with releases, and use selective pesticides that spare beneficials.

Disease management: resistant varieties, clean seed, crop rotation, sanitation, and fungicide timing based on weather forecasts.

Quarantine and phytosanitary measures prevent introduction and spread of invasive pests and pathogens across regions.

Ration formulation: meet energy and protein needs first, then balance minerals and vitamins; feed cost is the largest share of livestock production cost.

Rumen function: fibre stimulates chewing and saliva production; abrupt diet changes cause acidosis and should be avoided.

Water is the most critical nutrient; lactating animals require large volumes and continuous access.

Common diseases: mastitis, foot rot, bloat, milk fever and ketosis; prevention includes hygiene, balanced feeding and regular veterinary checks.

Vaccination and biosecurity: scheduled vaccination, isolation of sick animals, and controlled visitor access reduce disease spread.

Poultry housing: adequate space, ventilation, litter management and lighting programme optimize growth and egg production.

Milk quality: somatic cell count, total bacterial count and absence of antibiotic residues determine market acceptance.

Breeding records: heat dates, service dates, calving dates and milk yield data support selection and culling decisions.

Implement draft (kN) depends on soil resistance, width and depth; matching tractor power to implement prevents excessive wheel slip and fuel use.

Field capacity (ha/h) = (width in m x speed in km/h) / 10; effective capacity accounts for turns, loading and downtime.

Irrigation efficiency: application, conveyance and storage losses reduce overall efficiency; drip and sprinkler systems improve application efficiency.

Crop water requirement: ETc = ETo x Kc; effective rainfall reduces the irrigation requirement.

Drainage: surface and subsurface drainage remove excess water; waterlogging reduces aeration and root function.

Threshing and cleaning: cylinder speed, concave clearance and sieve settings affect grain damage and losses.

Drying: sun drying and mechanical dryers reduce moisture to safe storage levels; excessive heat damages seed viability.

Storage: hermetic storage, fumigation and aeration protect grain from insects and mould; regular inspection detects hotspots.

Demand and supply determine market price; shifts in either curve change equilibrium price and quantity.

Elasticity: price elasticity of demand, income elasticity, and cross-price elasticity guide pricing and policy decisions.

Farm income measures: gross income, net income, and family labour income; off-farm income often stabilizes farm households.

Extension methods: demonstrations, field days, farmer field schools, radio and digital advisory; participatory methods increase adoption.

Adoption process: awareness, interest, evaluation, trial and adoption; relative advantage, compatibility, complexity and observability affect the rate.

Marketing efficiency: fewer intermediaries and better infrastructure reduce marketing costs and increase producer share.

Cooperatives and contract farming: collective bargaining and assured markets reduce price risk for smallholders.

Agricultural policy instruments: subsidies, minimum support prices, credit, insurance and extension services influence production decisions.

Gene action: additive, dominance and epistasis; additive variance responds to selection, dominance variance supports hybrid vigour.

Selection methods: mass selection, pure-line selection, pedigree method, bulk method and backcross method; choice depends on trait inheritance.

Hybrid vigour (heterosis) is exploited in maize, sorghum, pearl millet and many vegetables through hybrid seed production.

Seed production: isolation distance, roguing, field inspection and seed testing maintain genetic and physical purity.

Seed certification agencies inspect fields and test seed lots; certified seed carries a label with germination, purity and moisture data.

Seed treatments: fungicides, insecticides and biofertilizer coatings protect germinating seeds and seedlings.

Seed storage: orthodox seeds store at low moisture and low temperature; viability declines with high humidity and temperature.

Intellectual property and variety protection: plant variety protection encourages breeding while allowing farmer seed saving under specified conditions.

Farm budgeting: whole-farm budget, enterprise budget and partial budget; each serves a different planning decision.

Break-even analysis: fixed costs divided by contribution margin per unit gives the break-even output.

Depreciation: straight-line and declining-balance methods allocate machinery and building costs over useful life.

Cash flow and profit differ: profit is revenue minus expenses, cash flow tracks actual cash timing and liquidity.

Risk management: diversification, insurance, contracts and reserves reduce income variability.

Value addition: grading, processing, packaging and branding increase product value and farmer income.

Entrepreneurship: opportunity identification, business planning, resource mobilization, marketing and record keeping.

Farm records: production, financial and inventory records support informed decisions and access to credit.

Crop rotation benefits: breaks pest and disease cycles, improves soil fertility, and reduces weed pressure; legumes add nitrogen.

Tillage: primary tillage loosens soil, secondary tillage prepares seedbed; conservation tillage reduces erosion and preserves moisture.

Sowing time: timely sowing avoids heat or frost stress and matches crop growth to favourable weather.

Plant population: optimum density balances competition and resource use; too high or too low reduces yield.

Weed management: integrated approach combining cultural, mechanical, biological and chemical methods is most effective.

Nutrient management: soil testing, crop requirement and split application improve efficiency and reduce losses.

Irrigation scheduling: critical stages and soil moisture monitoring guide timing and amount.

Harvesting: timely harvest at physiological maturity reduces losses and maintains quality.

Nursery establishment: site selection, layout, media preparation, and irrigation facilities determine seedling quality.

Propagation: seeds for annuals and rootstocks; cuttings, layering, grafting and budding for clonal fruit and ornamental plants.

Grafting: compatible scion and rootstock, cambial alignment, and proper tying ensure union success.

Media sterilization: solarization, steam or chemical treatment reduces soil-borne pathogens in nursery media.

Seedling management: thinning, hardening, and timely transplanting improve field establishment.

Floriculture: crop selection based on market demand, season and postharvest life; grading and packaging affect price.

Fruit orchard management: pruning, training, nutrition and pest management determine yield and quality.

Postharvest: harvesting at correct maturity, grading, pre-cooling and cool storage extend shelf life.

Pest identification: correct identification determines the appropriate management tactic; misidentification leads to ineffective control.

Monitoring: scouting, traps and weather data support threshold-based decisions.

Cultural control: resistant varieties, crop rotation, sanitation, and planting date adjustment reduce pest pressure.

Biological control: conservation and augmentation of natural enemies; selective pesticides protect beneficial insects.

Chemical control: correct product, dose, timing and application method; follow label instructions and pre-harvest intervals.

Disease diagnosis: symptoms, signs and laboratory tests distinguish biotic diseases from nutrient deficiencies and environmental injury.

Integrated disease management: resistant varieties, clean seed, crop rotation, sanitation and fungicides as needed.

Pesticide safety: protective equipment, safe storage and disposal prevent human and environmental harm.

Livestock production systems: extensive grazing, semi-intensive and intensive stall feeding; feed availability drives system choice.

Feed resources: green fodder, dry roughage, concentrates, mineral mixture and water; balanced ration improves productivity.

Dairy management: milking hygiene, udder health, and cooling of milk maintain quality.

Reproduction: heat detection, timely insemination, gestation length and calving interval determine herd productivity.

Health management: vaccination, deworming, and quarantine prevent disease; early treatment reduces losses.

Poultry: brooding, feeding, lighting and biosecurity determine growth and egg production.

Manure management: composting and biogas reduce pollution and provide fertilizer and energy.

Record keeping: milk yield, feed intake, reproduction and health records support management decisions.

Tractor and implement matching: power requirement depends on implement width, depth and soil type.

Field efficiency: effective field capacity divided by theoretical field capacity, expressed as a percentage.

Irrigation systems: surface, sprinkler and drip; selection depends on crop, soil, water availability and terrain.

Water requirement: ETc = ETo x Kc; irrigation scheduling based on soil moisture and crop stage.

Pump and power: discharge, head and efficiency determine power requirement.

Post-harvest: threshing, cleaning, drying, storage and processing; each step affects quality and losses.

Storage: moisture control, temperature management and pest control preserve grain quality.

Farm machinery economics: fixed and variable costs; custom hiring improves utilization.

Production economics: input-output relationships, cost of production and profit maximization.

Demand and supply: price determination and elasticity guide marketing and policy decisions.

Farm management: planning, budgeting, record keeping and resource allocation.

Marketing: channels, margins, efficiency and price risk; cooperatives and contract farming improve market access.

Extension: communication methods, adoption process and participatory approaches.

Credit: short, medium and long-term loans; repayment capacity and collateral determine access.

Insurance: crop and livestock insurance reduce risk and stabilize income.

Policy: subsidies, support prices and extension services influence farm decisions.

Mendelian genetics: segregation and independent assortment; genotypic and phenotypic ratios.

Quantitative genetics: polygenic traits, heritability and selection response.

Breeding methods: selection, hybridization, backcross, mutation and hybrid breeding.

Seed production: isolation, roguing, field inspection and testing maintain purity and quality.

Seed testing: germination, purity, moisture and vigour tests determine seed lot quality.

Seed storage: low moisture and temperature preserve viability; orthodox vs recalcitrant seeds.

Variety release: multilocation trials, DUS and VCU testing.

Seed treatment: fungicide, insecticide and biofertilizer coatings protect seeds.

Farm planning: resource inventory, enterprise selection, budgeting and monitoring.

Records: production, financial and inventory records support decisions.

Budgeting: enterprise, partial and whole-farm budgets guide resource allocation.

Break-even analysis: fixed costs divided by contribution margin per unit.

Depreciation: straight-line and declining-balance methods.

Risk management: diversification, insurance, contracts and reserves.

Value addition: grading, processing, packaging and branding increase income.

Entrepreneurship: opportunity identification, business planning and marketing.

Soil formation: climate, organisms, relief, parent material and time.

Soil properties: texture, structure, bulk density, porosity, pH and CEC.

Soil fertility: essential nutrients, law of the minimum and balanced fertilization.

Soil conservation: contour ploughing, terracing, strip cropping, windbreaks and conservation tillage.

Cropping systems: sole, mixed, intercropping, sequence and relay cropping; LER measures advantage.

Crop production: seed rate, spacing, sowing time, nutrient and irrigation management.

Weed management: integrated cultural, mechanical, biological and chemical methods.

Harvest and post-harvest: timely harvest and proper storage reduce losses.

Horticulture branches: pomology, olericulture, floriculture and landscape horticulture.

Propagation: sexual and asexual methods; grafting, budding, cutting and layering.

Nursery management: media, sterilization, irrigation and seedling hardening.

Orchard management: layout, training, pruning, nutrition and pest management.

Protected cultivation: polyhouse, shade net and plastic mulch modify the environment.

Floriculture: crop selection, harvesting and postharvest handling.

Postharvest: maturity indices, pre-cooling, grading and cool storage.

Marketing: grading, packaging and direct marketing improve returns.

IPM: prevention, monitoring, thresholds, biological control and chemical control as last resort.

Insect identification: mouthparts, metamorphosis and damage symptoms guide control.

Disease triangle: host, pathogen and environment; disease management targets all three.

Cultural control: resistant varieties, rotation, sanitation and planting date.

Biological control: predators, parasitoids and pathogens; conserve natural enemies.

Chemical control: correct product, dose, timing and application; follow label and pre-harvest interval.

Resistance management: rotate modes of action and integrate non-chemical tactics.

Pesticide safety: protective equipment, safe storage and disposal.

Ruminant digestion: rumen fermentation of fibre; microbial protein synthesis.

Feed resources: roughage, concentrate, mineral mixture and water; balanced ration.

Dairy management: milking hygiene, udder health and milk cooling.

Reproduction: heat detection, insemination timing and calving interval.

Health management: vaccination, deworming and quarantine.

Poultry: brooding, feeding, lighting and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield, feed, reproduction and health records.

Tillage implements: primary and secondary; matching tractor power to implement.

Field capacity and efficiency: width x speed / 10; effective vs theoretical capacity.

Irrigation: surface, sprinkler and drip; ETc = ETo x Kc.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, cleaning, drying, storage and processing.

Storage: moisture and temperature control; hermetic storage and aeration.

Machinery economics: fixed and variable costs; custom hiring.

Water measurement: weirs, flumes and flow meters.

Production function: input-output relationship; marginal product and profit maximization.

Demand and supply: price determination and elasticity.

Cost concepts: fixed, variable, total, average and marginal cost.

Farm management: budgeting, records and resource allocation.

Marketing: channels, margins and efficiency; cooperatives and contract farming.

Extension: communication methods, adoption process and participatory approaches.

Credit: short, medium and long-term loans; repayment capacity.

Policy: subsidies, support prices and insurance.

Mendel's laws: segregation and independent assortment; monohybrid and dihybrid ratios.

Quantitative traits: polygenic inheritance and heritability.

Breeding methods: selection, hybridization, backcross, mutation and hybrid breeding.

Seed production: isolation distance, roguing and field inspection.

Seed testing: germination, purity, moisture and vigour.

Seed storage: low moisture and temperature; orthodox vs recalcitrant seeds.

Variety release: multilocation trials, DUS and VCU testing.

Seed treatment: fungicide, insecticide and biofertilizer coatings.

Farm planning: resource inventory, enterprise selection and budgeting.

Records: production, financial and inventory records.

Budgeting: enterprise, partial and whole-farm budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line and declining-balance methods.

Risk management: diversification, insurance and contracts.

Value addition: grading, processing and packaging.

Entrepreneurship: opportunity identification and business planning.

Cropping systems: sole, mixed, intercropping, sequence and relay cropping.

Land equivalent ratio: sum of intercrop/sole crop yield ratios; LER > 1 indicates advantage.

Crop rotation: breaks pest cycles and improves soil fertility; legumes fix nitrogen.

Sowing: seed rate, spacing, depth and time determine establishment.

Nutrient management: soil testing, balanced fertilization and split application.

Irrigation: critical growth stages and soil moisture monitoring.

Weed management: integrated cultural, mechanical, biological and chemical methods.

Harvest: timely harvest at physiological maturity reduces losses.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: seed and vegetative methods; grafting and budding for fruit crops.

Nursery: media, sterilization, irrigation and seedling hardening.

Orchard: layout, training, pruning and nutrition.

Protected cultivation: polyhouse and shade net.

Floriculture: crop selection, harvesting and postharvest handling.

Postharvest: maturity indices, pre-cooling, grading and storage.

Marketing: grading, packaging and direct marketing.

IPM: prevention, monitoring, thresholds, biological and chemical control.

Insect identification: mouthparts and metamorphosis guide control.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties, rotation and sanitation.

Biological control: predators, parasitoids and pathogens.

Chemical control: correct product, dose and timing; pre-harvest interval.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and safe storage.

Ruminant digestion: rumen fermentation and microbial protein synthesis.

Feed resources: roughage, concentrate and mineral mixture.

Dairy management: milking hygiene and milk cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding, feeding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage: primary and secondary implements.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip; ETc = ETo x Kc.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, cleaning, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination and elasticity.

Cost concepts: fixed, variable and total cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.

Mendel's laws: segregation and independent assortment.

Quantitative traits: polygenic inheritance and heritability.

Breeding methods: selection, hybridization and backcross.

Seed production: isolation and roguing.

Seed testing: germination, purity and moisture.

Seed storage: low moisture and temperature.

Variety release: DUS and VCU testing.

Seed treatment: fungicide and insecticide coatings.

Farm planning: resource inventory and budgeting.

Records: production and financial records.

Budgeting: enterprise and partial budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line and declining-balance methods.

Risk management: diversification and insurance.

Value addition: grading and processing.

Entrepreneurship: opportunity identification and business planning.

Soil formation factors: climate, organisms, relief, parent material and time.

Soil properties: texture, structure, pH and CEC.

Soil fertility: essential nutrients and balanced fertilization.

Soil conservation: contour ploughing, terracing and conservation tillage.

Cropping systems: intercropping and rotation.

Crop production: seed rate, spacing and nutrient management.

Weed management: integrated methods.

Harvest and storage: timely harvest and proper storage.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: sexual and asexual methods.

Nursery: media, sterilization and seedling hardening.

Orchard: layout, training and pruning.

Protected cultivation: polyhouse and shade net.

Floriculture: harvesting and postharvest handling.

Postharvest: maturity indices and cool storage.

Marketing: grading and packaging.

IPM: prevention, monitoring and thresholds.

Insect identification: mouthparts and metamorphosis.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties and rotation.

Biological control: predators and parasitoids.

Chemical control: correct dose and timing.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and storage.

Ruminant digestion: rumen fermentation.

Feed resources: roughage and concentrate.

Dairy management: milking hygiene and cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage implements: primary and secondary.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination.

Cost concepts: fixed and variable cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.

Mendel's laws: segregation and independent assortment.

Quantitative traits: polygenic inheritance.

Breeding methods: selection and hybridization.

Seed production: isolation and roguing.

Seed testing: germination and purity.

Seed storage: low moisture and temperature.

Variety release: DUS and VCU testing.

Seed treatment: fungicide and insecticide coatings.

Farm planning: resource inventory and budgeting.

Records: production and financial records.

Budgeting: enterprise and partial budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line method.

Risk management: diversification and insurance.

Value addition: grading and processing.

Entrepreneurship: opportunity identification.

Cropping systems: sole, mixed and intercropping.

Land equivalent ratio: LER > 1 indicates advantage.

Crop rotation: breaks pest cycles and improves fertility.

Sowing: seed rate and spacing.

Nutrient management: balanced fertilization.

Irrigation: critical growth stages.

Weed management: integrated methods.

Harvest: timely harvest reduces losses.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: seed and vegetative methods.

Nursery: media and seedling hardening.

Orchard: layout and pruning.

Protected cultivation: polyhouse and shade net.

Floriculture: harvesting and postharvest handling.

Postharvest: maturity indices and storage.

Marketing: grading and packaging.

IPM: prevention, monitoring and thresholds.

Insect identification: mouthparts and metamorphosis.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties and rotation.

Biological control: predators and parasitoids.

Chemical control: correct dose and timing.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and storage.

Ruminant digestion: rumen fermentation.

Feed resources: roughage and concentrate.

Dairy management: milking hygiene and cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage implements: primary and secondary.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination.

Cost concepts: fixed and variable cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.

Mendel's laws: segregation and independent assortment.

Quantitative traits: polygenic inheritance.

Breeding methods: selection and hybridization.

Seed production: isolation and roguing.

Seed testing: germination and purity.

Seed storage: low moisture and temperature.

Variety release: DUS and VCU testing.

Seed treatment: fungicide and insecticide coatings.

Farm planning: resource inventory and budgeting.

Records: production and financial records.

Budgeting: enterprise and partial budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line method.

Risk management: diversification and insurance.

Value addition: grading and processing.

Entrepreneurship: opportunity identification.

Soil formation factors: climate, organisms, relief, parent material and time.

Soil properties: texture, structure, pH and CEC.

Soil fertility: essential nutrients and balanced fertilization.

Soil conservation: contour ploughing and terracing.

Cropping systems: intercropping and rotation.

Crop production: seed rate and spacing.

Weed management: integrated methods.

Harvest and storage: timely harvest and proper storage.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: sexual and asexual methods.

Nursery: media and seedling hardening.

Orchard: layout and pruning.

Protected cultivation: polyhouse and shade net.

Floriculture: harvesting and postharvest handling.

Postharvest: maturity indices and storage.

Marketing: grading and packaging.

IPM: prevention, monitoring and thresholds.

Insect identification: mouthparts and metamorphosis.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties and rotation.

Biological control: predators and parasitoids.

Chemical control: correct dose and timing.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and storage.

Ruminant digestion: rumen fermentation.

Feed resources: roughage and concentrate.

Dairy management: milking hygiene and cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage implements: primary and secondary.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination.

Cost concepts: fixed and variable cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.

Mendel's laws: segregation and independent assortment.

Quantitative traits: polygenic inheritance.

Breeding methods: selection and hybridization.

Seed production: isolation and roguing.

Seed testing: germination and purity.

Seed storage: low moisture and temperature.

Variety release: DUS and VCU testing.

Seed treatment: fungicide and insecticide coatings.

Farm planning: resource inventory and budgeting.

Records: production and financial records.

Budgeting: enterprise and partial budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line method.

Risk management: diversification and insurance.

Value addition: grading and processing.

Entrepreneurship: opportunity identification.

Cropping systems: sole, mixed and intercropping.

Land equivalent ratio: LER > 1 indicates advantage.

Crop rotation: breaks pest cycles and improves fertility.

Sowing: seed rate and spacing.

Nutrient management: balanced fertilization.

Irrigation: critical growth stages.

Weed management: integrated methods.

Harvest: timely harvest reduces losses.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: seed and vegetative methods.

Nursery: media and seedling hardening.

Orchard: layout and pruning.

Protected cultivation: polyhouse and shade net.

Floriculture: harvesting and postharvest handling.

Postharvest: maturity indices and storage.

Marketing: grading and packaging.

IPM: prevention, monitoring and thresholds.

Insect identification: mouthparts and metamorphosis.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties and rotation.

Biological control: predators and parasitoids.

Chemical control: correct dose and timing.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and storage.

Ruminant digestion: rumen fermentation.

Feed resources: roughage and concentrate.

Dairy management: milking hygiene and cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage implements: primary and secondary.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination.

Cost concepts: fixed and variable cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.

Mendel's laws: segregation and independent assortment.

Quantitative traits: polygenic inheritance.

Breeding methods: selection and hybridization.

Seed production: isolation and roguing.

Seed testing: germination and purity.

Seed storage: low moisture and temperature.

Variety release: DUS and VCU testing.

Seed treatment: fungicide and insecticide coatings.

Farm planning: resource inventory and budgeting.

Records: production and financial records.

Budgeting: enterprise and partial budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line method.

Risk management: diversification and insurance.

Value addition: grading and processing.

Entrepreneurship: opportunity identification.

Soil formation factors: climate, organisms, relief, parent material and time.

Soil properties: texture, structure, pH and CEC.

Soil fertility: essential nutrients and balanced fertilization.

Soil conservation: contour ploughing and terracing.

Cropping systems: intercropping and rotation.

Crop production: seed rate and spacing.

Weed management: integrated methods.

Harvest and storage: timely harvest and proper storage.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: sexual and asexual methods.

Nursery: media and seedling hardening.

Orchard: layout and pruning.

Protected cultivation: polyhouse and shade net.

Floriculture: harvesting and postharvest handling.

Postharvest: maturity indices and storage.

Marketing: grading and packaging.

IPM: prevention, monitoring and thresholds.

Insect identification: mouthparts and metamorphosis.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties and rotation.

Biological control: predators and parasitoids.

Chemical control: correct dose and timing.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and storage.

Ruminant digestion: rumen fermentation.

Feed resources: roughage and concentrate.

Dairy management: milking hygiene and cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage implements: primary and secondary.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination.

Cost concepts: fixed and variable cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.

Mendel's laws: segregation and independent assortment.

Quantitative traits: polygenic inheritance.

Breeding methods: selection and hybridization.

Seed production: isolation and roguing.

Seed testing: germination and purity.

Seed storage: low moisture and temperature.

Variety release: DUS and VCU testing.

Seed treatment: fungicide and insecticide coatings.

Farm planning: resource inventory and budgeting.

Records: production and financial records.

Budgeting: enterprise and partial budgets.

Break-even analysis: fixed costs divided by contribution margin.

Depreciation: straight-line method.

Risk management: diversification and insurance.

Value addition: grading and processing.

Entrepreneurship: opportunity identification.

Cropping systems: sole, mixed and intercropping.

Land equivalent ratio: LER > 1 indicates advantage.

Crop rotation: breaks pest cycles and improves fertility.

Sowing: seed rate and spacing.

Nutrient management: balanced fertilization.

Irrigation: critical growth stages.

Weed management: integrated methods.

Harvest: timely harvest reduces losses.

Horticulture branches: pomology, olericulture and floriculture.

Propagation: seed and vegetative methods.

Nursery: media and seedling hardening.

Orchard: layout and pruning.

Protected cultivation: polyhouse and shade net.

Floriculture: harvesting and postharvest handling.

Postharvest: maturity indices and storage.

Marketing: grading and packaging.

IPM: prevention, monitoring and thresholds.

Insect identification: mouthparts and metamorphosis.

Disease triangle: host, pathogen and environment.

Cultural control: resistant varieties and rotation.

Biological control: predators and parasitoids.

Chemical control: correct dose and timing.

Resistance management: rotate modes of action.

Pesticide safety: protective equipment and storage.

Ruminant digestion: rumen fermentation.

Feed resources: roughage and concentrate.

Dairy management: milking hygiene and cooling.

Reproduction: heat detection and insemination timing.

Health management: vaccination and deworming.

Poultry: brooding and biosecurity.

Manure management: composting and biogas.

Record keeping: milk yield and health records.

Tillage implements: primary and secondary.

Field capacity: width x speed / 10.

Irrigation: surface, sprinkler and drip.

Pump power: discharge x head x density x gravity / efficiency.

Post-harvest: threshing, drying and storage.

Storage: moisture and temperature control.

Machinery economics: fixed and variable costs.

Water measurement: weirs and flow meters.

Production function: input-output relationship.

Demand and supply: price determination.

Cost concepts: fixed and variable cost.

Farm management: budgeting and records.

Marketing: channels and margins.

Extension: communication and adoption.

Credit: short, medium and long-term loans.

Policy: subsidies and support prices.