BGCSE Agricultural Science 1517 study guide
BGCSE Agricultural Science 1517 · Work through your exam, one topic at a time.
BGCSE Agricultural Science is a senior secondary subject examination taken at the end of the two-year BGCSE programme in Botswana. It suits learners who are considering further study in agriculture, animal science, horticulture or natural resource management, and those moving towards farm work, agribusiness or extension. The BGCSE Agricultural Science 1517 study guide has 10 sections and about 2,886 words.
01Soil Science and Soil Management
Soil is a three-phase system - mineral particles, organic matter, and pore space holding air and water. You must know the soil profile horizons (O organic, A topsoil, B subsoil/zone of accumulation, C weathered parent material, R bedrock) and how they differ in colour, texture and organic matter.
324 words, about 2 min02Crop Production and Agronomy
Crop production begins with land preparation: clearing, primary tillage (plough) to break the soil, secondary tillage (harrow, cultivator) to produce a fine, level seedbed, then planting. You must be able to describe row planting versus broadcasting and explain why row planting is preferred - accurate spacing, easier weeding, precise fertilizer placement and easy thinning.
306 words, about 2 min03Animal Production and Husbandry
Animal production rests on the digestive system. Ruminants (cattle, sheep, goats) have a four-chambered stomach - rumen, reticulum, omasum, abomasum - and rely on rumen microbes to digest fibre.
283 words, about 1 min04Animal Health and Disease Control
Health is not merely the absence of disease; it is the animal's ability to function normally. Learn normal ranges - cattle rectal temperature about 38–39 °C, pulse 60–70 beats per minute, respiration 15–30 breaths per minute; poultry about 41 °C.
272 words, about 1 min05Plant Protection and Pest Management
A pest is any organism damaging crops or stored produce. Classify pests as insects and mites, weeds, pathogens (fungi, bacteria, viruses), nematodes and vertebrates.
277 words, about 1 min06Farm Tools, Machinery and Structures
Hand tools are powered by the operator: hoe, rake, fork, mattock, trowel, hand sprayer, pruning saw, secateurs, wheelbarrow and watering can. Each has a correct use and a maintenance routine - clean after use, dry, oil metal surfaces, sharpen blades, replace handles, store under cover.
291 words, about 1 min07Farm Management, Records and Agricultural Economics
Farm management organises land, labour, capital and management to meet the farmer's goals. Know the four factors of production and be able to explain why management is usually the scarcest.
273 words, about 1 min08Agricultural Ecology and Natural Resource Conservation
An ecosystem is a community of organisms interacting with each other and with their physical environment. Learn the food chain (producer → primary consumer → secondary consumer → decomposer), the trophic levels, and the rule that only about 10% of energy passes to the next level - which is why top predators are few and why eating lower on the chain is more efficient.
279 words, about 1 min09Horticulture and Crop Improvement
Horticulture is the intensive cultivation of fruits (pomology), vegetables (olericulture) and flowers (floriculture). You must describe nursery practice: site selection, sterilised media, seedbeds or trays, shading, watering, pricking out, hardening off, and transplanting at the right spacing and depth.
270 words, about 1 min10Practical Skills and Field Work
Practical work is assessed on technique, safety and accuracy, not only on the final answer. Soil: sample in a zig-zag pattern, take 15–20 cores from 0–20 cm for arable land, mix in a clean bucket, quarter down to about 500 g and label with field, date and depth.
311 words, about 2 min