Agriculture and Allied Sciences
What is tested
The paper assesses agronomy, soil science, horticulture, plant protection, animal husbandry, fisheries and agricultural economics, with a strong Andhra Pradesh crop and scheme focus.
Core agronomy
- Cropping seasons: kharif (June-October, monsoon), rabi (October-March, irrigation), zaid (summer).
- Soils: AP has black cotton soils (cotton, chilli), red loams (groundnut, millets), alluvial deltas (rice, sugarcane), laterites and coastal saline soils.
- Seed rate, spacing, plant population and fertilizer doses are calculation-friendly topics. Urea = 46% N; DAP = 18% N and 46% P2O5; MOP = 60% K2O.
- Integrated nutrient and pest management, soil health cards, crop rotation and water-saving irrigation (drip, sprinkler).
- AP leads in chilli, turmeric, oil palm and aquaculture; horticulture crops include mango, banana, sweet orange and papaya.
Allied sectors
Animal husbandry (crossbred cattle, buffalo, sheep, poultry), fisheries (coastal aquaculture, shrimp), sericulture and dairy. Rythu Bharosa Kendras at village level provide seed, fertilizer, soil testing and advisory services.
Worked example
A farmer must apply 120 kg N/ha. How much urea is needed? Reasoning: Urea contains 46% N, so urea required = 120 ÷ 0.46 = 260.9 kg/ha. If half is basal, apply about 130 kg urea at sowing and the rest as top dressing. Convert hectares to acres (1 ha = 2.47 acres) before using acre-based recommendations.
Traps
- Confusing gross cropped area with net sown area.
- Mixing seed rate (kg/ha) with plant population.
- Applying all nitrogen as basal - split application is standard.
- Forgetting that P and K are expressed as P2O5 and K2O, not elemental.