INDIAN BANKING RADAR (IBR) - IBPS AFO MAINS — AGRICULTURE INTELLIGENCE MOCK

🔥 PLATINUM SERIES 2.0 | VOL. 209

📅 SATURDAY, 24 OCTOBER 2026

🎯 TARGET: IBPS AFO • Agriculture Officers • NABARD • RRB

📝 20 MCQs | 20 MARKS | 15 MINUTES

⚠️ NEGATIVE MARKING: −0.25 PER INCORRECT ANSWER

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🔥 SECTION 1 — THE AGRICULTURE INTELLIGENCE CHALLENGE

Today's mock emphasises applied agricultural science, numerical accuracy, farm decision-making and technical concepts relevant to Agriculture Field Officer examinations.

Coverage: Seed technology • Fertiliser calculations • Irrigation engineering • Fodder conservation • Biological control • Animal husbandry • Fisheries • Agricultural finance • Crop physiology • Post-harvest management • Farm economics • Integrated pest management.

📌 Select the single best answer.

📌 Correct: +1 | Incorrect: −0.25 | Unattempted: 0

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Q1. The recommended seed rate of a crop is 100 kg/ha when seed purity and germination are both 100%. If the available seed has 90% physical purity and 80% germination, what quantity of seed is required per hectare to achieve the equivalent viable pure-seed rate:

A. 125.0 kg/ha

B. 120.0 kg/ha

C. 138.9 kg/ha

D. 130.4 kg/ha

E. 145.0 kg/ha

Q2. A farmer must apply 60 kg of nitrogen per hectare using urea containing 46% nitrogen. Approximately how much urea is required per hectare:

A. 130.4 kg

B. 120.0 kg

C. 138.0 kg

D. 150.0 kg

E. 100.0 kg

Q3. Irrigation water is applied at a depth of 6 cm over a 2-hectare field. Assuming uniform application, what volume of water is applied:

A. 600 m³

B. 900 m³

C. 1,500 m³

D. 2,000 m³

E. 1,200 m³

Q4. A crop produces 4,800 kg of grain per hectare while consuming 600 mm of water through evapotranspiration. What is its grain water productivity:

A. 6 kg/ha-mm

B. 8 kg/ha-mm

C. 10 kg/ha-mm

D. 12 kg/ha-mm

E. 4 kg/ha-mm

Q5. What is the principal preservation mechanism in properly prepared silage under anaerobic conditions:

A. Complete conversion of all fibre into soluble sugars

B. Elimination of the need for proper compaction

C. Sterilisation of the forage against every microorganism

D. Production of organic acids through fermentation, helping suppress spoilage organisms

E. Continuous exposure to atmospheric oxygen

Q6. Trichoderma species are used in agriculture primarily as:

A. Synthetic herbicides that control all weeds

B. Biological control agents against certain soil-borne plant pathogens

C. Nitrogen fertilisers supplying all crop nitrogen requirements

D. Insecticides effective against every insect pest

E. Chemicals used exclusively to induce flowering

Q7. A dairy cow develops muscle tremors, weakness and difficulty standing shortly after calving. Which metabolic disorder should be strongly suspected:

A. Ketosis caused by excessive blood glucose

B. Milk fever caused by high blood calcium

C. Bloat caused exclusively by calcium deficiency

D. Milk fever associated with hypocalcaemia

E. Rabies caused by a nutritional deficiency

Q8. Fish in a culture pond gasp at the water surface during early morning, and dissolved oxygen is measured at 2 mg/L. What is the most appropriate immediate management response:

A. Start prompt aeration, reduce or suspend feeding temporarily, and assess water quality

B. Apply additional organic manure to increase decomposition

C. Increase feeding to improve fish growth

D. Increase stocking density to utilise the available oxygen

E. Discontinue water-quality monitoring

Q9. What is a major benefit of financing against an eligible negotiable warehouse receipt for agricultural commodities:

A. The farmer is guaranteed a fixed market price

B. The stored commodity becomes exempt from quality standards

C. The farmer may obtain credit against stored produce without selling it immediately

D. The warehouse assumes all commodity-price risk

E. The commodity automatically becomes government property

Q10. Two crop varieties have the same mean yield, but Variety X has a lower coefficient of variation than Variety Y. Assuming comparable data and measurement conditions, Variety X demonstrates:

A. A higher mean yield by definition

B. Zero yield variability

C. Guaranteed immunity to drought

D. A greater response to every fertiliser

E. Lower relative variability in yield

Q11. In livestock breeding, grading up generally involves:

A. Random mating without selection

B. Selecting animals exclusively by coat colour

C. Preventing breeding for several generations

D. Repeatedly mating non-descript or lower-grade females with superior purebred sires of the desired breed

E. Improving livestock solely through mineral supplementation

Q12. Which plant hormone is most closely associated with apical dominance, whereby the growing shoot tip suppresses the growth of lateral buds:

A. Ethylene

B. Abscisic acid

C. Auxin

D. Gibberellin

E. Cytokinin

Q13. Brown heart and related internal tissue abnormalities in cauliflower are commonly associated with a deficiency of:

A. Zinc

B. Boron

C. Iron

D. Molybdenum

E. Copper

Q14. Reference evapotranspiration (ETo) is estimated at 5 mm/day and the crop coefficient (Kc) is 1.2. Ignoring effective rainfall and other adjustments, what is the estimated crop evapotranspiration (ETc):

A. 4.2 mm/day

B. 5.0 mm/day

C. 7.2 mm/day

D. 8.0 mm/day

E. 6.0 mm/day

Q15. Which situation can cause chilling injury in susceptible tropical fruits during post-harvest storage:

A. Exposure to temperatures below the fruit's crop-specific chilling threshold but above freezing

B. Maintaining the recommended storage temperature

C. Removing damaged produce before storage

D. Maintaining suitable relative humidity

E. Using clean handling equipment

Q16. A farm incurs fixed production costs of ₹60,000. The selling price is ₹20/kg and variable cost is ₹12/kg. Assuming these figures remain constant, what is the break-even output:

A. 5,000 kg

B. 6,000 kg

C. 8,500 kg

D. 10,000 kg

E. 7,500 kg

Q17. Which statement correctly describes orthodox seeds in seed-storage technology:

A. They cannot tolerate drying under any circumstances

B. They generally tolerate drying to low moisture content and storage at low temperatures

C. They must always be stored in humid conditions

D. They remain viable only when continuously submerged in water

E. They cannot be stored in seed banks

Q18. Which management practice is most appropriate for reducing heat stress in commercial poultry during hot weather:

A. Restricting drinking-water availability

B. Increasing stocking density

C. Reducing ventilation to retain heat

D. Improving ventilation, providing cool clean water and managing feeding during cooler hours

E. Increasing heat-producing equipment use

Q19. In integrated pest management, the economic threshold level (ETL) is the pest population level at which:

A. Control action should be initiated to prevent the population from reaching the economic injury level

B. Every insect in the field must be eliminated

C. Crop damage is always zero

D. Pesticide application becomes unnecessary under all conditions

E. Harvest must immediately begin

Q20. A drip-irrigation system has 2,500 emitters per hectare, each discharging 4 litres/hour. If all emitters operate for two hours at their rated discharge, what total volume of water is applied per hectare:

A. 10 m³/ha

B. 15 m³/ha

C. 20 m³/ha

D. 25 m³/ha

E. 40 m³/ha

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🗝️ SECTION 2 — ANSWER KEY

Q1. C

Q2. A

Q3. E

Q4. B

Q5. D

Q6. B

Q7. D

Q8. A

Q9. C

Q10. E

Q11. D

Q12. C

Q13. B

Q14. E

Q15. A

Q16. E

Q17. B

Q18. D

Q19. A

Q20. C

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📖 SECTION 3 — QUICK EXPLANATIONS

Q1. C — 138.9 kg/ha

Viable pure-seed fraction = 0.90 × 0.80 = 0.72.

Required seed rate = 100 ÷ 0.72 = 138.9 kg/ha approximately.

Q2. A — 130.4 kg

Urea requirement = required nitrogen ÷ nitrogen fraction in urea.

= 60 ÷ 0.46 = 130.4 kg/ha approximately.

Q3. E — 1,200 m³

Two hectares = 20,000 m². Water depth = 6 cm = 0.06 m.

Volume = 20,000 × 0.06 = 1,200 m³.

Q4. B — 8 kg/ha-mm

Water productivity = grain yield ÷ evapotranspiration.

= 4,800 ÷ 600 = 8 kg/ha-mm.

Q5. D — Organic-acid production

Under anaerobic conditions, lactic acid bacteria and other desirable microorganisms ferment plant sugars, lowering pH and helping preserve forage. Good silage also requires appropriate moisture, compaction and sealing.

Q6. B — Biological control

Certain Trichoderma strains suppress soil-borne pathogens through mechanisms including competition, antibiosis and mycoparasitism. Effectiveness depends on the strain, pathogen and field conditions.

Q7. D — Hypocalcaemia

Milk fever, also called parturient hypocalcaemia, is associated with low blood calcium around calving. Severe cases require prompt veterinary attention.

Q8. A — Aeration and water-quality management

Dissolved oxygen of 2 mg/L is dangerously low for many cultured fish. Prompt aeration and temporary feeding reduction can help while oxygen levels and other water-quality parameters are assessed.

Q9. C — Post-harvest credit

An eligible warehouse receipt can support borrowing against stored produce. This may help a farmer postpone sale, although loan approval, valuation and terms remain subject to lender requirements.

Q10. E — Lower relative variability

Coefficient of variation (CV) = standard deviation ÷ mean × 100.

When means are equal, a lower CV indicates lower relative variability in yield; it does not guarantee higher yield or drought resistance.

Q11. D — Grading up

Repeated mating of females with superior purebred sires of the desired breed can progressively increase the proportion of that breed's ancestry, subject to sound breeding and selection practices.

Q12. C — Auxin

Auxin produced in the shoot apex contributes to apical dominance. Cytokinins generally promote lateral bud growth and can counter aspects of apical dominance.

Q13. B — Boron

Boron deficiency is associated with brown heart and other internal tissue disorders in cauliflower. Diagnosis should consider symptoms, soil conditions and tissue analysis.

Q14. E — 6.0 mm/day

ETc = ETo × Kc.

= 5 × 1.2 = 6 mm/day.

Q15. A — Chilling injury

Susceptible tropical produce can suffer physiological injury at temperatures above freezing but below its crop-specific chilling threshold. The appropriate storage temperature depends on the commodity and maturity.

Q16. E — 7,500 kg

Contribution per kg = ₹20 − ₹12 = ₹8.

Break-even output = fixed cost ÷ contribution per kg.

= ₹60,000 ÷ ₹8 = 7,500 kg.

Q17. B — Desiccation tolerance

Orthodox seeds generally tolerate drying to low moisture content and storage at low temperatures. Recalcitrant seeds are sensitive to desiccation and require different storage conditions.

Q18. D — Heat-stress management

Ventilation, access to cool clean drinking water and feeding during cooler hours help reduce heat stress. Stocking density and housing design also affect the birds' heat load.

Q19. A — Initiate control before economic injury

The ETL is the pest population level at which management action should begin to prevent the population from reaching the economic injury level (EIL), where losses justify the cost of control.

Q20. C — 20 m³/ha

Hourly discharge = 2,500 × 4 = 10,000 litres/hour.

For two hours = 20,000 litres = 20 m³/ha.

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⚠️ SECTION 4 — HIGH-VALUE AFO EXAM TRAPS

🔹 Seed-rate adjustment: Account for both physical purity and germination.

🔹 Urea calculation: Divide the nitrogen requirement by 0.46.

🔹 Irrigation volume: Convert centimetres to metres before calculating volume.

🔹 Water productivity: Keep units consistent when dividing yield by water consumed.

🔹 Silage: Anaerobic fermentation and proper sealing are essential; pH alone does not establish silage quality.

🔹 Biological control: Trichoderma is not a synthetic fertiliser or universal pesticide.

🔹 Milk fever: Think hypocalcaemia around calving.

🔹 Fish pond oxygen: Early-morning oxygen depletion can be critical.

🔹 Warehouse receipts: They facilitate eligible post-harvest finance but do not guarantee a market price.

🔹 Coefficient of variation: Measures relative variability, not average yield.

🔹 Grading up: Repeated use of superior purebred sires of the desired breed.

🔹 Apical dominance: Auxin is a key regulator; cytokinin often promotes lateral bud growth.

🔹 Boron deficiency: Can cause brown heart in cauliflower.

🔹 Crop water requirement: ETc = ETo × Kc under the stated assumptions.

🔹 Chilling injury: Can occur above freezing in susceptible tropical produce.

🔹 Break-even output: Fixed costs ÷ contribution per unit.

🔹 Orthodox seeds: Generally tolerate drying and low-temperature storage.

🔹 Poultry heat stress: Ventilation and water availability are essential.

🔹 ETL versus EIL: ETL triggers action; EIL is the point at which economic losses justify control costs.

🔹 Drip irrigation: Water volume depends on emitter discharge, emitter count and operating duration.

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🧠 SECTION 5 — 60-SECOND RECALL

📌 Adjusted seed rate = target rate ÷ (purity fraction × germination fraction)

📌 Urea requirement = nitrogen requirement ÷ 0.46

📌 Irrigation volume = area × water depth

📌 Water productivity = yield ÷ water consumed

📌 Silage preservation = anaerobic fermentation and acidification

📌 Trichoderma = biological disease suppression

📌 Milk fever = hypocalcaemia

📌 Low pond oxygen = prompt aeration and water-quality assessment

📌 Warehouse receipt = potential collateral for post-harvest credit

📌 Lower CV = lower relative variability

📌 Grading up = repeated mating with superior purebred sires

📌 Apical dominance = auxin-associated response

📌 Cauliflower brown heart = possible boron deficiency

📌 ETc = ETo × Kc

📌 Chilling injury = crop-specific sensitivity to low temperatures

📌 Break-even output = fixed cost ÷ contribution per unit

📌 Orthodox seeds = generally desiccation-tolerant

📌 Poultry heat stress = ventilation, cool water and suitable management

📌 ETL = initiate control before the EIL is reached

📌 Drip-irrigation volume = discharge × emitter count × operating time

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🏆 SECTION 6 — SELF-ASSESSMENT

Correct answers: ____

Incorrect answers: ____

Unattempted: ____

SCORE = Correct answers − (0.25 × incorrect answers)

🔥 18–20: Excellent performance

🟢 16–17.75: Strong preparation

🟡 12–15.75: Revise weak areas

🔴 Below 12: Strengthen fundamentals

These are IBR practice benchmarks, not official IBPS cut-offs.

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🎯 SECTION 7 — YOUR ACTION ZONE

📌 Attempt all 20 questions within 15 minutes.

📌 Practise seed-rate, fertiliser-dose and irrigation-volume calculations.

📌 Revise the differences between ETL and EIL.

📌 Explain the role of anaerobic fermentation in silage preservation.

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📚 SECTION 8 — JOIN IBR PREMIUM

🔥 IBR EXAM-PREPARATION PROGRAMMES

• IBPS Prelims and PO Mains

• IBPS AFO — Agriculture and Rural Development

• DCCB / PACS Banking

• JAIIB and CAIIB

🎯 Exam-focused MCQs • Explanations • Regular practice

🎁 Mention the 90-day free-access offer only after confirming its validity.

📲 Premium Registration: [Insert official IBR Premium registration link]

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