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

🔥 PLATINUM SERIES 2.0 | VOL. 203

📅 18 OCTOBER 2026 | SUNDAY

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

📝 20 MCQs | 20 MARKS | 15 MINUTES

⚠️ NEGATIVE MARKING: −0.25 PER INCORRECT ANSWER

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🔥 THE AGRICULTURE INTELLIGENCE CHALLENGE

Test your understanding of crop physiology, soil fertility, irrigation engineering, weed science, agricultural finance, farm management and post-harvest technology.

📌 Select the single best answer.

📌 Attempt all 20 questions before checking the key.

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

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🌱 SECTION 1: PLATINUM AGRICULTURE MOCK

Q1. Which physiological feature enables C4 crops such as maize and sorghum to reduce photorespiration and perform efficiently under high-temperature conditions:

A. Absence of chlorophyll in mesophyll cells

B. Exclusive dependence on CAM metabolism

C. Initial carbon fixation through phosphoenolpyruvate carboxylase

D. Complete absence of stomata

E. Inability to fix atmospheric carbon dioxide

Q2. Urea contains approximately 46% nitrogen. How much nitrogen is supplied by applying 130 kg of urea per hectare:

A. 46 kg

B. 50 kg

C. 55 kg

D. 59.8 kg

E. 65 kg

Q3. A farmer cultivates crops on strongly acidic soil. Which amendment is commonly used to neutralise soil acidity and raise soil pH:

A. Agricultural lime

B. Gypsum alone

C. Elemental sulphur

D. Sodium chloride

E. Ammonium sulphate

Q4. Which nutrient deficiency is commonly associated with purplish coloration in older leaves of certain crops due to restricted phosphorus availability:

A. Calcium

B. Iron

C. Boron

D. Sulphur

E. Phosphorus

Q5. Which irrigation method generally offers high water-use efficiency by delivering water directly to the crop root zone through emitters:

A. Uncontrolled flooding

B. Drip irrigation

C. Continuous field inundation

D. Broad irrigation without field levelling

E. Unregulated canal overflow

Q6. Which practice is characteristic of the System of Rice Intensification (SRI), subject to local adaptation:

A. Maintaining deep standing water throughout the entire crop season

B. Transplanting only old seedlings at very high density

C. Using younger seedlings, wider spacing and carefully managed irrigation

D. Eliminating all soil aeration

E. Keeping every field permanently waterlogged

Q7. Which herbicide is commonly used for selective control of broad-leaved weeds in wheat, when applied according to the approved label and crop stage:

A. Butachlor

B. Pendimethalin

C. Glyphosate applied indiscriminately over standing wheat

D. 2,4-D

E. Paraquat applied indiscriminately over standing wheat

Q8. Which microorganism forms a symbiotic association with leguminous plants and fixes atmospheric nitrogen in root nodules:

A. Rhizobium

B. Azotobacter exclusively in root nodules

C. Nitrosomonas

D. Pseudomonas syringae

E. Xanthomonas oryzae

Q9. The principal agronomic benefit of a well-planned crop rotation involving crops from different botanical families is:

A. Guaranteed elimination of every crop disease

B. Permanent prevention of all weed emergence

C. Elimination of the need for fertilisers in every soil

D. Guaranteed identical yields every year

E. Improved resource use and possible disruption of crop-specific pest and disease cycles

Q10. A field requires a net irrigation depth of 6 cm. If the field application efficiency is 75%, what gross irrigation depth should be applied, ignoring other conveyance losses:

A. 4.5 cm

B. 8 cm

C. 6 cm

D. 7 cm

E. 10 cm

Q11. Which statement best describes reference evapotranspiration (ET₀) in irrigation planning:

A. It measures only deep percolation from a field

B. It is the actual yield loss caused by weeds

C. It represents atmospheric evaporative demand estimated for a reference surface

D. It measures only rainfall infiltration

E. It is identical to the soil's permanent wilting point

Q12. A viable seed fails to germinate even under apparently favourable environmental conditions because of an internal physiological or physical restriction. This condition is known as:

A. Seed vigour

B. Seed purity

C. Seed certification

D. Seed dormancy

E. Seed grading

Q13. The central principle of Integrated Pest Management (IPM) is to:

A. Combine compatible management methods and use monitoring and economic thresholds where applicable

B. Apply the same pesticide at fixed intervals regardless of pest incidence

C. Eliminate all natural enemies from the field

D. Depend exclusively on chemical pesticides

E. Spray pesticides before crop establishment in every situation

Q14. Under crop insurance, the main purpose of insuring eligible notified crops against specified agricultural risks is to:

A. Guarantee a fixed profit to every farmer

B. Eliminate all agricultural production risks

C. Guarantee procurement at the Minimum Support Price

D. Replace every form of institutional agricultural credit

E. Provide financial protection against covered crop losses, subject to policy terms

Q15. Which platform was developed to facilitate electronic trading and improve market access for agricultural commodities through an integrated online market:

A. CERSAI

B. e-NAM

C. CKYCR

D. NDS-OM

E. DICGC

Q16. Which institution plays a major role in rural credit planning, refinance support and development initiatives for agriculture and rural development in India:

A. SEBI

B. IRDAI

C. NABARD

D. DICGC

E. PFRDA

Q17. Under the Self-Help Group–Bank Linkage approach, the principal objective is to:

A. Replace every commercial bank with a village committee

B. Provide unconditional grants without any financial discipline

C. Restrict group membership exclusively to large landowners

D. Link eligible self-help groups with formal financial services, including savings and credit

E. Guarantee that every group loan is interest-free

Q18. Why is reducing grain moisture to a safe level before storage important:

A. It increases the grain's original genetic purity

B. It eliminates every possible storage pest permanently

C. It guarantees a higher market price in every season

D. It increases grain moisture indefinitely

E. It helps reduce mould growth and deterioration when combined with suitable storage conditions

Q19. Which amendment is commonly used to reclaim sodic soils by supplying soluble calcium that helps replace exchangeable sodium, subject to soil testing and appropriate management:

A. Gypsum

B. Common salt

C. Sodium carbonate

D. Elemental sulphur in every soil irrespective of conditions

E. Urea alone

Q20. Why should a newborn calf receive adequate colostrum promptly after birth:

A. It permanently replaces the need for balanced feeding

B. It supplies maternal antibodies that provide passive immunity

C. It prevents every infectious disease throughout life

D. It eliminates the need for veterinary care

E. It replaces water for the entire rearing period

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🗝️ SECTION 2: ANSWER KEY

Q1. C

Q2. D

Q3. A

Q4. E

Q5. B

Q6. C

Q7. D

Q8. A

Q9. E

Q10. B

Q11. C

Q12. D

Q13. A

Q14. E

Q15. B

Q16. C

Q17. D

Q18. E

Q19. A

Q20. B

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📖 SECTION 3: QUICK EXPLANATIONS

Q1. C — C4 carbon fixation

C4 plants initially fix carbon dioxide through phosphoenolpyruvate carboxylase, concentrating carbon around Rubisco and reducing photorespiration.

Q2. D — 59.8 kg nitrogen

Nitrogen supplied = 130 × 0.46 = 59.8 kg/ha.

Q3. A — Agricultural lime

Liming materials neutralise soil acidity. The application rate depends on soil pH, buffering capacity and lime quality.

Q4. E — Phosphorus

Phosphorus is mobile within plants. Deficiency may cause purpling, particularly in older leaves, depending on crop and environmental conditions.

Q5. B — Drip irrigation

Drip irrigation applies water close to the root zone and can reduce evaporation and unnecessary water application.

Q6. C — SRI practices

SRI commonly involves younger seedlings, wider spacing, careful water management and practices intended to support healthy root and plant development.

Q7. D — 2,4-D

2,4-D is used to control susceptible broad-leaved weeds in certain cereal crops. Crop stage, formulation and label directions are critical.

Q8. A — Rhizobium

Rhizobium forms nodules on suitable legume roots and fixes atmospheric nitrogen through symbiosis.

Q9. E — Crop rotation

Crop rotation can improve resource use and interrupt some crop-specific pest and disease cycles. Benefits depend on the crops and local conditions.

Q10. B — 8 cm

Gross irrigation depth = Net depth ÷ Application efficiency

= 6 ÷ 0.75 = 8 cm.

Q11. C — Atmospheric evaporative demand

ET₀ estimates evapotranspiration from a standard reference surface. Crop evapotranspiration is commonly estimated using ET₀ and an appropriate crop coefficient.

Q12. D — Seed dormancy

Dormancy prevents germination under conditions that may otherwise be favourable. Different dormancy mechanisms require different treatments.

Q13. A — Integrated management

IPM combines monitoring, cultural, biological, mechanical and, where necessary, chemical controls. Economic thresholds help guide intervention.

Q14. E — Protection against covered losses

Crop insurance can reduce financial exposure to specified insured risks. Coverage, exclusions, claims and eligibility depend on the applicable policy.

Q15. B — e-NAM

The National Agriculture Market is an electronic trading platform intended to improve market access and facilitate agricultural commodity trading.

Q16. C — NABARD

NABARD supports agricultural and rural development through refinance, development programmes, institutional support and rural credit-related functions.

Q17. D — Formal financial inclusion

SHG–Bank Linkage connects eligible self-help groups with formal savings and credit services and supports financial inclusion.

Q18. E — Reduced storage deterioration

Appropriate grain moisture and suitable storage conditions help reduce mould growth, deterioration and storage losses.

Q19. A — Gypsum

Gypsum supplies calcium that can replace exchangeable sodium in sodic soils. Reclamation also requires suitable drainage and management based on soil assessment.

Q20. B — Passive immunity

Colostrum contains maternal antibodies and other important nutrients. Prompt intake is essential because the calf's ability to absorb antibodies declines rapidly after birth.

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⚠️ SECTION 4: AFO MAINS EXAM TRAPS

🔹 C4 crops reduce photorespiration; they do not eliminate all forms of environmental stress.

🔹 Urea contains approximately 46% nitrogen; calculate nutrient quantity using the application rate.

🔹 Lime is commonly used for acidic soils; gypsum is commonly used in sodic-soil reclamation.

🔹 Drip irrigation improves water delivery efficiency but does not eliminate the need for proper scheduling.

🔹 Crop rotation can disrupt pest cycles, but it does not guarantee disease elimination.

🔹 Gross irrigation depth is greater than net depth when application efficiency is below 100%.

🔹 Seed dormancy is different from loss of seed viability.

🔹 IPM integrates methods rather than relying exclusively on pesticides.

🔹 Crop insurance covers specified risks under policy conditions; it does not guarantee profit.

🔹 e-NAM supports agricultural marketing; NABARD supports rural credit and development.

🔹 Lower grain moisture helps storage only when appropriate moisture limits and storage conditions are maintained.

🔹 Colostrum provides passive immunity; it does not replace vaccination and veterinary care.

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🧠 SECTION 5: 60-SECOND RECALL

🌽 Crop physiology → C4 carbon fixation

🧪 Fertiliser calculation → Urea contains approximately 46% nitrogen

🌱 Soil fertility → Lime for acidic soils; gypsum for sodic soils

💧 Irrigation → Net depth ÷ application efficiency

🌿 Weed science → Selective herbicide use

🦠 Biofertilisers → Rhizobium and nitrogen fixation

🔄 Agronomy → Crop rotation

🌾 Seed science → Dormancy versus viability

🐛 IPM → Monitoring and integrated control

📊 Agricultural marketing → e-NAM

🏦 Rural finance → NABARD and SHG–Bank Linkage

📦 Storage → Grain moisture management

🐄 Animal husbandry → Colostrum and passive immunity

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🏆 SECTION 6: SELF-ASSESSMENT

Correct answers: ____

Incorrect answers: ____

Unattempted: ____

Score = Correct answers − (0.25 × incorrect answers)

🔥 18–20: Excellent

🟢 16–17.75: Strong performance

🟡 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 — Complete all 20 questions in 15 minutes.

📌 CALCULATE — Recheck the urea and irrigation calculations.

📌 ANALYSE — Identify weak agricultural subjects.

📌 REVISE — Focus on the concepts behind incorrect answers.

📌 SHARE — Comment with your score out of 20.

📌 PRACTISE — Continue with IBR Agriculture Intelligence Mocks.

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 Disclaimer: This is independently prepared educational practice material and is not an official IBPS question paper. Agricultural recommendations, crop-protection products and government scheme provisions should be checked against current official notifications, approved product labels and locally applicable guidance.