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Agriculture Sciences - ICAR AIEEA (Agronomy & Soil Science) previous year questions (PYQ)

1,451 previous year Agriculture Sciences - ICAR AIEEA (Agronomy & Soil Science) questions, grouped by year, with answers and solutions.

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2026 (564 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Vertisols
(B)
Entisols
(C)
Inceptisols
(D)
Aridisols
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Vertisols
(B)
Entisols
(C)
Inceptisols
(D)
Aridisols
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2025 (71 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Vertisols
(B)
Inceptisols
(C)
Aridisols
(D)
Entisols
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which symbiotic nitrogen-fixing bacterium forms root nodules specifically on leguminous crops (e.g. Soybeans, Chickpeas, Groundnuts)?

(A)
Bacillus thuringiensis
(B)
Azospirillum brasilense
(C)
Rhizobium spp.
(D)
Azotobacter chroococcum
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2024 (183 questions)

Q1.

Weed Science: In agro-ecosystem weed management in 'Water Management: Water Requirement of Crops, Drip/Sprinkler Irrigation', what does the Critical Period of Weed Competition (CPWC) denote?

(A)

The specific window during crop growth when weeds must be controlled to prevent unacceptable economic yield loss (typically first 30–45 days) (Water Management: Water Requirement of Crops, Drip/Sprinkler Irrigation)

(B)

The period when weed seeds germinate in winter

(C)

The time required for an herbicide to degrade in soil

(D)

The harvest period when weeds die naturally

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Q2.

Financial Valuation & Risk Governance: In quantitative risk assessment of 'Agronomy: Classification of Field Crops, Cropping Systems and Crop Rotations', which metric reliably gauges liquidity coverage and credit solvency?

(A)

Interest coverage ratio and net debt-to-EBITDA within prudential regulatory thresholds (Agronomy: Classification of Field Crops, Cropping Systems and Crop Rotations)

(B)

Gross uncollateralized receivables divided by overdue accounts payable

(C)

Speculative inventory holding periods ignoring market depreciation

(D)

Nominal face value of authorized share capital without considering equity

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2023 (74 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Entisols
(B)
Inceptisols
(C)
Vertisols
(D)
Aridisols
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which essential plant macronutrient plays a pivotal physiological role in stomatal regulation, cell turgor maintenance, and activating carbohydrate metabolism enzymes?

(A)
Phosphorus (P)
(B)
Magnesium (Mg)
(C)
Potassium (K)
(D)
Calcium (Ca)
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2022 (71 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which essential plant macronutrient plays a pivotal physiological role in stomatal regulation, cell turgor maintenance, and activating carbohydrate metabolism enzymes?

(A)
Potassium (K)
(B)
Magnesium (Mg)
(C)
Calcium (Ca)
(D)
Phosphorus (P)
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which essential plant macronutrient plays a pivotal physiological role in stomatal regulation, cell turgor maintenance, and activating carbohydrate metabolism enzymes?

(A)
Calcium (Ca)
(B)
Potassium (K)
(C)
Phosphorus (P)
(D)
Magnesium (Mg)
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2021 (63 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which essential plant macronutrient plays a pivotal physiological role in stomatal regulation, cell turgor maintenance, and activating carbohydrate metabolism enzymes?

(A)
Calcium (Ca)
(B)
Potassium (K)
(C)
Phosphorus (P)
(D)
Magnesium (Mg)
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which symbiotic nitrogen-fixing bacterium forms root nodules specifically on leguminous crops (e.g. Soybeans, Chickpeas, Groundnuts)?

(A)
Rhizobium spp.
(B)
Bacillus thuringiensis
(C)
Azospirillum brasilense
(D)
Azotobacter chroococcum
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2020 (67 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Vertisols
(B)
Aridisols
(C)
Inceptisols
(D)
Entisols
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): In integrated pest management (IPM), what is the definition of 'Economic Threshold Level' (ETL)?

(A)
The pest density at which control measures should be initiated to prevent the population from reaching the Economic Injury Level (EIL)
(B)
The lowest population density that will cause measurable economic crop loss
(C)
The market price of chemical insecticides balanced against grain yield
(D)
The stage at which 100% of all insect pests are completely exterminated
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2019 (68 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which essential plant macronutrient plays a pivotal physiological role in stomatal regulation, cell turgor maintenance, and activating carbohydrate metabolism enzymes?

(A)
Potassium (K)
(B)
Magnesium (Mg)
(C)
Calcium (Ca)
(D)
Phosphorus (P)
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which symbiotic nitrogen-fixing bacterium forms root nodules specifically on leguminous crops (e.g. Soybeans, Chickpeas, Groundnuts)?

(A)
Azospirillum brasilense
(B)
Rhizobium spp.
(C)
Bacillus thuringiensis
(D)
Azotobacter chroococcum
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2018 (71 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which symbiotic nitrogen-fixing bacterium forms root nodules specifically on leguminous crops (e.g. Soybeans, Chickpeas, Groundnuts)?

(A)
Azospirillum brasilense
(B)
Bacillus thuringiensis
(C)
Rhizobium spp.
(D)
Azotobacter chroococcum
Show answer & solution
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): In integrated pest management (IPM), what is the definition of 'Economic Threshold Level' (ETL)?

(A)
The pest density at which control measures should be initiated to prevent the population from reaching the Economic Injury Level (EIL)
(B)
The stage at which 100% of all insect pests are completely exterminated
(C)
The lowest population density that will cause measurable economic crop loss
(D)
The market price of chemical insecticides balanced against grain yield
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2017 (72 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Inceptisols
(B)
Vertisols
(C)
Entisols
(D)
Aridisols
Show answer & solution
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Inceptisols
(B)
Aridisols
(C)
Vertisols
(D)
Entisols
Show answer & solution
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2016 (56 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Which essential plant macronutrient plays a pivotal physiological role in stomatal regulation, cell turgor maintenance, and activating carbohydrate metabolism enzymes?

(A)
Potassium (K)
(B)
Phosphorus (P)
(C)
Magnesium (Mg)
(D)
Calcium (Ca)
Show answer & solution
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Aridisols
(B)
Inceptisols
(C)
Entisols
(D)
Vertisols
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2015 (91 questions)

Q1.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): Black cotton soils (Regur soils) in the Deccan Plateau are classified under which USDA soil taxonomy order characterized by high swelling and shrinking clay content?

(A)
Entisols
(B)
Vertisols
(C)
Inceptisols
(D)
Aridisols
Show answer & solution
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Q2.
In ICAR AIEEA Agricultural Sciences (Agronomy, Crop Ecology & Soil Chemistry): In integrated pest management (IPM), what is the definition of 'Economic Threshold Level' (ETL)?

(A)
The lowest population density that will cause measurable economic crop loss
(B)
The stage at which 100% of all insect pests are completely exterminated
(C)
The market price of chemical insecticides balanced against grain yield
(D)
The pest density at which control measures should be initiated to prevent the population from reaching the Economic Injury Level (EIL)
Show answer & solution
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