Sustainable Farming Quiz | Agriculture MCQ Practice for IBPS AFO 2026

1

Which of the following practices contributes most to reducing nitrous oxide (N2O) emissions from agricultural soils?

Applying excessive irrigation water

Using nitrification inhibitors with nitrogen fertilizers

Plowing the soil deeply before planting

Applying anhydrous ammonia without proper soil incorporation

Broadcasting urea fertilizer

Solution & Explanation Nitrification inhibitors slow down the conversion of ammonium to nitrate in the soil, reducing the amount of nitrate available for denitrification, a process that produces N2O. This is a key strategy for mitigating N2O emissions, a potent greenhouse gas.

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2

What is the primary role of biochar in climate-smart agricultural practices?

Inhibiting beneficial microbial activity

Decreasing soil pH

Enhancing soil carbon sequestration and fertility

Promoting rapid nitrogen volatilization

Increasing susceptibility to plant diseases

Solution & Explanation Biochar, produced through pyrolysis of biomass, enhances soil carbon sequestration by providing a stable carbon form. It also improves soil fertility by increasing water retention, nutrient availability, and cation exchange capacity (CEC), supporting plant growth.

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3

Which of the following is a key characteristic of climate-resilient livestock breeds?

Tolerance to heat and drought conditions

High susceptibility to heat stress

Increased vulnerability to diseases

Low feed conversion efficiency

High water requirements

Solution & Explanation Climate-resilient livestock breeds are adapted to tolerate heat and drought conditions, making them more suitable for regions prone to climate extremes. These breeds often possess physiological and behavioral traits that enable them to survive and reproduce under harsh environmental conditions.

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4

Which remote sensing technology is most effective for monitoring crop water stress and irrigation needs in large agricultural areas?

Visible light photography

Manual field observations

Ground-based soil moisture sensors

Acoustic sensors

Thermal infrared (TIR) imagery

Solution & Explanation Thermal infrared (TIR) imagery measures the temperature of plant canopies. Stressed plants transpire less, leading to higher canopy temperatures. This allows for the identification of water-stressed areas and optimization of irrigation scheduling over large areas.

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5

What is the role of agroforestry in climate-smart agriculture?

Sequestering carbon, improving soil health, and providing diversified income

Reducing biodiversity and wildlife habitat

Decreasing water infiltration and increasing runoff

Increasing soil erosion and land degradation

Promoting monoculture cropping systems

Solution & Explanation Agroforestry systems sequester carbon in both trees and soil, improve soil health through nutrient cycling and organic matter addition, and provide diversified income sources through timber, fruits, and other products. This contributes to climate change mitigation and adaptation while enhancing livelihood security.

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Sustainable Farming Quiz for IBPS AFO 2026

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