MCQs Agronomy-51 Posted on May 6, 2025August 30, 2025Author agropublishers 0 1. Humus is a decomposed form of_________ Soil microorganisms Soil minerals Plant litter and animal residues Synthetic fertilizers 2. “TIRAK” or more commonly referred to as “boll shedding” or reduced boll retention in cotton, can be caused by___________ All of these stresses Water Stress High Temperature Stress Salt Stress 3. _________ is the mass of unit volume of dry soil Bulk density Soil porosity Soil moisture deficit Particle density 4. Which one is not a standard method for the eradication of waterlogging in agricultural soils Use of press mud Surface Drainage Planting tree Lining of canals 5. _________ is most commonly used in agricultural lands to raise soil pH and correct acidity MgO Sodium Hydroxide Organic matter Lime 6. Which of the following best describes biodegradation? All of these Complete transformation of the organic molecule to mineral forms Fragmentation of a complex organic molecule Breakdown of organic molecules 7. _____________ is not a cause of waterlogging Crop sowing time Extreme rainfall event Overflooding agricultural lands Poor canal drainage system 8. Dark coloured soils are considered most fertile as they often contain ________ Clay and humus Silt and soil biota Sand and minerals Gravel and Sand 9. A region where total rainfall is less than the natural evapotranspiration rate is called __________ Humid region Arid region Irrigated region Polar region 10. _________ is a crop grown on residual moisture after the harvest of a rice crop Relay crop Ratoon crop Residual crop Dobari crop Loading … Question 1 of 10
