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