MCQs Soil Science-59 Posted on November 30, 2025November 30, 2025Author agropublishers 0 MCQs Soil Science-59 1. Which of the following is NOT included in the soil organic matter (SOM) Microbial biomass Plant residues Humus Soil minerals 2. Nutrient imbalance results in ———- Nutrient Toxicity All of these Nutrient Deficiencies Poor Plant growth 3. Good soil fertility significantly reduces the need for ——- Insecticides Herbicides Excess fertilizers Excess irrigation 4. Potassium is essential for drought tolerance in plants True False 5. Soil organic matter contributes to the dark color of topsoil False True 6. Humification is the process of ——— Acidification of soil Mineralization of nitrogen Clay synthesis Formation of humus 7. A soil’s inherent nutrient content mainly determines—- Fertility Drainage Productivity All of these 8. Lignin-rich materials decompose slowly in the soil True False 9. Soil compaction increases soil productivity False True 10. Soil enzyme activity is highest in —— Organic matter-rich soils Sandy soils Clayey soils Saline soils Loading … Question 1 of 10
