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