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