Soil Organic Matter MCQs Quiz 15

1. ______________ is a group of microrganisms, primarily used for nitrogen fixation in non-leguminous crops such as wheat and maize

2. Which soil condition typically favors maximum activity of most hydrolytic enzymes?

3. __________________ is the stable, long-lived fraction of soil organic carbon that is most resistant to microbial decomposition

4. How does soil disturbance (e.g., tillage) typically affect soil organic matter (SOM)?

5. Soil enzyme activities are most strongly correlated with _________

6. How does an increase in soil organic matter (SOM) primarily lead to a decrease in soil bulk density?

7. Increase nutrient retention in soils due to soil organic matter (SOM) occurs primarily through ______________

8. Soil enzyme _____________ is directly involved in the hydrolysis of urea to ammonia and carbon dioxide

9. Which agricultural practice is most effective for increasing soil carbon sequestration?

10. Sustainable soil management is best achieved by ___________