Soil Organic Matter MCQs Quiz 14

1. Sustainable soil management requires ________________

2. An organic amendment rich in humified organic matter, microbial biomass, and plant-available nutrients, produced via epigeic earthworm-mediated bioconversion of organic residues, is termed ________________

3. In soil nutrient cycling, immobilization refers to the conversion of _________

4. ______________________ predominantly governs the decomposition of farmyard manure (FYM) under well-aerated soil conditions

5. Soil clay minerals influence enzyme activity mainly by ___________________

6. Which factor most strongly influences the transformation of organic residues into stable humus?

7. Protease enzymes contribute directly to _______________

8. The carbon-to-nitrogen (C:N) ratio in soil is a key regulator of  _____________

9. High soil temperature generally affects enzyme activity by __________

10. In soils with high C:N ratio residues, enzyme activity often leads to ___________