Abstract:
The effect of different combinations of vermicompost and coir dust on microbial
respiration and nitrogen mineralization in soil was studied under laboratory
conditions. Treatment with 75% vermicompost and 25% coir dust (T2)
demonstrated the highest carbon mineralization and NH+
4-N contents followed
by treatment T1 (100% vermicompost) and T3 (50% vermicompost and 50% coir
dust). Despite the varied NO3-N contents at the initial stages of incubation, the
NO3-N content steadily increased for all the treatments at day 49 onwards. The
highest NO3-N content was observed in T1 followed by that in T2 and T3. Such
studies need be conducted under field conditions to reach a definite conclusion.
