Potential of Allolobophora parva (Oligochaeta) in vermicomposting

Cow Urine for Enhancement of Biogas Production and Fertilizer Quality of Biogas Slurry

“…As cattle urine is rich in nitrogen ranging from 6.8 to 21.6 g L -1 [7] its use increases nitrogen content in biogas slurry and accordingly the order total nitrogen was found to be T 1 >T 2 >T 3 >T 4 >T 5 >T 0 . N, P, K values of T 0 was comparable to the report by S. Suther [18]. Although the value of available P was not changed appreciably, the value of exchangeable K was enhanced remarkably with the increase in cow urine proportion.…”

The potential reuse of soybean husk as feedstock of Eudrilus eugeniae in vermicomposting

“…The increasing pH could be stabilised in the later stage because of the ammonium oxidation by nitrifying bacteria and calcium carbonate precipitation 33. On the other hand, a decrease of pH in the final vermicompost was recorded in treatments with higher proportion of soybean husk, namely 1P:2S and S. The decrease in pH could be attributed to the production of CO 2 , ammonia, NO 3 − and organic acid by microbial decomposition during vermicomposting process, which lowered the pH of substrate 5, 7, 34. No significant change in pH was observed for 1P:1S because the equal combination between market‐rejected papaya and soybean husk could regulate and maintain the pH of vermicompost at neutral level.…”

“…It is actually a stabilisation process of organic materials (usually wastes) through the joint action of earthworms and microorganisms. Microbes are responsible for the biochemical degradation of organic matters, while earthworms are the important drivers to condition the substrate and alter the biological activity 5. It is an efficient and economical procedure6 that produces a humus‐like material known as vermicompost, which is a stabilised product having greater contents of most nutrients in forms that are readily taken up by plants 7…”

Nutrient recovery from urban forest leaf litter waste solids using Eisenia fetida

“…The maximum loss in TOC was recorded in T 4 , followed by T 1 , T 5 , T 2 and T 3 . There were about 4-10.07-fold decrease in TOC contents in all waste mixtures ( Suthar, 2009). This suggests the impact of quality of feed mixtures on C-mineralization rate in vermicomposting process.…”