Vermicompost and Vermiwash

Vermicompost and Vermiwash
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Vermicompost and Vermiwash

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Publisher: Agrotech Publications
ISBN: 9788183210881
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Availability: In Stock
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Preface Historically, it was the scarcity of new materials that has been the driving factor for recycling of used materials. In the agricultural sector, it was the lack of external nutrient sources or problems with soil degradation that has forced people to care for a functioning cycling of organic matter, hitting two birds with one stone nutrient supply and long-term soil sustainability. This book incorporates chapters that give up to date insight into processes, the organisms involved, and different kinds of problems associated with compost production. Centralized dumps or incineration plants are often the simple answer to growing waste problems. The sustainable agriculture is increasingly demanding environmentally sound recycling programmes. The approaches are very different and range from treatment of bulk wastes to source separated collection of organic wastes. The latter yields the best quality substrate for any further treatment, but also needs a considerable level of understanding by the people. Also the approaches for treatment vary, both in their size and technology. Be it small or big units, or be it anaerobic digestion or composting. If precaution is taken for very few fundamentals like quality of input material, aeration and water content, the process will work without any further knowledge about it. For this reason, research to improve, the process has long been neglected. In particular little attention has been given to the organisms that actually do the job, the microorganisms. The concept of recycling and composting has gained increasing acceptance over the past three decades. The contribution of earthworms to vermicomposting has been imported to industrialized and non-industrialized countries. We have restricted our efforts to only few species Eisenia foetida, Eudrilus eugeniae, Perionyx excabatus, etc. but with almost 4000 megadrile species available to us, we must search for additional species they may be harnessed to
assist in the decomposition and transformation of our waste product into useful materials. The microbial connection with earthworm activity is emerging as central theme in soil nutrient process studies. It is clear that earthworm activity accelerates crop residue decomposition and nutrient mineralization, and there is growing evidence that microbes serve as a primary source of nutrition for earthworms. In an ecological sense, the relationship might be considered a Reystone association Parnelee et al., 1998 . With respect to residue quality, earthworms may selectively ingest high-quality residues Bohlen et al., 1995 , but their relative effects on decomposition may be greater on low-quality residue which earthworms fragment, inoculate with microbes, and incorporate into soil. High quality substrates tend to