Nutrient changes and biodynamics of epigeic earthworm Perionyx excavatus (Perrier) during recycling of some agriculture wastes

• Published in: Bioresource technology 2007-05, Vol.98 (8), p.1608-1614
• Main Author: Suthar, Surendra
• Format: Article
• Language: English
• Subjects: Agriculture - methods; Agriculture waste; Agronomy. Soil science and plant productions; Analysis of Variance; Animals; Applied sciences; Biological and medical sciences; Biological treatment of sewage sludges and wastes; Biomass production; Biotechnology; C:N ratio; Carbon - metabolism; Cocoon; Cow dung; Crop residues; Environment and pollution; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Fym; General agronomy. Plant production; Industrial applications and implications. Economical aspects; Manure; Nitrogen - metabolism; Oligochaeta - growth & development; Oligochaeta - metabolism; Perionyx excavatus; Phosphorus - metabolism; Plant Stems - metabolism; Pollution; Potassium - metabolism; Refuse Disposal - methods; Reproduction - physiology; Sheep manure; Soil; Sorghum vulgare; Time Factors; Use of agricultural and forest wastes. Biomass use, bioconversion; Vermicomposting; Wastes
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2006.06.001

Potential of an oriental composting earthworm: Perionyx excavatus (Perrier) to decompose waste resources generated from agricultural practices (crop residues, farm yard manure, and cattle dung) was studied for 150 days under laboratory conditions. At the end of experiment, all vermibeds showed significant decrease in their organic C content (∼21–29%), while increase in total N (∼91–144%), available P (∼63–105%), and exchangeable K (∼45–90%). P. excavatus showed maximum individual live weight (662.05 mg) after 120 days in MIXED (mixed crop residues + cow dung in 1:1) substrate. The maximum growth rate (mg worm −1 day −1) was between 3.79 ± 0.08 and 2.35 ± 0.16 on different substrates. The mean number of cocoon production was between 394.3 ± 23.2 and 690.7 ± 23.2 for different experimental beddings. MIXED bedding showed maximum reproduction rate (0.23 ± 0.004 cocoons worm −1 day −1), whereas farmyard manure bedding (FYM) showed least value (0.15 ± 0.002 cocoons worm −1 day −1). During vermicomposting, the total mortality in worms’ population was recorded between 0% (in MIXED) and 21.7% (in Jowar straw ( Sorghum vulgare) + millet straw ( Pennisenum typhoides) + sheep manure in 1:1:2 ratio (JMS)). The waste decomposition and earthworm production was associated strongly with the quality of the substrate, especially with their chemical as well as biological composition.