title: Management of food and vegetable processing waste spiked with buffalo waste using earthworms (Eisenia fetida).
abstract: The present investigation was focused on the vermicomposting of food and vegetable processing waste (VW) mixed with buffalo dung (BW) under laboratory condition employing Eisenia fetida earthworm species. Four different proportions of VW and BW were prepared and subjected to vermicomposting after 3 weeks of pre-composting. After vermicomposting, nitrogen (7.82-20.73 g/kg), total available phosphate (4.80-11.74 g/kg) and total potassium (7.43-12.75 g/kg) content increased significantly as compared to initial feed stocks. Significant reduction was observed in pH (7.56 to 6.55), total organic carbon (48.25-23.54%) and organic matter (83.18-40.68%). Metal content (Fe, Cu, Zn and Ni) was higher in all the vermicomposts than feedstocks. Data on growth and reproduction of earthworm revealed that the highest biomass gain and fecundity of worms were attained in 100% BW followed by [BW75% + VW25%] > [BW50% + VW50%] > [BW25% + VW75%] feedstocks. Results evidenced the suitability of VW (up to 50%) spiked with BW for increasing earthworm population and in providing potent organic manure for agricultural applications.
authors.affiliation: Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar, 125001, India.
authors.forename: Kavita
authors.initials: K
authors.lastname: Sharma
authors.affiliation: Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar, 125001, India. vinodkgarg@yahoo.com.|Centre for Environmental Sciences and Technology, Central University of Punjab, Bathinda, 151001, India. vinodkgarg@yahoo.com.
authors.forename: V K
authors.initials: VK
authors.lastname: Garg
mesh_terms: D000818:Animals; D018533:Biomass; D002020:Buffaloes; D005243:Feces / Q000737:chemistry*; D005298:Fertility / Q000187:drug effects; D008372:Manure; D009835:Oligochaeta / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism* / Q000502:physiology; D012987:Soil; D014675:Vegetables / Q000737:chemistry*; D018505:Waste Management / Q000379:methods*; D014866:Waste Products
chemical_list: D008372:Manure; D012987:Soil; D014866:Waste Products
keywords: Eisenia fetida; Heavy metals; NPK; Organic matter; Organic waste; Vermicomposting