title: Changes in biochemical and microbiological parameters during the period of rapid composting of dairy manure with rice chaff.
abstract: Various parameters were measured during the period of composting of dairy manure and rice chaff in different ratios (dairy manure/rice chaff=V/V, pile 1: 75/25; pile 2: 80/20; pile 3: 85/15) to evaluate their suitability as indicators for the composting process. The temperature in pile 1 increased rapidly and remained above 60 °C for 30 days, while the temperature in pile 3 increased slowly relative to the other two piles. Furthermore, the degradation of organic substrates, as indicated by the reduction of C/N ratio, was rapid in pile 1 (below 20% 28 days after beginning of the composting). The major fluctuations of various water-soluble fractions in all piles were observed during the first 3 weeks, and the results in general showed that the highest microbial populations and enzymatic activities also appeared in this phase. Various parameters indicated that the rapid composting method was a feasible one for treating agricultural wastes.
authors.affiliation: Jiangsu Key Laboratory for Organic Solid Waste Utilization, Nanjing Agricultural University, Nanjing 210095, China.
authors.forename: Dongyang
authors.initials: D
authors.lastname: Liu
authors.forename: Ruifu
authors.initials: R
authors.lastname: Zhang
authors.forename: Hongsheng
authors.initials: H
authors.lastname: Wu
authors.forename: Dabing
authors.initials: D
authors.lastname: Xu
authors.forename: Zhu
authors.initials: Z
authors.lastname: Tang
authors.forename: Guanghui
authors.initials: G
authors.lastname: Yu
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Xu
authors.forename: Qirong
authors.initials: Q
authors.lastname: Shen
mesh_terms: D000383:Agriculture / Q000379:methods*; D000818:Animals; D002244:Carbon / Q000378:metabolism; D002417:Cattle; D008372:Manure / Q000032:analysis* / Q000382:microbiology*; D012275:Oryza / Q000737:chemistry*; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D008372:Manure; D012987:Soil; D002244:Carbon