Evaluation of Composts from Agricultural Wastes with Fish Pond Sediment as Bulking Agent to Improve Compost Quality. Issue 7 (4th March 2013)

• Record Type: Journal Article
• Authors: Karak, Tanmoy; Bhattacharyya, Pradip; Paul, Ranjit Kumar; Das, Tapati; Saha, Subhrajit K.
• Is Part Of: Clean. Volume 41:Issue 7(2013:Jul.)
• Page Start: 711
• Page End: 723
• Publication Date: 2013-03-04
• Subjects: Combined analysis -- Compost maturity -- Germination index -- Heavy metal -- Homogeneity of variance; Water quality -- Periodicals; Water -- Pollution -- Periodicals; Pollution -- Periodicals; Bioremediation -- Periodicals; Sewage -- Periodicals; Water chemistry -- Periodicals; 333.7205
• DOI: 10.1002/clen.201200142
• Languages: English
• ISSNs: 1863-0650

Abstract

Abstract: Composts with five different ratios of agricultural wastes, viz. rice straw (RS), wheat straw (WS), potato plant (PP), and mustard stover (MS) were prepared with or without fish pond bottom sediment to investigate the compost maturity and their suitability for field application. The composting process was monitored through the changes in physico‐chemical parameters and germination index (GI) at every 7 days interval of the composting process. All the composts were dark brown and smelled like forest soil within 56 days of composting, which reflected its matured status. On the basis of the physico‐chemical parameters (bulk density: 0.84 g/cm 3 ; pH 7.05; electrical conductivity: 3.52 mS/cm; cation exchange capacity:82.4 cmol/kg; total carbon:321.4 g/kg; total nitrogen: 16.9 g/kg; As: 6.8 mg/kg; Cd: 2.96 mg/kg; Cr: 29.6 mg/kg, Cu: 243.6 mg/kg; Hg: 0.019 mg/kg; Ni: 24.3 mg/kg; Pb: 62.1 mg/kg and Zn: 812 mg/kg) and GI (89–96%), it could be concluded that RS/WS/PP/MS, 1:1:2:1 v/v/v/v with fish pond sediment produced better compost in accordance with the Indian compost standard. Application of a combined randomized block design analysis revealed that there is a significant difference in the responses of the five composts, in relation to the time of composting. Hierarchical clustering algorithm was applied with a view to form homogeneous groups of five different composts on the basis of different physico‐chemical parameters. Therefore, the ratio of waste incorporation is an important decision for composting and addition of pond sediment can improve the quality of compost. Abstract : The study demonstrated that compost prepared with fish pond sediment performed better compared to those without. However, physico‐chemical properties of five different composts revealed that all samples showed adequate levels of organic carbon and correspondingly high CEC values.