Physico-chemical and microbiological study during conventional composting using different rates of rice straw and cattle manure mixture

Nurul Ain Abu Bakar, . and Mohamad Hariz Abdul Rahman, . and Nur Fariza Mohd Mohtar, . and Nur Alyani Shakri, . Physico-chemical and microbiological study during conventional composting using different rates of rice straw and cattle manure mixture. pp. 145-154. ISSN 1394-9829

Decomposition of rice straw and cattle manure using conventional composting were affected by factors including physico-chemical properties and microbiological activity. In this study physico-chemical characteristics and microbial population were monitored to understand the changes involved when different amounts of rice straw were composted with cattle manure. Three combinations of rice straw with cattle manure at the rate of 120 kg:80 kg for B1 140 kg:80 kg for B2 and 160 kg:80 kg for B3 and composted for 60 days were studied. Temperature pH electrical conductivity (EC) moisture and C/N were measured. Diversity of mesophilic bacteria and fungi were monitored using plate count technique. Highest temperature of compost was observed in B1 and B2 reaching 65 C which dropped gradually towards ambient temperature. C/N ratio dropped rapidly during the first two weeks for B1 and B2 while the ratio of B3 decreased slowly. Population of microorganisms showed higher number for mesophilic bacteria ranging from 8.3 “ 9.0 log CFU/mL compared to fungi ranging from 7.5 “ 8.5 log CFU/mL during composting. Correlating physicochemical analysis with microorganism diversity revealed that the microorganisms required an optimum range of substrate for growth in order to decompose organic materials successfully.

Full text available from: Official URL: http://jtafs.mardi.gov.my/jtafs/45-2/straw.pdf

Abstract

Decomposition of rice straw and cattle manure using conventional composting were affected by factors including physico-chemical properties and microbiological activity. In this study physico-chemical characteristics and microbial population were monitored to understand the changes involved when different amounts of rice straw were composted with cattle manure. Three combinations of rice straw with cattle manure at the rate of 120 kg:80 kg for B1 140 kg:80 kg for B2 and 160 kg:80 kg for B3 and composted for 60 days were studied. Temperature pH electrical conductivity (EC) moisture and C/N were measured. Diversity of mesophilic bacteria and fungi were monitored using plate count technique. Highest temperature of compost was observed in B1 and B2 reaching 65 C which dropped gradually towards ambient temperature. C/N ratio dropped rapidly during the first two weeks for B1 and B2 while the ratio of B3 decreased slowly. Population of microorganisms showed higher number for mesophilic bacteria ranging from 8.3 “ 9.0 log CFU/mL compared to fungi ranging from 7.5 “ 8.5 log CFU/mL during composting. Correlating physicochemical analysis with microorganism diversity revealed that the microorganisms required an optimum range of substrate for growth in order to decompose organic materials successfully.

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Item Type:	Article
AGROVOC Term:	Physicochemical properties
AGROVOC Term:	Composting
AGROVOC Term:	Microbiological analysis
AGROVOC Term:	Rice straw
AGROVOC Term:	Animal manures
AGROVOC Term:	Temperature
AGROVOC Term:	Electrical conductivity
AGROVOC Term:	Moisture content
AGROVOC Term:	Bacteria
AGROVOC Term:	Fungi
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/24389

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