期刊
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
卷 94, 期 -, 页码 90-97出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2014.06.023
关键词
Compost; Manures; Paddy straw; Phosphorus fractions
The study was conducted to reveal the type of phosphorus (P) fractions present in mature compost prepared by co-composting paddy straw (P.S) with cattle manure (CM), farm yard manure (FYM) and poultry manure (PM), each added separately as nitrogen (N) and P source. A consortium of phytate mineralizing fungi developed by including Aspergillus niger ITCC 6719, Aspergillus flavus ITCC 6720 and Trichoderma harzianum ITCC 6721 was applied for recovery of P from plant and animal residues. Chemical evaluation of compost after 4 months of aerobic decomposition revealed that inoculation improved the sodium bicarbonate-extractable P content of CM and FYM supplemented P.S compost by 32.3% and 23.5% respectively compared with their respective un-inoculated control. However, the peak values for water soluble-P fractions were recorded in CM straw compost followed by PM straw compost. Fungal inoculation also improved the agronomic quality of PM straw compost as the latter had the highest total P content and lowest C:N and E4/E6 ratio of 18:1 and 5.36:1 respectively. The recovery of organic P from agricultural residue has the potential to reduce the application of synthetic P fertilizer. P-enriched organic manure can offer potential environment and economic benefits to farmers under sustainable agriculture. (C) 2014 Elsevier Ltd. All rights reserved.
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