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Delayed nutrient application affects mineralisation rate during composting of plant residues

Dresbøll, Dorte Bodin and Thorup-Kristensen, Kristian (2005) Delayed nutrient application affects mineralisation rate during composting of plant residues. Bioresource Technology, 96, pp. 1093-1101.

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The hypothesis that delayed addition of nutrient rich material to compost would influence the mineralisation pattern was investigated by studying N turnover in compost based on wheat straw and clover-grass hay. After 7½ weeks of composting almost twice as much N was mineralised when the addition of of some of the N-rich clover-grass hay was postponed, suggesting that this influenced the microbial succession. The delayed addition resulted in a second temperature peak and a decline in the pH. Despite the altered conditions no significant effect was observed on the weight loss or loss of C and N. In conclusion, compost processes can in a simple way be affected by delayed substrate application leading to a higher nutrient availability without altering other parameters significantly.

EPrint Type:Journal paper
Keywords:Composting; Nitrogen mineralisation; Growing medium; Plant residues; Decomposition
Subjects: Crop husbandry > Production systems > Vegetables
Crop husbandry > Composting and manuring
Crop husbandry > Production systems > Ornamentals, flower bulbs and tree nurseries
Research affiliation: Denmark > DARCOF II (2000-2005) > I. 1 (ORTCTOM) Organic production of cucumber and tomato
Denmark > SOAR - Research School for Organic Agriculture and Food Systems
Deposited By: Dresbøll, Dorte Bodin
ID Code:3419
Deposited On:30 Mar 2005
Last Modified:12 Apr 2010 07:29
Document Language:English
Refereed:Peer-reviewed and accepted

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