3419: Delayed nutrient application affects mineralisation rate during composting of plant residues
(2005) Delayed nutrient application affects mineralisation rate during composting of plant residues. Bioresource Technology 96:pp. 1093-1101.*
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Summary
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.
| Document Language: | English |
|---|---|
| Keywords: | Composting; Nitrogen mineralisation; Growing medium; Plant residues; Decomposition |
| Subject Areas: | 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 |
| Funding Part: | 25-75% |
| Orgprints ID Number: | 3419 |
| Contact: | Dresbøll, Dorte Bodin |
| Deposited On: | 30 March 2005 |
| EPrint Type: | Journal paper |
| Published?: | Published |
| Peer Review Status: | Peer-reviewed and accepted |
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