Delayed nutrient application affects mineralisation rate during composting of plant residues
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Delayed nutrient application affects mineralisation rate during composting of plant residues. / Dresbøll, Dorte Bodin; Thorup-Kristensen, Kristian.
In: Bioresource Technology, Vol. 96, No. 10, 2005, p. 1093-1101.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Delayed nutrient application affects mineralisation rate during composting of plant residues
AU - Dresbøll, Dorte Bodin
AU - Thorup-Kristensen, Kristian
PY - 2005
Y1 - 2005
N2 - 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 7,5 weeks of composting almost twice as much N was mineralised when the addition 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.
AB - 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 7,5 weeks of composting almost twice as much N was mineralised when the addition 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.
U2 - 10.1016/j.biortech.2004.10.007
DO - 10.1016/j.biortech.2004.10.007
M3 - Journal article
C2 - 15683899
VL - 96
SP - 1093
EP - 1101
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
IS - 10
ER -
ID: 21133085