Research article - Peer-reviewed, 1991
Carbon and Nitrogen Mineralization and Crop Uptake of Nitrogen from Six Green Manure Legumes Decomposing in Soil
Marstorp, Håkan; Kirchmann, HolgerAbstract
Carbon and nitrogen mineralization from six green-manure legumes was studied in an incubation experiment. The values measured were fitted to a two-component and a one-component first-order model, respectively. Estimated parameters were compared. During 115 days of incubation approximately 30-35% of total N in white clover, black medic and subterranean clover was mineralized. Red clover and persian clover mineralized only 20% and egyptian clover 17%. White clover, black medic and subterranean clover showed a net mineralization during the whole incubation period. Red clover, persian clover and egyptian clover showed apparently an initial immobilization followed by a net mineralization after approximately 2 weeks. In a pot experiment, N uptake in rye grass from the six legumes was measured and comparisons were made with the incubation experiment after corrections for temperature differences. The amount of N harvested in the pot experiment was approximately 90% of the net N mineralization during decomposition.Keywords
TRIFOLIUM-PRATENSE L; TRIFOLIUM-REPENS L; T-RESUPINATUM L; T-ALEXANDRINUM L; T-SUBTERRANEUM L; MEDICAGO-LUPULINA L; MINERALIZATION RATE; K-VALUEPublished in
Acta Agriculturae Scandinavica1991, volume: 41, number: 3, pages: 243-252
Publisher: ROYAL SWEDISH ACAD AGR FOREST
Authors' information
Marstorp, Håkan
Swedish University of Agricultural Sciences, Department of Soil Sciences
Swedish University of Agricultural Sciences, Department of Soil Sciences
UKÄ Subject classification
Agricultural Science
Soil Science
Publication Identifiers
DOI: https://doi.org/10.1080/00015129109439906
URI (permanent link to this page)
https://res.slu.se/id/publ/44230