Skip to main content
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, Holger

Abstract

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-VALUE

Published in

Acta Agriculturae Scandinavica
1991, 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