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Symbiotic nitrogen fixation and N-transfer in a grass-white clover mixture

Vinther, Finn P. (2000) Symbiotic nitrogen fixation and N-transfer in a grass-white clover mixture. Grassland Science in Europe, 5, pp. 415-417.

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Summary

Symbiotic N2 fixation (SNF) and transfer of fixed N from clover to grass in a grass-white clover mixture was measured during two years using 15N isotope dilution techniques. White clover derived from 87 to 99% of its N from the atmosphere. The total SNF ranged from 150 to 277 kg N ha-1 yr-1, which corresponded to 34-45 mg N fixed per gram of white clover dry weight. The transfer of fixed N from clover to grass corresponded to approximately 10 kg N ha-1 yr-1.


EPrint Type:Journal paper
Keywords:N2 fixation, N transfer, Perennial ryegrass, white clover
Subjects: Soil > Nutrient turnover
Soil > Soil quality
Soil > Soil quality > Soil biology
Crop husbandry > Production systems > Pasture and forage crops
Research affiliation: Denmark > DARCOF I (1996-2001) > I.2 Nitrogen fixation, recycling and leaching in organic cropping systems
Deposited By: Vinther, Senior scientist Finn P.
ID Code:178
Deposited On:11 Oct 2002
Last Modified:12 Apr 2010 07:27
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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