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Nitrate leaching following cultivation of contrasting temporary grassland.

Eriksen, J. and Søegaard, K. (2000) Nitrate leaching following cultivation of contrasting temporary grassland. Grassland Science in Europe, 5, pp. 577-579.

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Summary

The N-surplus in grazed grassland is much higher than in cut grassland. Therefore, the residual effects of three years of temporary grassland on nitrate leaching in the following cereal crop were determined. Grassland managements were either cut leys or grazing with dairy cows in both pure grass and grass-clover mixtures. The cows were fed two levels of N in the supplements. Grassland management had little effect on the subsequent nitrate leaching, which ranged from 6 to 36 kg N ha-1, even though the surplus after three years of grassland ranged from 36 to 984 kg N ha-1. This indicates that substantial losses occurred during the grassland period. Application of fertiliser-N to the cereals had a much larger effect on nitrate leaching. It is concluded that management in the first years following grassland cultivation is of considerable importance in reducing nitrate leaching losses.


EPrint Type:Journal paper
Subjects: Soil > Nutrient turnover
Research affiliation: Denmark > DARCOF II (2000-2005) > IV.1 (EXUNIT) Experimental units for research in organic farming systems
Denmark > DARCOF I (1996-2001) > I.2 Nitrogen fixation, recycling and leaching in organic cropping systems
Deposited By: Eriksen, Senior scientist Jørgen
ID Code:149
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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