Journal ArticleDOI
A model to predict transformations and losses of nitrogen in UK pastures grazed by beef-cattle
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TLDR
Outputs from the model indicate that fertilizer N has a strong influence on ammonia volatilization, denitrification and leaching at a given site but that, over a range of sites with a given rate of fertilizer N, total loss and the proportions lost by the three processes are greatly influenced by the amount of N mineralized by the soil.Abstract:
The model simulates the cycling of N in grassland systems grazed by beef cattle and predicts the annual amount of N in liveweight gain, and the amounts lost through ammonia volatilization, denitrification and leaching, on the basis of fertilizer application and soil and site characteristics. It aims to provide a better understanding of the way in which these various factors interact in their influence on N transformations. The model has been programmed to run on IBM-compatible personal computers and responds rapidly to changes in input parameters.read more
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Book ChapterDOI
Nutrient cycling and soil fertility in the grazed pasture ecosystem
R.J. Haynes,P.H. Williams +1 more
TL;DR: In this paper, the authors reviewed the progress made in modeling the cycling of nutrients in pasture systems and the major emphasis is on the central role of the grazing animal in influencing soil fertility, particularly in the dung and urine patches.
Journal ArticleDOI
Nitrate leaching in temperate agroecosystems: sources, factors and mitigating strategies
Hong J. Di,Keith C. Cameron +1 more
TL;DR: In this article, the evidence of NO3ⓘ− leachinglosses from various land use systems, including cut grassland, grazed pastures, arable cropping, mixed cropping with pasture leys, organic farming, horticultural systems, and forest ecosystems are discussed.
Journal ArticleDOI
NOx And N2O Emissions From Soil
TL;DR: In this paper, a review of the atmospheric and ecological implications of NOx and N2O emissions from soils is presented, with particular emphasis placed on the atmospheric, ecological, and economic implications of this source.
Journal ArticleDOI
Potential of legume-based grassland–livestock systems in Europe: a review
Andreas Lüscher,Irene Mueller-Harvey,Jean-François Soussana,Robert M. Rees,Jean-Louis Peyraud +4 more
TL;DR: In this article, the authors proposed a legume-based grassland-livestock system for sustainable and competitive ruminant production systems, and suggested that forage legumes will become more important in the future.
Journal ArticleDOI
Nitrogen cycling in low input legume-based agriculture, with emphasis on legume/grass pastures
TL;DR: In this paper, a review of legume-grass pastures under grazing by livestock is presented, with most emphasis on temperate legume/grasspastures under moderate high production with modest N losses.
References
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