Exploring options to reduce nitrogen leaching while maintaining profitability within a Canterbury farm business comprising several distinct enterprises

Autor:	P. C. Beukes, T. Chikazhe, J. P. Edwards
Rok vydání:	2018
Předmět:	Environmental engineering Soil Science chemistry.chemical_element Plant Science Milk production Nitrogen chemistry Environmental science Profitability index Leaching (agriculture) Agronomy and Crop Science Dairy farming Ecology Evolution Behavior and Systematics Nature and Landscape Conservation
Zdroj:	Journal of New Zealand Grasslands. :191-194
ISSN:	2463-2880 2463-2872
DOI:	10.33584/jnzg.2018.80.324
Popis:	This paper reports on a study evaluating the effects of nitrogen (N) mitigations on N leaching and profitability across all hectares of a farm business consisting of a dairy platform, dairy support and beef blocks. Two different models were used, each with their own strengths and weaknesses. Mitigation options focussed on N fertiliser use, plantain-ryegrass-clover diverse pastures, cropping regime, and animal and feed movements between the blocks. A combination of less N fertiliser, replacing kale with fodder beet for wintering to reduce the crop area, an oats catch-crop following autumn-harvested fodder beet, diverse pastures on a proportion of platform and support blocks, and wintering non-pregnant cows on the beef block reduced N leaching by 19%. Profitability was not affected by these mitigations. Profitability did not increase, but N leaching did, when changing to an all-dairy business model. Nitrogen leaching reductions can be achieved if all enterprises implement some or all of these mitigations.
Databáze:	OpenAIRE
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