David Chapman, Grant Edwards
Dairy farm businesses in many sub-regions of Canterbury will need to reduce their nitrate leaching losses to comply with regional environmental management plans. Dairy systems in Canterbury are based on two main parcels of land: 1) the milking platform and 2) support land for growing winter crops. The objective of this study was to compare two dairy systems, a ‘higher input’ (HIHE) and a ‘lower input’ (LIHE) milking platform system, over four years in Canterbury to assess their effects on production, profit, and nitrate leaching. Methodologically, farmlets with unreplicated herds of 29-34 cows were used, and three winter crop feeding options were also compared. Results indicated a more than two-fold range in total nitrate leached, from around 7.2 to 16.5 tonnes N per year, depending on the system and feeding option. The findings suggest that focusing solely on the milking platform can misrepresent the total environmental footprint. Importantly, there are alternative farming strategies available that could help Canterbury farmers reduce their nitrate leaching footprint. This research provides significant insights for enhancing agricultural sustainability in the region.
@article{505989f8-c460-4cc2-9ebe-0bed5805864a,
title={Nitrogen Leaching Production and Profit},
author={David Chapman and Grant Edwards},
year={2026},
language={en}
}TY - JOUR TI - Nitrogen Leaching Production and Profit AU - David Chapman AU - Grant Edwards PY - 2026 LA - en ER -
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