Summary
The evolving challenges facing New Zealand's agricultural sector, particularly in dairy and arable farming, include rising costs, regulations, and environmental sustainability goals. In response, this study evaluated the potential benefits of enhancing nutrient circularity in a collective dairy and arable farming system aimed to reduce synthetic fertiliser use, lower greenhouse gas (GHG) emissions, and decrease nitrogen (N) leaching. Using an “Innovation System Approach” that included Farmax Dairy and OverseerFM, a North Otago dairy and arable farm system was modelled to compare current practices with two scenarios aimed at optimising manure use for arable production. Scenario 1 introduced an off-paddock facility for restricted autumn grazing and wintering cows, with collected manure appli
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