Journal article

The ‘Dairy Nitrogen Fertiliser Advisor’ – A Method of Testing Farmers’ Fertiliser Decisions Against a Meta-analysis N-response Function’

Bill Malcolm, M Stott, C Gourley, M Hannah, M Cox

Australian Farm Business Management Journal | AFBM Network | Published : 2018

Abstract

Decisions about using N fertiliser rely typically on rules based on expected average pasture responses to N applied, a flawed criterion from the perspective of production economic theory. In this paper, the rationale for a web-based tool called the ‘Dairy Nitrogen Fertiliser Advisor’ (the ‘N-Advisor’) is presented. The tool uses marginal analysis to inform dairy farmers and their advisors about how a range of N applications applied to a particular paddock for a particular grazing rotation add to profits. The tool contains response functions for each Australian state and season derived from a metaanalysis of experiments in pasture yield response to nitrogenous fertiliser undertaken across Au..

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University of Melbourne Researchers