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An economic survey of New Zealand wheatgrowers: enterprise analysis survey no. 6, 1981-82
(Lincoln College. Agricultural Economics Research Unit., 1982)
This Report is the sixth in an annual series of economic surveys of New Zealand wheat growing farms. These surveys have been undertaken by the Agricultural Economics Research Unit at Lincoln College on behalf of Wheat ...
A systems approach to the economic evaluation of nitrogen fertiliser use in sheep farming enterprises
(Lincoln College, University of Canterbury, 1985)
An optimisation model is developed to evaluate the economic use of nitrogen fertiliser in sheep farming enterprises which depend on seasonal production of grass-legume pastures as the main source of feed. Nitrogen fertiliser ...
Tractor replacement policies and cost minimisation
(Lincoln College. Agricultural and Economics Research Unit, 1983-11)
Calculating the most appropriate replacement policy for farm tractors is a complex exercise made even more difficult because of inadequate data on how resale values and repair costs vary with tractor age and hours of ...