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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 ...
An economic evaluation of the use of herbicides in hill country pasture renovation in New Zealand : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Agricultural Science
(Lincoln College, University of Canterbury, 1988)
Non-arable New Zealand hill country pasture is characterised by a high proportion of low fertility grasses and weeds. This places limitations on their productive capacity. Aerial oversowing and topdressing has improved the ...