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Phosphorus losses through transfer, soil erosion and runoff : processes and implications
(Lincoln College and University of Canterbury. Centre for Resource Management., 1985-12)
Phosphate rock is a strategic material upon which pastoral agriculture and all New Zealanders depend. Phosphate fertilizer has no close substitute, and is, therefore an important limiting factor to agricultural productivity. ...
North Island maize production, 1983-84
(Lincoln College. Agricultural and Economics Research Unit., 1985-05)
Maize is used primarily for domestic requirements in compound stock food, starch, distilling, breakfast foods, with limited amounts exported. A small area of maize is used as a fodder crop (3813 ha in 1982) for cattle ...