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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. ...
The effect of teeth condition on the intake of grazing sheep
(Lincoln College, University of Canterbury, 1971)
There is a real need to know what effect teeth have on grazing efficiency of sheep. The normal farming practice to cull ewes with teeth that are no longer considered useful, while this may be a sound practice, there is not ...