01 Nov 2000
Factors contolling potassium fertility in hill country pastures
R Tillman and S Officer
The steeply undulating pastures of New Zealand hill country have historically been unresponsive to potassium (K) fertilizers. However, decades of nutrient removal and transfer by stock have suggested that K deficiencies may be developing. The onset of K deficiency is difficult to detect in hill country pastures because of the inherent variability in K status across the landscape and within landscape units due to transfer of K by animals. Recent studies in
the North Island identified the main factors controlling K fertility in hill country pastures. The work may create opportunities for managing K fertility in hill country using precision application technology.
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BC 2000 #2 p26Size: 0.08 MB
