Effects of lime on pasture production on soils in the North Island of New Zealand 5. Description of a lime recommendation scheme

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Abstract
A lime recommendation scheme for established pastures on mineral soils is described. The scheme is based on a simple model, using soil pH, to estimate the size of pasture responses to lime at 3 rates of application (1.25, 2.5, and 5.0 t/ha). The estimated pasture production responses to lime are converted to increases in animal production, from which the potential economic benefits of liming are calculated. The limitations and accuracy of the model are discussed. The importance of liming relative to fertiliser nutrient inputs is also discussed and, in particular, it is concluded that lime and fertiliser inputs should be assessed independently. Recommendations for the use of lime on organic soils are also presented.

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