New Zealand Journal of Agricultural Research abstracts

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Constancy in pasture composition? Empirical measurements and mathematical models

D. Scott

AgResearch
P.O. Box 60
Lincoln, New Zealand

Abstract  A review of 702 sets of published pasture data show there is some constancy in the relative contribution of different species in pasture, with a high linear correlation between logarithm of percentage contribution and rank of a species. The best explicit model for mathematical description of pasture composition was the geometric series. The best of the random models was the pre-emptive function. The results are discussed in relation to the general theory of pasture composition and alternative pasture sampling techniques.

Keywords  pasture composition; simulation models

A04030; Received 12 April 2004; accepted 9 December 2005; Online publication date 16 May 2006
New Zealand Journal of Agricultural Research, 2006, Vol. 49: 183–190
0028–8233/06/4902–0183 © The Royal Society of New Zealand 2006

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