Abstract
Yield mapping is increasingly used on combinable crops, but the agronomic questions about how the variability that it reveals should be managed remain largely unanswered. Yield maps are complex and often reveal patterns of variability that change markedly from season to season. This raises questions as to how useful they really are. An approach to analysing sequences of yield maps is described, which aims to simplify their complexity by identifying broad regions within which the season-to-season variation in yield is similar. Such regions are likely to reflect the effects of similar limiting factors, and so may provide a basis for cost-effective investigations of the causes of variable yields and identification of an appropriate response.
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