Comparison of Models for Estimating Yield Loss Caused by Leaf Rust (Puccinia hordei) on Zephyr Barley in New Zealand

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Abstract
The accurate assessment of yield loss is an important component of any comprehensive disease management scheme. Three types of disease-loss models for estimating barley yield loss caused by leaf rust (P. hordei) were compared. The critical point, area-under-curve and multiple point models were evaluated using 4 selected statistical criteria. Although all models were satisfactory, several multiple point models best predicted yield loss.