Estimating Weed and Insect Development, In-Season Yield Losses, and Economic Thresholds
Document Type
Book Chapter
Publication Date
2017
Abstract
This chapter discusses and demonstrates how to estimate the impact of weed and insect pests on yield losses and how to calculate economic thresholds. Techniques for converting pest population into anticipated yield loss are discussed. The models used calculate yield losses and economic thresholds are pest specific, with the economic threshold, the point where the cost of the control equals the estimated cost of yield loss. For weeds, a hyperbolic model is used to estimate how weed density impacts crop yields. For weeds and insect development, growing degrees have been used to assess phenological development. Examples are provided.
Publication Title
Practical Mathematics for Precision Farming
DOI of Published Version
10.2134/practicalmath2017.0106
Recommended Citation
Clay, Sharon A. and Varenhorst, Adam, "Estimating Weed and Insect Development, In-Season Yield Losses, and Economic Thresholds" (2017). Agronomy, Horticulture and Plant Science Faculty Publications. 74.
https://openprairie.sdstate.edu/plant_faculty_pubs/74