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Summary: Defoliation is one of the most readily observed types of insect injury to soybean. A number of different insect species defoliate soybean, and often it is the combined injury of two or more defoliating insects that results in economic damage. This presentation will help consultants, crop scouts, and growers and other practitioners in U.S. soybean-producing states to understand more about insect defoliation and how it can be managed. Specifically in this presentation, practitioners will learn: how insect defoliation is related to yield loss, how to accurately estimate insect defoliation, and how to use general soybean insect defoliation thresholds. By the end of this presentation, practitioners should know more about insect defoliation of soybean and how to use this information to make appropriate soybean insect pest management decisions.
United Soybean Board (USB) farmer-leaders develop and maintain partnerships with U.S. land grant universities and U.S. ag-focused research organizations such as the Plant Management Network to increase the transfer of checkoff-funded applied and practical production research information to U.S. soybean farmers. USB neither recommends nor discourages the implementation of any advice contained herein, and is not liable for the use or misuse of the information provided.