ID

444-203 (SPES-74P)

Authors as Published

Sean Malone, Research Associate; David L. Holshouser, Extension Soybean Specialist; D. Ames Herbert, Jr., Extension Entomologist; Virginia Tech, and Brian P. Jones, Research Associate, The Pennsylvania State University

This publication is available in a PDF file format only.

What is LAI? Leaf area index (LAI) is the ratio of leaf area to land area. Soybean requires LAI values of at least 3.5 to 4.0 by early to mid-reproductive developmental stages to achieve maximum yield for that year and environment. A soybean crop that does not achieve adequate LAI could be at risk to yield loss from insect leaf-feeders, whereas, fields with high (4+) LAI can sustain significant insect feeding with little to no effect on yield. This publication will aid producers in evaluating soybean fields at risk to yield reduction from leaf-feeding insects


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Publication Date

November 13, 2018