"In Georgia, if when we observed this pest (kudzu bug) in a county for the first time, the next year we saw populations that were treatable, and you had potential yield lose," Roberts said. "We also, at least in our trials and on the farm, early plated soybeans tended to are at greater risk for economic damage.
Pull the trigger
Kudzu bugs have three host plants, ones they prefer to live and love on, kudzu, wisteria and soybeans. The trick to control in soybeans is to hit each immature, developing stage of each generation. A pyrethroid will do it. Scout June to August, when generations will start leaving kudzu for soybeans.
Apply an insecticide when:
-Sweep–net sampling catches one immature insect per sweep. Samples all areas of the field, including edges and the middle, taking care not to bias sampling along border rows where population build initially.
-As an alternative to sweep-net sampling, visual inspections lower in the canopy will suffice. If immature kudzu bugs are easily and repeatedly found on leaf petioles treatment is likely warranted.
Virtual scouting school
If you want to hone your soybean scouting skills, it's as easy as turning on a computer. The University of Tennessee Institute of Agriculture has partnered with the United Soybean Board and the Tennessee Soybean Promotion Board, using soybean checkoff funds, to create the Virtual Soybean Scout School.
The school consists of four brief videos, each led by UT Extension specialists. Watch them at www.UTCrops.com