Other products such as Reflex should not be applied more than once in a season. The product Viper contains Reflex, so Reflex should be applied following Viper application. Application of herbicides once soybeans start to flower could cause flower abortion and shortening of growth. Wick weeding of weeds using either Roundup or Touchdown should be applied when perennial weeds are in the bud to flower stage. The mild winter and early spring have favoured higher than average insect populations in most crops.
Spider mites are evident in some soybean fields, and are causing some puckering of growth.
Populations will continue to build under warm, dry weather. Natural control of mites will occur as humidity increases and temperatures are moderate. To check for mites, shake a soybean leaves over a sheet of white paper and look for tiny, cream to red coloured spiders. Leafhoppers rarely warrant control in soybeans, Threshold in edible beans prior to podding is 1 leafhopper on every second trifoliate. Hot, dry weather will favour numbers increasing.