By Michael Staton, Michigan State University Extension Soybean Educator, with additional comments from Dr. Laura Lindsey, OSU Extension State Soybean Specialist.
Are foliar fungicides plus insecticide tank mixture applications to soybeans profitable? On-farm research results collected from 2017 to 2019 by Michigan State University Extension can help soybean producers decide if they should apply foliar fungicide and insecticide tank mixtures in 2020. Similar research has also been performed in Ohio and across states in the North Central Region.
Soybean producers are interested in increasing soybean yields and income by applying foliar tank mixtures of a fungicide and an insecticide. However, extension entomologists do not recommend insurance tank mixes like this for a variety of reasons, unless insects are over threshold. The Michigan soybean on-farm research program coordinated a total of 15 trials from 2017 to 2019 to evaluate the yield and income performance of foliar fungicide and insecticide tank mixtures.