The economic thresholds for implementing control of 24 wheat insect pests from Central Europe and North America are discussed. Additional studies on wheat pests are necessary to better define the existing thresholds.
Wellso, Stanley G. and Wetzel, Theo
"Economic Thresholds for Central European and North American Wheat Insects,"
The Great Lakes Entomologist, vol 20
Available at: https://scholar.valpo.edu/tgle/vol20/iss1/6