Control of Black Grass Bugs (Labops hesperius Uhler) in Northern New Mexico

Abstract

Insecticides applied to improved wheatgrass pastures in northern New Mexico in the springs of 1976 and 1977 were all shown to reduce population of black grass bugs significantly (P<.01). Herbage yields were decreased as much as 50% on untreated crested wheatgrass plots in 1976. Plots treated with trichlorofon produced significantly (P<.05) higher herbage yields than the untreated plots. Malathion at rates as low as 354 g/ha of active ingredient were effective in controlling this pest.