EFFECT OF ROWCOVERS AND INSECTICIDE SPRAYS ON INSECT DAMAGE TO STRAWBERRIES
Nonwoven rowcovers were applied over strawberries in teh fall with and without insecticide (malathion) to determine their effect on tarnished plant bug (Lygus lineolaris) and strawberry bud weevil (Anthomonus signatus) injury over two harvest seasons. Rowcovers increased the number and weight of marketable fruit. Tarnished plant bug injury was reduced by the use of rowcovers in 1990, regardless of insecticide application. In 1991, rowcovers reduced tarnished plant bug injury only when a fall insecticide was applied. Rowcovers increased the number of flower buds killed by the strawberry bud weevil where no insecticide was used in 1990, but had no significant effect on the number of buds killed in 1991. The effect of rowcovers on insect injury to strawberries appears to depend upon the overwintering habits of the invidivual insects, and the prevailing weather patterns during a given season.
McCue, John J., Handley, David T. and Pollard, James E. (1993). EFFECT OF ROWCOVERS AND INSECTICIDE SPRAYS ON INSECT DAMAGE TO STRAWBERRIES. Acta Hortic. 348, 500-503