Pyrethroid insecticides are highly effective at controlling western bean cutworms in both corn and dry beans. Retrieved from " https: Newly hatched larvae are dark with black heads. In corn, Baute says the eggs are laid on the upper leaves of the plant. There is one generation per year. There are no records of western bean cutworm naturally feeding on soybean. Only Bt corn hybrids that express the Cry1F protein offer effective control of western bean cutworm.
Integrated Pest Management Populations: Abstract The western bean cutworm, Striacosta albicosta Smith Lepidoptera: Bt corn with the Cry1F trait can no longer be relied upon for good western bean cutworm control, so these fields should be scouted too. To know for sure that they are WBC, watch how the way. Western bean cutworm moths lay their eggs on the undersides of dry bean leaves.
Western bean cutworm peak flight is occurring in dry beans | MSU Extension
First instar western bean cutworm feeding on a dry bean leaf. Female moths will mate and lay eggs during July and August and will oviposit on a variety of cultivated and wild plants, although dryland beans and field corn are the most commonly chosen oviposition sites. Pace of arrival surprising to most The number and arrangement of western bean cutworm eggs on the upper surface of a corn leaf can help growers identify them. Western bean cutworm Striacosta albicosta is a species of moth of the Noctuidae family and the only member of the Striacosta genus. Pyrethroids are the most effective insecticides for control of western bean cutworm in dry beans. Use of pheromone traps to target scouting efforts is recommended.
If eggs have not hatched, monitor for the color change. Strategies for controlling pests are an integral part of any agricultural management plan. Follow label directions and pay attention to spray guidelines. Text format Comments Plain text. Photos courtesy of Chris DiFonzo, Michigan State University Description and life cycle Although western bean cutworms can be confused with other corn pests, there are some distinctive characteristics. Adult western bean cutworms have forewings with a mixture of buff, tan and grey with a cream-colored stripe extending nearly down the front edge; two light spots and a "boomerang" touch the stripe. Air temperature before, during, and after application can influence control with burndown.