Foray^® 76B

Caterpillars must ingest Foray 76B for it to be effective. When forest health professionals determine the timing is right, certified applicators apply Foray 76B to caterpillar-infested trees and forests. Shortly after Foray 76B is eaten, it causes a reaction in the caterpillar’s gut; the caterpillar quickly stops feeding, the gut ruptures, and the caterpillar dies within a day or two.

Foray 76B can be applied either neat (undiluted) or diluted with water depending on program needs and application criteria; it should always be applied according to label directions for best results. Timing of Foray 76B spray is critical as well as good spray coverage. As caterpillars do not hatch and develop all at the same time, sometimes a second application may be required. Foray 76B is more effective on younger caterpillars, so more than one application may be needed to control later emerging caterpillars. A second spray may also be required when caterpillar populations are extremely high. Various caterpillar species have varying levels of susceptibility to the Btk toxins; consequently there is a wide range of dosages identified on the label to ensure that effective control of the target species is obtained. (See below.)

Note: Foray 76B differs from Foray 48B in that Foray 76B was initially developed as a higher potency, more concentrated formulation, primarily used to control defoliators such as Budworms and Tussock Moths in coniferous forests. Foray 76B can be used to control lepidopteran defoliators in deciduous forests too, but caution must be taken to ensure that adequate atomization and foliar deposition occurs. Traditionally higher volumes (with slightly larger droplet sizes) are applied to control defoliators in deciduous forests

Suggested Rate Range for Control of Forest Pests (U.S. label rates are used as an example.) US and Canadian labels are included below (see Downloads); please contact your local supplier for an in-country label.