Section 3 Table of Contents

Table 1.3-2. Products registered for insect control in on-farm stored grain.
Treatment site Insecticide Amount to Use Comments
* Storcide II replaced Storcide and Reldan 4E. Distributors must have all Reldan 4E out of their possession prior to December 31, 2005. Farmers will be able to use the product (0.5 pt per 6.5 gal water) until December 2009 if previously purchased.
Residual spray on floor and sides of storage facility Beta-cyfluthrin (Tempo SC Ultra) 0.27–0.54 fl oz per 1 gal water For general surface spot, mist, or crack and crevice application. Use higher rate for longer residual. Avoid contact with treated surfaces until dry.
Chloropyrifos-methyl and deltamethrin (Storicide II*) 1.8 fl oz per 1 gal water Clear bins thoroughly before use. Apply only to empty grain bins using automated spray equipment. Use a downward spray from outside the bin. Apply finished spray mixture to equipment walls, and floor surfaces at 1 gal per 1,000 sq ft prior to storing or handling grain.
Deltamethrin (Suspend SC) 0.25–1.25 fl oz per 1 gal water
Malathion Many trade names are sold; check rates Many insects are resistant to malathion.
Pyrethrins + piperonyl butoxide Several trade names are sold; check rates Barley, corn, oats, rye, and wheat.
Grain protectants Chloropyrifos-methyl and deltamethrin (Storicide II*) Barley: 9.9 oz per 1,000 bushels Dilute the labeled rate in 5 gal of water. The final spray is 5 gal liquid per 1,000 bushels. See oil manufacturers’ rates for oil solutions.
Oats: 6.6 oz per 1,000 bushels
Sorghum: 11.6 oz per 1,000 bushels
Wheat 12.4 oz per 1,000 bushels
Pirimiphos-methyl (Actellic 5E) 9.2–12.3 oz per 5 gal water per 30 tons (1,071 bushels) or grain Labeled on corn and sorghum but not wheat. Grain may be used for feed immediately after application.
Methoprene (Diacon II) 1–14 fl oz per 5 gal water Insect growth regulator; does not kill adults but prevents the development of larvae into adults, stopping cycling of generations.
Surface treatments or topdressing after the bin is filled Pirimiphos-methyl (Actellic 5E) 3.0 oz per 2 gal of water per 1,000 sq ft of surface area Helps pervent establishment of migrating insects if grain cannot be moved.
Diatomaceous earth Several trade names are solid. Check rates. Cover all interior wall surfaces of empty storage area.
Bacillus thuringiensis Many trade names are sold. Check rates. For Indian meal moth and almond moth control. Does not control weevils or other beetles.
Methoprene (Diacon II) 0.034 fl oz (1ml) per 1 gal water per 1,000 sq ft of surface area; see label for further details Insect growth regulator; does not kill adults but prevents the development of larvae into adults, stopping cycling of generations.
pyrethrins plus piperonyl butoxide Several trade names sold; check rates Approved for barley, corn, oats, rye, sorghum, and wheat
Bin headspace Dichlofos resin strips Hang one strip per 1,000 cu ft of bin headspace Barley, corn, rye, oats, sorghum, and wheat. Protects against Indian meal moths.