Insecticidal seed coating

• US 5,849,320 A
• Filed: 06/13/1996
• Issued: 12/15/1998
• Est. Priority Date: 06/13/1996
• Status: Expired due to Term

• Current Assignee: Syngenta Crop Protection Incorporated (China National Chemical Corporation)
• Original Assignee: Novartis Corporation (Novartis Ag)
• Inventors: Chen, Yugu Ang, Turnblad, Kevin M.
• Primary Examiner(s): Levy, Neil S.
• Application Number:
  US08/664,052
• Time in Patent Office: 915 Days
• Field of Search: 504/100, 424/410, 424/412, 424/420
• US Class Current: 424/410
• CPC Class Codes: A01C 1/06 Coating or dressing seed

Abstract

The present invention relates to an insecticidal coating for a seed comprising one or more binders selected from the group consisting of polymers and copolymers of polyvinyl acetate, methyl cellulose, polyvinyl alcohol, vinylidene chloride, acrylic, cellulose, polyvinylpyrrolidone and polysaccharide and an insecticide wherein the binder forms a matrix for the insecticide; methods for producing said coating and the seed treated with the above described coating.

Additionally the invention concerns a method of controlling soil-borne insect pests, particularly Diabrotica spp., comprising applying to a seed an insecticidal coating as described above.

Claims

1. An insecticidal coating for a seed consisting of:

a. about 0.01 to 15% by weight of one or more binders selected from the group consisting of polymers and copolymers of polyvinyl acetate, methyl cellulose, polyvinyl alcohol, vinylidene chloride, acrylic, cellulose, polyvinylpyrrolidone, and polysaccharide,

b. about 0.005 to 50% by weight of an insecticidally effective amount of an insecticide selected from the group consisting of terbufos. chlorpyrifos, fipronil, chlorethoxyfos, tefluthrin, carbofuran, imidacloprid, tebupirimfos, methoprene and hydroprene, and

c. about 0.01% to about 20% of a film overcoat selected from the group consisting of methyl cellulose, hydroxypropylmethylcellulose, dextrin, gums, waxes, vegetable or paraffin oils, water soluble or water dispersible polysaccharides and their derivatives, alginates, starch, cellulose, synthetic polymers, polyethylene oxide, polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetate, polyethylene glycol and polymers and copolymers and mixtures thereof,

and optionally water,

wherein the binder forms a matrix for the insecticide on the seed.

2. The coating of claim 1 wherein the seed is selected from the group consisting of soybean, sugarbeet, sunflower, alfalfa, sorghum, rapeseed and tobacco.

3. The coating of claim 1 wherein the binder is a vinyl acetate-ethylene copolymer or polymer or copolymer of vinylidene chloride.

4. Viable seed coated with the coating according to claim 1.

6. A method of controlling insect pests from damaging a crop plant comprising applying to a seed an insecticidal coating according to claim 1.

8. A method of protecting emerging seedlings of a crop plant from one or more insect organisms in the seed growing soil environment which comprises applying to the seeds of the crop plant an insecticidally effective amount of a coating according to claim 1.

5. An insecticidal coating for a seed consisting of a binder in an amount from about 0.01 to about 15% of the weight of the seed wherein said binder is a vinyl acetate-ethylene copolymer or polymer or copolymer of vinylidene chloride and an insecticidally effective amount of an insecticide selected from the group consisting of imidicloprid, chlorpyrifos, fipronil, tefluthrin and tebupirimfos and in the range from about 0.005 to about 50% of the weight of the seed, and about 0.01% to about 20% of a film overcoat selected from the group consisting of methyl cellulose, hydroxypropylmethylcellulose, polyvinyl acetate and polethylene glycol, wherein said binder forms a matrix for the insecticide on the seed.

7. A method of controlling insect pests from damaging a crop plant comprising applying to a seed an insecticidal coating according to claim 5.

9. An insecticidal coating for a seed consisting of

a. about 0.01 to 15% by weight of one or more binders selected from the group consisting of polymers and copolymers of polyvinyl acetate, methyl cellulose, polyvinyl alcohol, vinylidene chloride, acrylic, cellulose, polyvinylpyrrolidone and polysaccharide,

b. about 0.005 to 50% by weight of an insecticidally effective amount of an insecticide selected from the group consisting of terbufos, chlorpyrifos, fipronil, chlorethoxyfos, tefluthrin, carbofuran, imidacloprid, tebupirimfos, methoprene and hydroprene, and

c. about 0.01% to about 20% of a film overcoat selected from the group consisting of methyl cellulose, hydroxypropylmethylcellulose, dextrin, gums, waxes, vegetable or paraffin oils, water soluble or water dispersible polysaccharides and their derivatives, alginates, starch, cellulose, synthetic polymers, polyethylene oxide, polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetate, polyethylene glycol and polymers and copolymers and mixtures thereof,

and optionally, one or more of water, one or more fungicides or herbicides, or both, a filler selected from the group consisting of woodflours, clays, inorganic solids, activated carbon, diatomaceous earth and calcium carbonate, and mixtures thereof, a plasticizer, a bird repellent compound, a safener, a fertilizer, a biocontrol agent, a colorant, a brightener, a surface active agent ard a seed primer;

wherein the binder forms a matrix for the insecticide on the seed.

10. Seed coated with the coating of claim 9.

11. A method of controlling insect pests from damaging a crop plant comprising applying to a seed an insecticidal coating according to claim 9.

12. A method of protecting emerging seedlings of a crop plant from one or more insects comprising applying to the seeds of the crop plant an insecticidally effective amount of the coating according to claim 9.