Patent EA-004531-B1 (EA)
Title: Seed treatment fungicides for control of plant diseases
Inventor: RIGGS JENIFER LYNN
IPC: A01N47/34
Filed: 1998-09-01
Abstract: 1. A method for combatting plant fungi in a plant, which comprises applying to the seeds or tubers of the plant, an effective amount of a fungicidal composition comprising a fungicidally effective amount of: a) a 2-alkoxyiminoacetamide compound of the formula: wherein R is methyl or ethyl and R<1> is hydrogen, C1-C4 alkyl or allyl; or b) an alkylene bis-dithiocarbamate complex salt of the formula: wherein R<4> and R<5> are each, independently, hydrogen or C1-C6 alkyl, Q is Zn, Fe, or Cu; and the ratio of x to y is from about 3:1 to about 100:1; and c) a thiophanate compound of the formula: wherein R<2> and R<3> are each, independently, C1-C6 alkyl. 2. A method as recited in claim 1 wherein R<1>, R<2>, and R<3> are each, independently, C1-C alkyl, and R<4> and R<5> are each, independently, hydrogen or C1-C4 alkyl. 3. A method as recited in claim 2 wherein R<1>, R<2>, and R<3> are each, independently, methyl or ethyl, and R<4> and R<5> are each, independently, hydrogen, methyl or ethyl. 4. A method as recited in claim 3 wherein Q is Zn and the ratio of x to y is from about 5:1 to about 20:1. 5. A method as recited in claim 4 wherein the ratio of x to y is from about 6:1 to about 10:1. 6. A method as recited in claim 5 wherein the 2-alkoxyiminoacetamide compound is cymoxanil; the alkylene bis-dithiocarbamate complex salt compound is mancozeb; and the thiophanate compound is thiophanate-methyl. 7. A method as recited in claim 1 wherein the plant is a potato plant. 8. A method as recited in claim 7 wherein the fungi is the Late Blight fungus, Phytophthora infestans. 9. A fungicidal composition comprising a fungicidally effective amount of: a) a 2-alkoxyiminoacetamide compound of the formula: wherein R is methyl or ethyl and R<1> hydrogen, C1-C4 alkyl or allyl; b) an alkylene bis-dithiocarbamate complex salt compound of the formula: wherein R<4> and R<5> are each, independently, hydrogen or C1-C6 alkyl, Q is Zn, Fe, or Cu; and the ratio of x to y is from about 3:1 to about 100:1. And c) a thiophanate compound of the formula: wherein R<2> and R<3> are each, independently, C1-C6 alkyl. 10. A composition as recited in claim 9 wherein R<1>, R<2>, and R<3> are each, independently, C1-C4 alkyl, and R<4> and R<5> are each, independently, hydrogen or C1-C4 alkyl. 11. A composition as recited in claim 10 wherein R<1>, R<2>, and R<3> are each, independently, methyl or ethyl, and R<4> and R<5> are each, independently, hydrogen, methyl or ethyl. 12. A composition as recited in claim 11 wherein Q is Zn and the ratio of x to y is from about 5:1 to about 20:1. 13. A composition as recited in claim 12 wherein the ratio of x to y is from about 6:1 to about 10:1. 14. A composition as recited in claim 13 wherein the 2-alkoxyiminoacetamide compound is cymoxanil, the alkylene bis-dithiocarbamate complex salt compound is mancozeb and the thiophanate compound is thiophanate-methyl. 15. A method for combatting plant fungi in a plant, which comprises applying to the seeds or tubers of the plant, an effective amount of a fungicidal composition comprising a fungicidally effective amount of: a) cymoxanil; b) cymoxanil in admixture with mancozeb or thiophanate-methyl; or c) cymoxanil in admixture with mancozeb and thiophanate-methyl. 16. A method as recited in claim 15 wherein the plant is a potato plant. 17. A method as recited in claim 16 wherein the fungi is the Late Blight fungus, Phytophthora infestans. 18. A fungicidal composition comprising cymoxanil, mancozeb and thiophanate-methyl, in an effective aggregate amount.