Synergistic fungicidal composition comprising a compound analogous to strobilurin

Abstract

A synergistic fungicidal composition comprising a compound A having the formula and a compound B which is a dicarboximide derivative such as iprodione, procymidone or vinchlozolin, and a method for controlling or preventing the development of phytopathogenic fungi employing said composition.

What is claimed is:  
     
         1 . A fungicidal composition comprising a synergistic fungicidally effective amount of a compound A which is (i) methyl (E)-methoxyimino[α-(o-tolyloxy)-o-tolyl]acetate or (ii) N-methyl-(E)-methoxyimino[2-(2,5-dimethylphenoxymethyl)phenyl]acetamide, and a compound B which is iprodione, the A/B ratio by weight being between 0.02 and 5.  
     
     
         2 . A fungicidal composition according to  claim 1 , wherein compound A is methyl (E)-methoxyimino[α-(o-tolyloxy)-o-tolyl]acetate.  
     
     
         3 . A fungicidal composition according to  claim 1 , wherein compound A is N-methyl-(E)-methoxyimino[2-(2,5-dimethylphenoxymethyl)phenyl]acetamide.  
     
     
         4 . A fungicidal composition according to  claim 1 , wherein the A/B ratio by weight is between 0.0625 and 1.33.  
     
     
         5 . A fungicidal composition according to  claim 1 , wherein the A/B ratio by weight is between 0.05 and 5.  
     
     
         6 . A fungicidal composition according to  claim 1 , wherein the A/B ratio by weight is between 0.17 and 1.33.  
     
     
         7 . A fungicidal composition according to  claim 1 , wherein the A/B ratio by weight is between 0.02 and 2.  
     
     
         8 . A fungicidal composition according to  claim 1 , wherein the A/B ratio by weight is between 0.0625 and 0.25.  
     
     
         9 . A fungicidal composition according to  claim 1 , further comprising at least one member selected from the group consisting of an agriculturally acceptable solid or liquid vehicle and an agriculturally acceptable surface-active agent.  
     
     
         10 . A fungicidal composition according to  claim 9 , comprising from 0.05% to 95% by weight of compounds A and B.  
     
     
         11 . A process for the curative or preventative control of phytopathogenic fungi in plants, said process comprising applying to plants or to the locus in which they grow a synergistic fungicidally effective non-phytotoxic amount of a compound A which is (i) methyl (E)-methoxyimino[α-(o-tolyloxy)-o-tolyl]acetate or (ii) N-methyl-(E)-methoxyimino[2-(2,5-dimethylphenoxymethyl)phenyl]acetamide, and a compound B which is iprodione, the A/B ratio by weight being between 0.02 and 5.  
     
     
         12 . A process according to  claim 11 , wherein compound A is methyl (E)-methoxyimino[α-(o-tolyloxy)-o-tolyl]acetate.  
     
     
         13 . A process according to  claim 11 , wherein compound A is N-methyl-(E)-methoxyimino[2-(2,5-dimethylphenoxymethyl)phenyl]acetamide.  
     
     
         14 . A process according to  claim 11 , wherein the A/B ratio by weight is between 0.0625 and 1.33.  
     
     
         15 . A process according to  claim 11 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to crops or lawns to control fungi which are phytopathogenic towards crops or lawns, respectively.  
     
     
         16 . A process according to  claim 15 , wherein compound A is methyl-(E)-methoxyimino[α-(o-tolyloxy)-o-tolyl]acetate.  
     
     
         17 . A process according to  claim 15 , wherein compound A is N-methyl-(E)-methoxyimino[2-(2,5-dimethylphenoxymethyl)phenyl]acetamide.  
     
     
         18 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to the aerial parts of the plants.  
     
     
         19 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to crops and wherein the A/B ratio by weight is between 0.05 and 5.  
     
     
         20 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to crops and wherein the A/B ratio by weight is between 0.17 and 1.33.  
     
     
         21 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to crops at a dose rate of between 150 and 1500 g/ha.  
     
     
         22 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to crops at a dose rate of between 400 and 1000 g/ha.  
     
     
         23 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to lawns and wherein the A/B ratio by weight is between 0.02 and 2.  
     
     
         24 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to lawns and wherein the A/B ratio by weight is between 0.0625 and 0.25.  
     
     
         25 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to lawns at a dose rate of between 1100 and 7000 g/ha.  
     
     
         26 . A process according to  claim 15 , wherein the synergistic fungicidally effective non-phytotoxic amount of A and B is applied to lawns at a dose rate of between 2250 and 5000 g/ha.