Fungicidal active compound combinations

Abstract

Safeners for herbicides are suitable for increasing the microbicidal activity of fungicides.

1 . A method of increasing the microbiocidal activity of a fungicide comprising treating a seed or a plant with the fungicide and a safener, wherein the safener is mefenpyr-diethyl and wherein the fungicide is fluoxastrobin, trifloxystrobin, or spiroxamine, wherein the mefenpyr and the fungicide are applied to the seed or plant in synergistic amounts, wherein the weight ratio of mefenpyr to fungicide is from 50:1 to 1:50. 
     
     
         2 . The method according to  claim 1  wherein the seed or the plant is treated with a composition comprising the fungicide and the safener. 
     
     
         3 . The method according to  claim 1  wherein the seed is treated with the fungicide and the safener. 
     
     
         4 . The method according to  claim 1  wherein the plant is treated with the fungicide and the safener. 
     
     
         5 . The method according to  claim 1  wherein the seed is in contact with the fungicide and the safener. 
     
     
         6 . The method according to  claim 1  wherein the plant is in contact with the fungicide and the safener. 
     
     
         7 . The method according to  claim 1  wherein the plant is a transgenic plant. 
     
     
         8 . The method according to  claim 1 , wherein the weight ratio of mefenpyr-diethyl to the fungicide 10:1 to 1:20. 
     
     
         9 . The method according to  claim 1 , wherein the fungicide is fluoxastrobin. 
     
     
         10 . The method according to  claim 1 , wherein the fungicide is trifloxystrobin. 
     
     
         11 . The method according to  claim 1 , wherein the fungicide is spiroxamine. 
     
     
         12 . A method of controlling phytopathogenic fungi comprising treating a seed or a plant with mefenpyr-diethyl and a fungicide selected from fluoxastrobin, trifloxystrobin, or spiroxamine, wherein the mefenpyr and the fungicide are applied to the seed or plant in a weight ratio from 50:1 to 1:50. 
     
     
         13 . The method according to  claim 12 , wherein the fungi is plasmodiophoromycetes, oomycetes, chytridiomycetes, zygomycetes, ascomycetes, basidiomycetes, or deuteromycetes. 
     
     
         14 . The method according to  claim 12 , wherein the fungi is  Erysiphe graminis, Pyrenophora teres , or  Leptosphaeria nodorum.    
     
     
         15 . The method according to  claim 12 , wherein the mefenpyr-diethyl and the fungicide are applied to the seed or plant simultaneously. 
     
     
         16 . The method according to  claim 12 , wherein the mefenpyr-diethyl and the fungicide are applied to the seed or plant in succession. 
     
     
         17 . The method according to  claim 12 , wherein a wheat plant is treated. 
     
     
         18 . The method according to  claim 12 , wherein the fungicide is fluoxastrobin. 
     
     
         19 . The method according to  claim 12 , wherein the fungicide is trifloxystrobin. 
     
     
         20 . The method according to  claim 12 , wherein the fungicide is spiroxamine.