Use of phenylpyrazolin-3-carboxylates for improving plant yield

Abstract

Compounds (A) can be used for increasing the yield of useful plants or crop plants with respect to their harvested plant organs, wherein the Compound (A) is selected from compounds of the formula (I) or salts thereof, in which (R 1 ) n is n radicals R 1 where the R 1 are identical or different and are each halogen or (C 1 -C 4 )-haloalkyl, n is an integer from 1 to 3, R 2 is hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 4 )-alkoxy-(C 1 -C 4 )-alkyl, (C 3 -C 6 )-cycloalkyl, tri-(C 1 -C 4 )-alkyl-silyl or tri-(C 1 -C 4 )-alkyl-silylmethyl, R 3 is hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 6 )-haloalkyl, (C 2 -C 6 )-alkenyl, (C 2 -C 6 )-alkynyl or (C 3 -C 6 )-cycloalkyl, and R 4 is hydrogen or (C 1 -C 12 )-alkyl, preferably mefepyr-diethyl (Compound (A1)]

1 . A method for increasing the yield of useful plants or crop plants with respect to their harvested plant organs which plants are growing in their normal habitat, which comprises applying a Compound (A) in an effective, non-phytotoxic amount to the crop plants, the seeds from which they grow, or to the locus in which they grow in their normal habitat, wherein Compound (A) is selected from compounds of the formula (I) or salts thereof, 
       
         
           
           
               
               
           
         
       
       in which
 (R 1 ) n  is n radicals R 1  where the R 1  are identical or different and are each halogen or (C 1 -C 4 )-haloalkyl, 
 n is an integer from 1 to 3, 
 R 2  is hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 4 )-alkoxy-(C 1 -C 4 )-alkyl, (C 3 -C 6 )-cycloalkyl, or tri-(C 1 -C 4 )-alkyl-silyl or tri-(C 1 -C 4 )-alkyl-silylmethyl, 
 R 3  is hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 6 )-haloalkyl, (C 2 -C 6 )-alkenyl, (C 2 -C 6 )-alkynyl or (C 3 -C 6 )-cycloalkyl, and 
 R 4  is hydrogen or (C 1 -C 12 )-alkyl. 
 
     
     
         2 . The method according to  claim 1 , wherein
 (R 1 ) n  is n radicals R 1  where the R 1  are identical or different and are each F, Cl, Br or CF 3 .   n is 2 or 3.   R 2  is hydrogen or (C 1 -C 4 )-alkyl.   R 3  is hydrogen, (C 1 -C 4 )-alkyl, (C 2 -C 4 )-alkenyl or (C 2 -C 4 )-alkynyl.   R 4  is hydrogen or (C 1 -C 8 )-alkyl.   
     
     
         3 . The method according to  claim 1 , wherein compound (A) is mefenpyr-diethyl. 
     
     
         4 . The method according to  claim 1 , wherein Compound (A) is applied in combination with one or more compounds selected from the group of fungicides, insecticides and plant growth regulators. 
     
     
         5 . The method according to  claim 1 , comprising increasing the grain yield of crop plants selected from group consisting of cereals, canola, soybean and cotton crops. 
     
     
         6 . The method according to  claim 1 , comprising increasing the grain yield of crop plants selected from group consisting of wheat, barley, rye or triticale plants. The method according to  claim 1 , comprising increasing the gluten content of seed kernels of crop plants selected from group consisting of cereals, canola and soybean crops. 
     
     
         8 . The method according to  claim 1 , comprising increasing the gluten content of seed kernels of crop plants selected from group consisting of cereal crops. 
     
     
         9 . The method according to  claim 1 , comprising increasing the protein content of seed kernels of crop plants selected from group consisting of cereals, canola and soybean crops. 
     
     
         10 . The method according to  claim 1 , comprising increasing the yield of the amount by weight of beets of beet plants. 
     
     
         11 . The method according to  claim 1 , comprising increasing the sugar content of sugar plants. 
     
     
         12 . The method according to  claim 1 , comprising increasing the germination and emergence of cereal crops. 
     
     
         13 . The method according to  claim 1 , comprising increasing the biomass yield of maize plants growing in the absence of extraordinary environmental conditions. 
     
     
         14 . The method according to  claim 1 , comprising increasing the biomass yield of sugar plants. 
     
     
         15 . The method according to  claim 1 , wherein a Compound (A) is applied in combination with
 (i) fluoxastrobin and prothioconazole,   (ii) pyraclostrobin and metconazole,   (iii) trifloxystrobin and propiconazole,   (iv) trifloxystrobin and prothioconazole,   (v) prothioconazole and tebuconazole,   (vi) bixafen and prothioconazole,   (vii) bixafen and tebuconazole, or   (viii) bixafen and trifloxystrobin.   
     
     
         16 . The method according to  claim 1 , wherein 0.5 to 100 g of Compound (A) per hectare of soil surface are applied.