Pesticidal compositions comprising 4,5-dihydroxyindan-1-one

Abstract

Provided are pesticidal compositions comprising 4,5-dihydroxyindan-1-one or derivatives thereof for protecting important crops against mites, fungi, and bacteria. The compositions may be manufactured by fractionating fungal extracts.

1 . A method of controlling fungal or bacterial infestation in a plant susceptible thereto, comprising applying onto the plant or in the vicinity of said plant infested with fungi or bacteria a composition comprising a compound of formula I 
       
         
           
           
               
               
           
         
         wherein R 1  and R 2  are independently selected from H, C 1-18  alkyl, and C 1-18  acyl. 
       
     
     
         2 . A method according to  claim 1 , comprising a compound of formula I 
       
         
           
           
               
               
           
         
         wherein R 1  and R 2  are independently selected from H, C 1-18  alkyl, and C 1-18  acyl, and at least one component selected from the group consisting of agriculturally acceptable carrier, diluent, emulsifier, dispersant, and an additional active ingredient selected from herbicides, insecticides, growth stimulators, and fertilizers. 
       
     
     
         3 . A method according to  claim 1 , wherein said plant comprises fruit, vegetable, or ornamental flower. 
     
     
         4 . A method of controlling bacterial infestation according to  claim 1 , comprising applying onto the plant or in the vicinity of said plant a composition comprising an extract of a fungus selected from  Meira argovae, Meira geulakonigae , and  Acaromyces ingoldii , or biologically active products derived from the extract