Pheromones and method of preventing infestation of contarinia nasturtii

Abstract

The present invention relates to pheromone mixture comprising 2,9 diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane, as a racemate or, biologically active stereoisomers thereof, as well as a method for monitoring and/or mating disruption of swede midge, Contarinia nasturtii , in Brassica vegetables, in particular Brussels sprouts, cauliflower and broccoli.

1 . The pheromone mixture comprising 2,9-diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane, as a racemate or biologically active stereoisomers thereof. 
     
     
         2 . The pheromone 2,9-diacetoxyundecane as a racemate or a biologically active stereoisomer thereof. 
     
     
         3 . The pheromone 2,10-diacetoxyundecane as a racemate or a biologically active stereoisomer thereof. 
     
     
         4 - 19 . (canceled) 
     
     
         20 . The pheromone mixture of  C. nasturtii  comprising (2S, 9S)-diacetoxyundecane, (2S, 10S)-diacetoxyundecane and (2S)-acetoxyundecane. 
     
     
         21 . The sex pheromone (2S, 9S)-diacetoxyundecane of  C. nasturtii.    
     
     
         22 . The sex pheromone (2S, 10S)-diacetoxyundecane of  C. nasturtii.    
     
     
         23 . A mixture according to  claim 1 , wherein the (2S,9S)-diacetoxyundecane, (2S, 10S)-diacetoxyundecane and (2S)-acetoxyundecane are present in a weight ratio of 1:0.5-3:0.001-0.05. 
     
     
         24 . A method for prognostication (monitoring) of  C. nasturtii , wherein one applies the sex pheromone mixture of  C. nasturtii  comprising 2,9-diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane either as racemates and/or as biologically active stereoisomers, in a trap in connection with a field or a geographical region to be monitored with regard to the presence of  C. nasturtii.    
     
     
         25 . A method for prognostication (monitoring) of  C. nasturtii  according to  claim 25 , wherein the mixture applied is (2S, 9S)-diacetoxyundecane, (2S,10S)-diacetoxyundecane and (2S)-acetoxyundecane. 
     
     
         26 . A method for controlling  C. nasturtii  by mating disruption, wherein one applies the sex pheromone mixture of  C. nasturtii  comprising 2,9-diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane, either as racemates and/or as biologically active stereoisomers, in connection to a field, to be controlled, by the spread of these compounds. 
     
     
         27 . A method for controlling  C. nasturtii  according to  claim 26 , wherein the mixture applied is (2S,9S)-diacetoxyundecane, (2S, 10S)-diacetoxyundecane and (2S)-acetoxyundecane. 
     
     
         28 . A dispenser comprising the mixture of sexual pheromone compounds 2,9-diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane, either as racemates and/or as biologically active stereoisomers for prognostication (monitoring) and/or control of  C. nasturtii.    
     
     
         29 . A dispenser according to  claim 28 , wherein the mixture is (2S,9S)-diacetoxyundecane, (2S, 10S)-diacetoxyundecane and (2S)-acetoxyundecane. 
     
     
         30 . A dispenser according to  claim 28 , whereby 2,9-diacetoxyundecane, 2,10-diacetoxyundecane and 2-acetoxyundecane are present in a weight ratio of 1:0.5-3:0.001-0.05. 
     
     
         31 . A mixture according to  claim 23 , wherein the (2S,9S)-diacetoxyundecane, (2S, 10S)-diacetoxyundecane and (2S)-acetoxyundecane are present in a weight ratio of 1:2:0.02. 
     
     
         32 . A dispenser according to  claim 30 , whereby 2,9-diacetoxyundecane, 2,10-diacetoxyundecane, and 2-acetoxyundecane are present in a weight ratio of 1:2:0.02.