Organic pest control: Two years experience in a commercial apple orchard


  • H. D. Madsen Research Station Agriculture Canada Summerland, B.C.
  • B. K. Carty Research Station Agriculture Canada Summerland, B.C.


Organic pest control, pheromone traps, <i>Typhlocyba pomaria</i>, <i>Bacillus thuriengiensis</i>, <i>Archips argyrospilus</i>, <i>Archips rosanus</i>, <i>Laspeyresia pomonilla</i>, <i>Panonychus ulmi</i>


An orchard under an organic control program was studied for the incidence of pests during 2 years. Sex pheromone traps were used to control codling moths, <i>Laspeyresia pomonilla</i> (Linnaeus), by removing males. The only pesticides used in the orchard were petroleum oil at the delayed dormant period to suppress the overwintering eggs of the European red mite, <i>Panonychus ulmi</i> (Koch); and <i>Bacillus thuriengiensis</i> to control leafrollers, <i>Archips argyrospilus</i> (Walker), and <i>Archips rosanus</i> (Linnaeus). Leaf and fruit samples were taken for all the major pests which attack apples but the only pests which required treatment were the white apple leafhopper, <i>Typhlocyba pomaria</i> McAtee in 1977 and the codling moth in 1978. The failure to control codling moth may result in the curtailment of the organic program unless supplemental controls can be found.


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