Experimental Evidence for Associational Resistance against the European Pine Sawfly in Mixed Tree Stands

  title={Experimental Evidence for Associational Resistance against the European Pine Sawfly in Mixed Tree Stands},
  author={Pekka Kaitaniemi and Janne Riihim{\"a}ki and Julia Koricheva and Harri Vehvil{\"a}inen},
This study examined whether the saplings of Scots pine (Pinus sylvestris) exhibit associational resistance against the European pine sawfly Neodiprion sertifer (Hymenoptera, Diprionidae) when grown in a mixture with 50% silver birch (Betula pendula). The number of sawflies on pine trees in pure and mixed stands was manipulated at two experimental sites during two years. Survival of larvae and eggs was monitored, and the numbers of presumed sawfly predators were counted. A lower proportion of… CONTINUE READING
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