To optimize mass trapping of Orthotomicus erosus and Pityogenes calcaratus (Col., Scolytidae) in Pinus halepensis and P. brutia, some stand and soil characters of thinned pine plantations, time of thinning as related to bark beetle outbreak and various characters of trees susceptible to scolytid attack were investigated. Inspection of injury by 0. erosus and P. calcaratus showed that the percentage of dead trees decreased with increasing DBH. The average mortality as related to soil type was markedly higher on terra rossa as compared with rendzina.
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