Dispersal and Winter Survival of the Pear Psylla
- 1 April 1983
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 76 (2) , 311-315
- https://doi.org/10.1093/jee/76.2.311
Abstract
Dispersal of adult Psylla pyricola Foerster was heavy in the preoverwintering and over wintering generations. Adults departed and entered pear orchards in large numbers at heights up to 4 m, the maximum height studied. Populations up to 258,000/ha were detected in leaf duff during late fall, but few remained in the spring. Tillage of the leaf duff in late fall destroyed a disproportionate number of predators, with minimal impact on over wintering P. pyricola.Keywords
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