RHYACIONIA BUSHNELLI (LEPIDOPTERA: TORTRICIDAE) DAMAGED TIPS WITHIN PONDEROSA PINE: DISTRIBUTION AND SAMPLING UNIVERSE
- 31 May 1982
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 114 (5) , 403-409
- https://doi.org/10.4039/ent114403-5
Abstract
Within individual trees in an 8-year-old provenance planting of ponderosa pine (Pinus ponderosa var. scopulorum Engelm.) in central Nebraska, the infestation of tips by the western pine tip moth (Rhyacionia bushnelli Busck) generally decreased with increasing tree height and varied with whorl and seed source. Trees from Eastern Plains sources were taller and had fewer infestations than trees from three other geographic regions. Sampling tips on whorls 3 through 6, 4 through 6, or 4 through 7 all give an accurate estimate of damaged tips per tree in trees less than or equal to 3.0 m high.This publication has 0 references indexed in Scilit: