Influence of Surrounding Plants on Densities of Pieris rapae (L.) Eggs and Larvae (Lepidoptera: Pieridae) on Collards
- 1 April 1984
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 13 (2) , 464-468
- https://doi.org/10.1093/ee/13.2.464
Abstract
In three sets of field experiments, collards, Brassica oleracea var. acephala Decandolle, were surrounded by (1) other collards; (2) broccoli, Brassica oleracea var. botrytis (L.) deC., a closely related host; (3) collards treated with a systemic insecticide to make “decoy” plants; or (4) tomatoes, Lycopersicon esculentum Mill., an unrelated and perhaps repellent plant. Population densities of Pieris rapae (L.) eggs and larvae were the same for collards surrounded by other collards and for collards surrounded by broccoli. Nor were there differences in P. rapae densities on collards surrounded by collards that had been treated with aldicarb to make them toxic. Unexpectedly, however, P. rapae eggs and larvae were significantly more abundant on collards surrounded by tomatoes than on collards surrounded by other collards.This publication has 1 reference indexed in Scilit:
- Plant Apparency and Chemical DefensePublished by Springer Nature ,1976