Effect of Weedy Backgrounds on Colonization of Collards by Green Peach Aphid, Myzus persicae1 , and Its Major Predators
- 1 June 1981
- journal article
- research article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 10 (3) , 285-289
- https://doi.org/10.1093/ee/10.3.285
Abstract
Insect colonization of collards in contiguous weedy and weed-free plots was monitored in 1978 and 1979. Green peach aphids, Myzus persicae (Sulzer) preferentially invaded weed-free collards and developed higher densities thereon. Numbers of Chrysopa oculata (Say), Coccinellidae, and Syrphidae were higher in plots in which weeds were uncut, despite lower aphid densities. When weeds were trimmed to 10 cm maximum height, predators became more numerous on weedless collards. Predator response were generally inefficient, especially when overall aphid densities were low.This publication has 3 references indexed in Scilit:
- Influence of crop background on natural enemies of aphids on Brussels sproutsAnnals of Applied Biology, 1976
- Organization of a Plant‐Arthropod Association in Simple and Diverse Habitats: The Fauna of Collards (Brassica Oleracea)Ecological Monographs, 1973
- Predation by Coccinella septempunctata L. on the Cabbage Aphid, Lipaphis erysimi (Kalt.) in IndiaJournal of Animal Ecology, 1963