Abstract
AbstractDeraeocoris brevis piceatus Knight overwinters in the adult stage on pear and several other plants. Within pear orchards there are apparently two generations of D. brevis per year. Under laboratory conditions the developmental time from first instar to adult is about 25 days. During this period D. b. piceatus consumed nearly 400 eggs and nymphs of the pear psylla, Psylla pyricola Foerster. Most organophosphate pesticides tested were highly toxic to D. b. piceatus when applied directly to nymphs or adults but 7-day-old residues of these chemicals were only moderately toxic. Nonphosphate pesticides allowed fair to good survival of D. b. piceatus but do not fit into the total summer control program for pear pest control.
Publisher
Cambridge University Press (CUP)
Subject
Insect Science,Molecular Biology,Physiology,Ecology, Evolution, Behavior and Systematics,Structural Biology
Reference6 articles.
1. Present Status of Biological Control of the Pear Psylla in Southern Oregon1
2. New records and discussion of predators of the pear psylla, Psylla pyricola Foerster, in British Columbia;McMullen;J. ent. Soc. Br. Columb.,1967
3. Monograph of the North American species of Deraeocoris — Heteroptera Miridae;Knight;Tech. Bull. Univ. Minn. agric. Exp. Stn,1921
4. Bands on Peach Trees as Shelters for Predators of the Green Peach Aphid123
5. Field Evaluation of Pesticides for Their Suitability in an Integrated Program for Spider Mites on Pear12
Cited by
21 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献