Spider Populations in New Jersey Apple Orchards1
- 1 October 1960
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 53 (5) , 810-814
- https://doi.org/10.1093/jee/53.5.810
Abstract
Mean numbers of spiders in three unsprayed New Jersey apple orchards were higher than in seven sprayed orchards during 1957. “Hunting” spiders appeared to be more strongly affected by sprays than web-builders. Spiders formed a lower proportion of total predatory arthropods (excluding mites) in sprayed orchards than in unsprayed. A seasonal trend was noted in population density similar to that observed elsewhere. Eight species comprised about 87% of the individuals from July to October in unsprayed orchards. These species made up only 60% of the individuals in sprayed orchards, the difference being mainly owing to the relative abundance of the erigonid, Grammonota inornata Emerton. The 34 species found in the study are listed with annotations.This publication has 1 reference indexed in Scilit:
- Arthropod Fauna Found During the First-Season Trial of a Selective Spray Schedule in a New Jersey Apple Orchard1Journal of Economic Entomology, 1959