European Red Mite Control in North Carolina Apple Orchards with Early-Season Applications of Acaricides1
Author: ROCK, G. C.
Source: Journal of Economic Entomology, Volume 62, Number 5, October 1969 , pp. 1119-1122(4)
Publisher: Entomological Society of America
Abstract:Orchard experiments were conducted during 1967-68 to determine the proper dosage, timing, and selection of acaricides in early-season treatments for control of panonychus ulmi (Koch) in apple orchards.
Petroleum oil spray was more effective in killing over- wintering eggs as the interval between oil application and egg hatch decreased. One gallon of Humble 70-second viscosity oil applied at the tight-cluster or pink stage of fruit-bud development was more effective than 2 gal- Ions applied at the dormant or green-tip stage. Humble 60- or 70-second viscosity oil, Morestan® (6-methyl-2,3- quinoxalinedithiol cyclic S,S-dithiocarbonate), TH 367-1 (2-fluorethyl 4-biphenylylacetate), and demeton + tetra- difon were the more effective acaricides when used in only 1 preblossom application.
Demeton was more effective than dimethoate as an early-season acaricide. As 1 application, demeton or di methoate were more effective when applied at the petal fall stage than at the pink-bud stage. Dimethoate ap plied at the pink-bud stage at the rate of 1 ½ pint per 100 gallons of water gave poor early-season mite control. However, when the dosage was halved and applied at the pink and petal-fall stage, commercial control through June resulted. As 2 early-season applications, demeton or dimethoate were more effective when applied at pink and petal-fall stages than at petal-fall and 1st cover.
Document Type: Research Article
Publication date: 1969-10-01
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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