Control of Leafhoppers in Grapes, 1985

These tests were conducted in 2 established Concord grape vineyards in North East, PA. Plots consisted of 3 vines in a row replicated 4 times in location 1 and 3 times in location 2. Vine spacing was 9 ft between rows and 8 ft within rows. One spray was applied in each test using a 6-gal. True-test...

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Bibliographic Details
Published in:Insecticide and acaricide tests 1987-01, Vol.12 (1), p.79-80
Main Authors: Saunders, Michael C., Flanagan, Patrick W.
Format: Article
Language:English
Online Access:Get full text
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Summary:These tests were conducted in 2 established Concord grape vineyards in North East, PA. Plots consisted of 3 vines in a row replicated 4 times in location 1 and 3 times in location 2. Vine spacing was 9 ft between rows and 8 ft within rows. One spray was applied in each test using a 6-gal. True-test plant sprayer operated off a high pressure hose of a Myers 61256ET2 hydraulic vineyard sprayer. Operating pressure was 100 lb/in2. Spray was applied to runoff at approximately 100 gal of spray per acre. Triton AG-98 was the spreader sticker used at the rate of 2 oz per 100 gal. Evaluations consisted of counting the number of leafhopper nymphs on each of 10 randomly selected leaves within each plot. Pretreatment levels of leafhopper was obtained by counting nymphs on 360 leaves and 250 leaves within the study areas of test location 1 and 2 respectively.
ISSN:0276-3656
DOI:10.1093/iat/12.1.79a