Open AccessInsecticide Evaluation for Control of the Foliar form of Grape Phylloxera, 1990
Author(s) -
Murdick McLeod,
R. N. Williams,
D. S. Fickle
Publication year - 1991
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/16.1.37a
Subject(s) - sprayer , horticulture , randomized block design , vine , mathematics , botany , biology , agronomy
The test consisted of 7 treatments applied on 11 Jun and 18 Jun, corresponding to recommended control at bloom and 10-14 d post bloom. Plots at Wooster, OH consisted of 2 grape vines, with 4 replications/treatment in a randomized complete block design. Vine spacing was 2.7 m between rows and 2.4 m within the row. Treatments were applied as foliar sprays using a hand held CO2 sprayer operated at 3.2 kg/cm2 equipped with a 9505-E-TeeJet nozzle. Sprays were applied at the rate of 1870 liter/ha. The spreader sticker Triton-B was added to each treatment at the rate of 30 ml/95 liters of water. The total number of galls on 10 apical leaves from 10 randomly selected shoots/plot were recorded on 13 Jul. Data were normalized using the complementary log log transformation of the mean values.
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