Impact of insecticide-manipulated defoliation by Japanese beetle (Popillia japonica) on grapevines from vineyard establishment through production

BACKGROUND: Japanese beetle (JB), Popillia japonica Newman, is a severe pest of grapes in the southeastern USA where viticulture is a growing industry. This study evaluated the impact of foliar injury from JB field populations on growth, fruit ripening, berry composition and yield of young vines of...

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Bibliographic Details
Published in:Pest management science 2010-05, Vol.66 (5), p.565-571
Main Authors: Hammons, Derrick L, Kaan Kurtural, S, Potter, Daniel A
Format: Article
Language:English
Subjects:
Animals
application timing
Biological and medical sciences
carbaryl
Citrus fruits
Coleoptera - physiology
Control
crop yield
Crops, Agricultural
Cultivars
defoliation
field experimentation
Fruit - chemistry
Fruit - growth & development
fruit composition
Fundamental and applied biological sciences. Psychology
genetic resistance
grapes
grapevine
Insect control
insect pests
Insecticides
Insects
Japanese beetle
leaves
pest resistance
Phytopathology. Animal pests. Plant and forest protection
plant growth
Plant Leaves - growth & development
plant pests
Popillia japonica
Protozoa. Invertebrates
ripening
species differences
Vitaceae
Vitis
Vitis - chemistry
Vitis - growth & development
Wine
Wineries & vineyards
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Summary:BACKGROUND: Japanese beetle (JB), Popillia japonica Newman, is a severe pest of grapes in the southeastern USA where viticulture is a growing industry. This study evaluated the impact of foliar injury from JB field populations on growth, fruit ripening, berry composition and yield of young vines of six cultivars from vineyard establishment through the first year of production. Three spray regimes, carbaryl applied every 7 or 14 days, or no insecticide, were used to manipulate levels of defoliation by JB.RESULTS: Cultivars varied in susceptibility and response to defoliation by JB. Some (e.g. Norton) showed reduced vine growth and delayed post-veraison increase in total soluble sugars and pH, as well as reduced cluster number and weight, berries per cluster and yield. Others (e.g. Concord) showed little or no measurable impact from JB. Notably, the biweekly spray regime was as effective as weekly sprays in mitigating the impacts of defoliation.CONCLUSION: Foliar loss from JB feeding can set back establishment and productivity of young grapevines. Nevertheless, many growers can reduce spray frequency without compromising the benefits of JB management. Even susceptible cultivars can tolerate low to moderate (
ISSN:1526-498X
1526-4998
1526-4998
DOI:10.1002/ps.1908