Omnivorous leaf roller an important new grape pest in the San Joaquin valley
AuthorCurtis D. Lynn
Author AffiliationsCurtis D. Lynn is Farm Advisor, Agricultural Extension Service, Fresno County.
Hilgardia 23(4):16-17. DOI:10.3733/ca.v023n04p16. April 1969.
Studies indicate that the best approach to control of the omnivorous leaf roller at present is field sanitation and chemical treatment if necessary. Early French plowing and disking should forestall damage in vineyards not yet infested. Where infestation already has occurred, removing all mummified clusters from the vine along with the French plowing and disking will be necessary. A standard lead arsenate spray just prior to fruit formation looks promising in tests but further research is needed. Insecticide treatments may be needed later in the season where sanitation practices are not used, or have failed to provide sufficient control.
Also in this issue:Agriculture at Berkeley
Gill tract University of California, Berkeley
Parasites for control of grape leaf folder
Microbial insecticides for control of grape leaf folder
Newer insecticides for the control of grape insect and spider mite pests
Population densities and economic injury levels of grape leafhopper
Effects of road dust on spider mites
Ecology and integrated control of spider mites in San Joaquin vineyards
Protecting young trees from attack by the pacific flatheaded borer
Effects of timing gibberellin sprays for berry sizing on maturity of table Thompson Seedless
RH 315 a new herbicide with potential for weed control in lettuce
Seedling survival in a giant sequoia forest
Self-incompatibility in species of Lycopersicon Sect. Eriopersicon and hybrids with L. esculentum