Can cover crops reduce leafhopper abundance in vineyards?
Kent M. Daane, Kearney Agricultural Center
Michael J. Costello, UC Cooperative Extension
California Agriculture 52(5):27-33.
The lower leafhopper density associated with cover crops may be caused by competing cover crops reducing vine vigor. Leafhoppers prefer healthy vines.
K.M. Daane is Associate Specialist, Center for Biological Control, Division of Insect Biology (Dept. ESPM), UC Berkeley, stationed at the Kearney Agricultural Center, Parlier; M.J. Costello is Farm Advisor, UC Cooperative Extension, Fresno County.
The authors thank the Mondavi Winery, the Smeds' Savage Island Farm, Kenneth Chooljian Vineyard and the Kearney Agricultural Center for use of their farms; the California Table Grape Commission, Lodi-Woodbridge Winegrape Commission, UC IPM Statewide Project, UC Sustainable Agriculture Research and Education program and the USDA National Research Initiative for providing funding; and Eric Davidian, Dean Greenwood, Ross Jones and Glenn Yokota for field and laboratory work.