Tips On Phomopsis Management In Grapes

Phomopsis cane and leafspot appears as tiny dark spots with yellowish margins on leaf blades and veins. Spots first show three to four weeks following rain. Leaf death may occur if large numbers of spots build up.

For information from the University of California’s Statewide IPM Program on how to identify and manage phomopsis, go to http://www.ipm.ucdavis.edu/PMG/r302100411.html.