Grape Pest Management Guidelines
UC agricultural management guidelines for control of grape pests. Relative Toxicities of Insecticides and Miticides Used in Grapes to Natural Enemies and Honey Bees (10/08) Grape Weed Photo Gallery, with Common and Scientific Names of Weeds ... [... more]
University of California IPM |
GROWING SEASON
Although orange tortrix is found in other areas it is generally considered a pest of grapes in the coastal areas and valleys where there is a marine influence for part of the day. At rest the orange tortrix adult is bell shaped and about 0.5 inch ... [... more]
University of California IPM |
FIRST GENERATION
UC Management Guidelines for Omnivorous Leafroller on Grape. The adult omnivorous leafroller is bell-shaped with blackish gray snoutlike mouthparts that protrude forward from the head. Forewings are dark rusty brown with the tip being tan in ... [... more]
University of California IPM |
UC IPM: Grape Weed Photo Gallery with Common and ...
UC IPM: Grape Weed Photo Gallery with Common and Scientific Names. More about weeds in grapes: Susceptibility to herbicides Weed management in organic vineyards Hordeum murinum Hypochaeris radicata Verbascum spp. Polygonum lapathofolium Epilobium ... [... more]
University of California IPM |
Sharpshooters
Sharpshooters are in the same insect family as leafhoppers (Cicadellidae). The blue-green sharpshooter has green to bright blue wings, head, and thorax, and yellow legs and abdomen, which are visible on the underside. It is about 0.4 inches long. ... [... more]
University of California IPM |
Western Grapeleaf Skeletonizer
UC Management Guidelines for Western Grapeleaf Skeletonizer on Grape. The metallic bluish or greenish black western grapeleaf skeletonizer moths fly during the day. Body length is about 0.6 inch and the wing span is 1 to 1.3 inches. There are ... [... more]
University of California IPM |
Eutypa Dieback
Eutypa dieback delays shoot emergence in spring, and causes shunted shoots and leaves that are chlorotic, tattered, and cupped. Symptoms in the wood are characterized by darkened cankers that develop in the vascular tissue. The cankers are often ... [... more]
University of California IPM |
Pathogen: Agrobacterium vitis
Gall formation is the typical symptom of this disease. Galls may be produced on canes, trunks, roots, and cordons and may grow to several inches in diameter. Internally galls are soft and have the appearance of disorganized tissue. Agrobacterium ... [... more]
University of California IPM |
Phomopsis Cane and Leafspot
UC Management Guidelines for Phomopsis Cane and Leafspot on Grape. Phomopsis cane and leafspot appears as tiny dark spots with yellowish margins on leaf blades and veins. Spots first show 3 to 4 weeks following rain. Leaf death may occur if large ... [... more]
University of California IPM |
Western grape leafhopper: Erythroneura elegantula
The grape leafhopper is a pest of grapes north of the Tehachapi Mountains, especially in the San Joaquin, Sacramento, and North Coast valleys. It is also a problem in warmer, interior Central Coastal valleys. The variegated leafhopper is the ... [... more]
University of California IPM |
Scientific name: Melalgus (=Polycaon) confertus
UC Management Guidelines for Branch and Twig Borer on Grape. The branch and twig borer, also known as the grape cane borer, occurs throughout California. Adult borers are dark brown beetles, cylindrical in shape with a pronotum that is wider near ... [... more]
University of California IPM |
Summer Bunch Rot (Sour Rot)
UC Management Guidelines for Summer Bunch Rot (Sour Rot) on Grape. As berries ripen and sugar content exceeds 8%, injured fruit become increasingly susceptible to invasion by a wide variety of naturally occurring fungi. Invasion occurs at the ... [... more]
University of California IPM |
