Grape Berry Moth, 1984
The first larvae in the spring feed on tender stems, blossom buds, and the newly set berries. Often they feed inside large protective webbings which can involve the entire cluster. When berries have reached about 3 ... [... more]
NY State IPM |
Grape Cane Girdler, 1984
The shiny-black adults are small, 3 mm long weevils with a characteristic curved snout (Fig. 1). Except for their color they resemble the reddish-brown adults of the grape cane gallmaker, Ampeloglypter sesostris ... [... more]
NY State IPM |
Grape Flea Beetle,1985
Overwintering adults attack the swelling buds by boring into them and hollowing out the inside (Fig. 1 and Fig. 5). In contrast, the larvae and summer adults feed on the tender leaf tissues but avoid the leaf veins ... [... more]
NY State IPM |
Grape Rootworm, 1986
The larvae of GR are creamy-white with a dark brown head capsule (Fig. 4). They move from the hatching site under the bark to the soil where all further larval development will take place. Development through the 5 ... [... more]
NY State IPM |
Climbing Cutworm, 1984
FuIIy-grown larvae are 30 to 36 mm long and 6.5 mm wide (Fig. 3). Spring and fall caterpillars are dull gray, whereas those of the summer brood are dull gray brown or earth color. There are a series of black ... [... more]
NY State IPM |
Grape Leafhopper, 1984
Grapevines can tolerate populations of up to 15 hoppers per leaf with little or no economic damage. However, heavy leafhopper feeding can result in premature leaf drop, lowered sugar content, increased acid, and poor ... [... more]
NY State IPM |
Grape Tumid Gallmaker, 1989
The larval stage of the midge causes the highly visible galls on the grapevine. Upon hatching from the egg, the larvae of GTG bore into the tissue at the shoot tip (mid May to late September). The boring leaves a ... [... more]
NY State IPM |
Grape Cane Gallmaker, 1984
Except in some localized areas, the grape cane gallmaker is usually a minor problem. Since primarily vegetative nodes above the terminal fruit clusters are attacked, it is possible to prune out galls without ... [... more]
NY State IPM |
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