Cole Crop Insects

Cole Crop Insects

The cabbage aphid is greenish white. Large populations cause cupping and curling of the leaves and prevent head formation. The turnip aphid is greenish and sucks juices the undersides of leaves. This causes the leaves to yellow and curl. Diazinon sprays or dusts may be used on Broccoli(5), Cabbage(7), and Cauliflower(5). Sprays of Rotenone(1) may be used on Broccoli, Brussels Sprouts, Cabbage, and Cauliflower. Sprays of Malathion may be used on Broccoli(3), Brussels Sprouts(7), Cabbage(7), Cauliflower(7), Collards(10), Kale(10) and Turnips(10).

Cabbage Looper

The cabbage looper is a pale green worm, 1 1/2 inches long that doubles up when crawling. It injures brassica by eating leaves. Sprays of Bacillus thuringiensis may be used on Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Kale, Mustard Greens and Turnip Greens. Sprays of Rotenone(1) may be used on Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Kohlrabi, and Mustard Greens. Sprays of Sevin flowable may be used on Chinese Cabbage(14), Broccoli(3), Brussels Sprouts(3), Cabbage(3), Cauliflower(3), Kohlrabi(3), Collards(14), Kale(14), Mustard Greens(14), Rutabagas(14), and Turnips(14 for greens, 3 for roots).

Imported Cabbage Worm

The imported cabbage worm is velvety green and about 1 1/2 inches long. They begin feeding in late May to early June. The adults are light colored butterflies which swoop over the plants as they lay eggs. There are 3 to 4 overlapping generations per year. Methoxychlor may be used on Cabbage(3) and Cauliflower(7). Diazinon may be used on Broccoli(5), Cauliflower(5), Cabbage(7), Collards(10), Kale(10) and Turnip(10). Rotenone(1) may be used on Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Kale, Kohlrabi, Mustard Greens, Turnip, and Rutabaga. Sprays of Bacillus thuringiensis may be used on Broccoli, Brussels Sprouts, Cabbage, Cauliflower, Collards, Kale, Mustard Greens and Turnip Greens. Sevin dust(3) may be used on Broccoli, Brussels Sprouts, Cabbage, and Cauliflower, Sevin flowable may be used on Broccoli(3), Brussels Sprouts(3), Cabbage(3), Cauliflower(3), Kohlrabi(3), Chinese Cabbage(14), Collards(14), Kale(14), Mustard Greens(14), Rutabagas(3) and Turnip(14 days for greens, 3 days for roots).

Root Maggots

The several types of root maggots injure plants by burrowing into roots and stems. Injured plants wilt and die. There are 3 generations per year usually in late May, late June and mid-August. The first generation is usually the most damaging. Diazinon granules can be used to control root maggots on Broccoli, Cabbage, Cauliflower, and Turnips.

Thrips

Thrips are cream to brown and about 1/16 inch long. They injure plants by rasping holes in the leaves resulting in tiny brown spots which turn black. Rotenone(1) sprays control thrips on Collard, Kale, Mustard Greens, Kohlrabi, Turnips, and Rutabagas. Malathion sprays control thrips on Broccoli(3), Brussels Sprouts(7), Cauliflower(7), Cabbage(7), and Kale(7).

Cutworms

Cutworms are dull colored and variously marked. They cut off the plant at, or near, the soil surface. Very young plants are most affected. Use Diazinon granules according to label directions.

Flea Beetles

The small black or brown flea beetle feeding give leaves a shothole appearance. Sprays of Rotenone(1) control flea beetle on Collard, Kale, Mustard Greens, and Kohlrabi. Methoxychlor sprays may be used on Cabbage(3) and Cauliflower(7). Diazinon sprays may be used on Broccoli(5), Cabbage(7), Cauliflower(5), Collards(10), and Kale(10). Sevin dust(3) may be used on Broccoli, Brussels Sprouts, Cabbage, and Cauliflower.

Wireworm

Wireworms are slender, yellow to white or brown and about 1/2 to 1 1/2 inches long. They puncture and tunnel stems and roots. Use Diazinon granules according to label directions on Broccoli, Cabbage, Cauliflower, Collards, and Kale.

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