Treatment

Thorough spraying with "Black Leaf 40" tobacco extract, three-fourths of a pint in one hundred gallons water, adding four or five pounds of soap.

Cabbage-Looper (Antographa Brassicae)

'A pale green looping caterpillar, striped with lighter lines, over 1 inch in length when mature. Especially destructive to late cauliflower.

Treatment

Very difficult to poison. Some growers dust the plants with pure paris green, using a blower.

Cabbage Maggot (Pegomya Brassicsae)

A small white maggot, the larva of a small fly, eating into the crown and roots of young cabbage, cauliflower, radish, and turnip plants.

Treatment

Carbolic acid emulsion diluted with thirty parts of water, applied the day following the transplanting of the cabbage plants, and repeated once a week for several applications. Remove a little earth from about the plants, and spray on the emulsion forcibly. Better results may be secured by using tightly fitting cards cut from tarred paper. In seed-beds, protect the plants by surrounding the bed with boards 1 foot wide placed on edge, across which a tight cover of cheese cloth is stretched.

Cabbage-Worm Or Cabbage-Butterfly (Pontia Rapae)

The green caterpillars hatch from eggs laid by the common white butterfly. There are several broods every season.

Treatment

If plants are not heading, spray with kerosene emulsion or with paris green to which the sticker has been added. If heading, apply hellebore.

Cutworms. - See Corn.

Diamond-Back Moth (Plutella Maculipennis)

A pale green, active caterpillar, about 1/3 inch in length when mature, feeds on the under sides of the leaves. Pupates in an open-work silken cocoon on the leaves. Destructive to late cauliflower.

Treatment

Same as for cabbage looper.

Flea-Beetles

See Potato.

Harlequin Cabbage-Bug (Murgantia Histrionica)

Bug about 1/2 inch long, gaudily colored with orange dots and stripes over a blue-black ground, feeding upon cabbage; two to six broods.

Treatment

Hand-picking. Place blocks about the patch, and the bugs will collect under them. In the fall make small piles of the rubbish in the patch, and burn them at the approach of winter. Practise clean culture. Destroy all cabbage stalks and other cruciferous plants in fall. Early in the spring, plant a trap crop of mustard, radish, rape, or kale. When the overwintering bugs congregate on these plants, destroy them with pure kerosene or by hand.

Cactus. Mealy-Bugs

See Citrus.

Cactus. Chelinidea Vittigera

A yellowish bug resembling the common squash stink bug (Anasa tristis), feeding on the joints of opuntia, causing small circular discolored areas and destruction of the plants.

Treatment

Destroy young with gasolene torch. In winter, burn trash in which adults are hibernating.