With a methodic system of rotation of crops, fall plowing, and a general cleaning up prior to the plowing, but little trouble with garden insects will be experienced. In many cases insect-eggs are carried over on the stalks of plants. As instances, the cabbage-louse lays eggs on old cabbage-leaves and stalks left in the garden, and it is about the same with the cucumber-beetle, leaf-louse, parsley-worm, and squash-bug. The fall plowing also mainly destroys the cutworms in winter quarters, the root-maggots, and wire-worms.

391. Spraying Garden Plants

The leaf-eating insects are mostly confined to the fruit-trees, small fruits, and shrubs. Hence in the garden the arsenical sprays (15G) are mostly used for the destruction of the Colorado potato-beetle, the cabbage flea-beetle, and the striped cucumber-beetle. The kerosene emulsion (158. Spraying for the Bark and Leaf Aphis.) is used in the garden for the leaf-lice mainly. In lessening the work of the cabbage-louse, and indeed all the aphides, the cleaning up of the garden is a great help, as the eggs live over winter attached to the old leaves and stems if left on the ground. Chinch-bugs, when not too numerous, can be headed off in the garden by spraying with kerosene emulsion applied to corn and crops they attack. Keeping the headlands, corners, and fence sides clean is also a great help.