Mechanical Number Covered boxes........... 1 Collars................. 2 Cards................... 3
Destructive Hand-picking............ 4 Kerosene emulsion....... 5 Whale-oil soap.......... 6 Miscible oils........... 7 Tobacco dust............ 8 Carbolic acid emulsion.. 9 Corrosive sublimate.... 10 Bordeaux mixture....... 11
Poisonous Paris green............ 12 Arsenate of lead....... 13 Hellebore.............. 14
It will be of some assistance, particularly as regards quick reference, to give the following table, which shows at a glance the method of fighting any enemy, the presence of which is known or anticipated.
While this may seem quite a formidable list, in practice many of these pests will not appear, and under ordinary circumstances the following six remedies out of those mentioned will suffice to keep them all in check, _if used in time:_ Covered boxes, hand-picking, kerosene emulsion, tobacco dust, Bordeaux mixture, arsenate of lead.
ENEMY | ATTACKING | CLASS | REMEDY --------------------|----------------------------|--------|------- Aphis (Plant-lice) | Cabbage and other plants, | b | 5,8,6 | especially under glass | | Asparagus-beetle | Asparagus | a | 13, 12 Asparagus rust | Asparagus | c | 11 Black-rot | Cabbage and the cabbage | d | 10 | group | | Borers | Squash | b | 4 Caterpillars | Cabbage group | a |12, 14, 4 Caterpillars | Tomato | a | 4 Club-root | Cabbage group | c | see text Cucumber-beetle | Cucumber and vines | a | 1, 11, 8 (Striped beetle) | | | Cucumber-wilt | Cucumber and vines | c | 11 Cucumber-blight | Cucumber, muskmelon, | c | 11 | cabbage | | Cut-worm | Cabbage, tomato, onion | a |2,4,12,13 Flea-beetle | Potato, turnip, radish | a | 11, 5 Potato-beetle | Potato and egg-plant | a |12, 13, 4 Potato-blight | Potato | c | 11 Potato-scab | Potato (tubers) | c | 10 Root-maggot | Radish, onion, cabbage, | a | 4, 3, 9 | melons | | Squash-bug | Squash, pumpkin | b |4,8,12,5 White-fly | Plants; cucumber, tomato | b | 6, 5, 8 White-grub | Plants | a | 4
However, that the home gardener may be prepared to meet any contingency, I shall take up in brief detail the plant enemies mentioned and the remedies suggested.
_Aphis:_--The small, soft green plant-lice. They seldom attack healthy growing plants in the field, but are hard to keep off under glass. If once established it will take several applications to get rid of them. Use kerosene or soap emulsion, or tobacco dust. There are also several trade-marked preparations that are good. Aphine, which may be had of any seed house, has proved very effective in my own work, and it is the pleasantest to use that I have so far found.