. Bulletin. Agriculture -- Ontario. 10 Remedies : Spray with Paris green, using one pound of Paris green to every ioo gallons of water, and adding a little hard or soft soap to prevent the liquid rolling off the cabbage leaves ; hellebore dusted over the cabbage leaves in early morning. Hellebore is poisonous to insects, although harmless to man. It is more expensive than Paris green. Cabbage-Root Maggot (Phorbia brassicce) : This pest is well known to the vegetable growers of Ontario. The eggs are laid by a small fly in the soil near the root of the cabbage. In two or three days the eggs hatc
. Bulletin. Agriculture -- Ontario. 10 Remedies : Spray with Paris green, using one pound of Paris green to every ioo gallons of water, and adding a little hard or soft soap to prevent the liquid rolling off the cabbage leaves ; hellebore dusted over the cabbage leaves in early morning. Hellebore is poisonous to insects, although harmless to man. It is more expensive than Paris green. Cabbage-Root Maggot (Phorbia brassicce) : This pest is well known to the vegetable growers of Ontario. The eggs are laid by a small fly in the soil near the root of the cabbage. In two or three days the eggs hatch, and the small white maggots find their way to the root of the cab- bage or cauliflower. The young maggot tunnels into the root and the affected plant soon withers and dies. The winter is passed, for the most part, in the pupal condition. Remedies : Carbolic acid emulsion (diluted about thirty times with water) using one-half teacupful to each plant and pouring it about the root with a sprinkler the day after setting and repeated every ten days, until the end of May; tobacco dust placed around the stem of the plant; pads of tarred paper about 2 and z\ inches in diameter, placed about the plants shortly after setting time ; destroy diseased The Diamond-back Moth : a, caterpillar ; d, pupa ; e, cocoon ; /, moth—enlarged. Diamond Back Moth (Plutella macidipennis) : Small green-colored caterpillars, about three-eighths of an inch in length. When disturbed they wriggle about and fall to the ground. Their presence is easily detected by the numerous small holes eaten through the leaf. The larval stage lasts about a month, and then they spin small cocoons on the under side of the leaf. About two weeks later the adult moth emerges. There are, at least, two broods in a season. Remedies : Dust or spray the infected plants with the usual Paris green mixtures or solutions, as for Cabbage-worm. Induce vigorous growth by light dressings of nitrate of Please note that these
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