OCR Text |
Show CABBAGE APHIS. " Prof. E. G. Titus. L There have been a great many .corii;? plaints this year about Injury by the cabbage aphis and requests for information in-formation as to its treatment. The cabbage aphis is a sucking insect in-sect and our work against them must take some form of prevention or else the use of an insecticide that will kill by contact. Among these latter arc tobacco solutions, kerosene emulsion and lime-sulfur. This latter would be dangerous to the plant. Spraying the aphis with a first-class tobacco sheep dips at the rate of one part sheep dip to seventy-five of water wat-er will effectually handle the insect. You should be very careful in spraying to reach all parts of the outside out-side of the leaves. Where the cabbage cab-bage has entirely headed out and the hoards arc quite solid it would be well to break off the outer leaves and burn them, since it is upon these leaves that the largest accumulations of aphids arc -present. If it is impossible to get hold of a good tobacco sheep dip, kerosene emulsion may be used and it will work as effectively. The sheep dip is so much more easily handled and can be prepared by simply mixing it with water so that its use is preferable where it can be obtained. |