OCR Text |
Show SPRAY FOR INSECT CONTROL Combination Treatment Can Be Made for the San Jose Scale and Apple Aphids. (Prepared by the United States Department Depart-ment of Agriculture.) Orcliardists who have the San Jose and other scale insects to contend with should arrange to spray their trees with proper insecticides before the foliage fo-liage puts out in the spring. The prospects of continued remunerative prices for fruits should be an incentive incen-tive to give orchards all needed care to maintain them in productive and vigorous condition. Commercial lime sulphur concentrate is the principal insecticide used for San Jose scale spraying. It is usually Gasoline Power Pump Spraying Outfit. sold In a density of 33 degrees on the Baume scale, and when of this strength should be used at the rate of one gallon gal-lon to from seven to nine gallons of water. In spraying for San Jose scale very thorough work is essential, since only the Insects actually hit with the spray are destroyed. The spray pump used should .develop good pressure to insure thorough work. During recent years many apple growers have adopted the so-called "delayed dormant" method of spraying. spray-ing. Briefly, this consists in deferring the San Jose scale treatment until the tips of the buds of the apple are showing show-ing green. By adding to the lime-6ul-phur solution 40 per cent nicotine sulphate sul-phate at the rate of 1 part to 800 or 000 parts of water an effective combination com-bination treatment can be made for the San Jose scale and apple aphids which congregate on the opening buds. Necessary insecticides should be obtained ob-tained or contracted for, so that nothing noth-ing will interfere with carrying out an effective spray program. |