. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 1914 The Cornell Reading-Courses the trees should be sprayed just before the buds open with a miscible oil, I gallon in 15 gallons of water. Great care should be taken to do thorough work and to apply the liquid so as to wet each egg mass. In this way from seventy to ninety per cent of the eggs can be destroyed, but this treatment alone cannot be re
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 1914 The Cornell Reading-Courses the trees should be sprayed just before the buds open with a miscible oil, I gallon in 15 gallons of water. Great care should be taken to do thorough work and to apply the liquid so as to wet each egg mass. In this way from seventy to ninety per cent of the eggs can be destroyed, but this treatment alone cannot be relied on to control the pest. It must be supplemented by one or two thorough applications of arsenate of lead, 21 to 3 pounds in 100 gallons of water, made just after the buds have opened. That is, the trees should be sprayed as soon as the buds burst and then resprayed immediately. green fruit-worms Xylina antennata Walker, and other species Although green fruit-worms are generally distributed throughout the State they do not often become of importance as apple pests. They are primarily forest insects feeding on the foliage of poplar, soft maple, hickory, and wild cherry. Serious outbreaks have occurred at long intervals, 1877, 1896, and again in 1913. For the past two years they have been especially trouble- some in the orchards of Clinton County. The scarcit}^ of these insects over long periods of time has been at- tributed to adverse climatic conditions and to the depre- dations of parasitic enemies. In years of abundance these caterpillars are capable of causing great losses to j^ „ the apple crop, and growers shoiild be familiar with the of green fruit- nature of the injury and should understand the best worm on twig, means of preventing such loss. enlarged Although there are three closely related species of green fruit-worms commonly destructive to apples, they are all very similar in appearance and habits. The parent moths appear in the orchard in March or April and de
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