. 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). The female moth lays her eggs in flat masses usually on the twigs and smaller branches. In New York most of the eggs are laid by the last of June, but they do not hatch until the following spring. There is only one brood annually, about ten months being spent in the egg stage. Means of control.— The fruit-tree leaf-roller has been found to be a diff
. 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). The female moth lays her eggs in flat masses usually on the twigs and smaller branches. In New York most of the eggs are laid by the last of June, but they do not hatch until the following spring. There is only one brood annually, about ten months being spent in the egg stage. Means of control.— The fruit-tree leaf-roller has been found to be a diffi- cult insect to control. It often happens that its most destructive out- p,^ ,^ t r » j u ^ ?. , r „ Jr'iG. 121.— Leaf rolled by fruit-tree leaf-roller breaks occur in well- sprayed, weU-cared-for orchards. This is because the eggs are not injured by the lime-sulfur spray usually applied, and because the caterpillars feed in the open only for a short time after the buds have burst, at which time no arsenical is ordinarily applied to the trees. Thus this insect is able to escape the applications usually given in a spraying schedule. The method employed in controlling the leaf roller will depend entirely on the amount of infestation. This can be estimated by the amount of injury done to the crop of the preceding year or less readily by an examination of the trees for egg inasses. In cases where only a moderate infestation is in- dicated, a reason- able degree of control can be obtained by thor- ough spraying with arsenate of lead, 2I to 3 pounds in 100 gallons of water. This should be applied as soon as the leaves of Fig. 122.— Moth of fruit-tree leaf-roller the cluster buds begin to open. In cases of severe infestation, experience has shown that the pest can- not be controlled by the use of arsenical sprays alone. In such cases. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and a
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