. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. APPLE PESTS 525. Fig. 1. The Fruit Tree Leaf Syneta : Pupa and adult. (Original) are practically no published notes on its habits and life history. The adults suddenly begin to appear in the spring at the time when the apple blossoms are opening and are very abund- ant for a few weeks, when they suddenly begin to disappear and in a few days can o
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. APPLE PESTS 525. Fig. 1. The Fruit Tree Leaf Syneta : Pupa and adult. (Original) are practically no published notes on its habits and life history. The adults suddenly begin to appear in the spring at the time when the apple blossoms are opening and are very abund- ant for a few weeks, when they suddenly begin to disappear and in a few days can only be found in scattering numbers. We have been unable to locate the eggs but suppose they are deposited in the ground upon roots of some kind. During 1912 larvae dug from the ground beneath apple trees formed into pupae and later changed to the adult stage. At that time it was impossible to tell whether the larvae were feeding upon the roots of apple or upon the roots of some grass or weed as the roots of all three were more or less intermingled. A number of lar- vae were found at a depth of fourteen inches below the surface of the ground. The only injury which we are acquaint- ed with is that done by the adults and at times this is quite serious. When the blossoms are opening in the spring, the adults can be found feeding on the petals and one would suppose that the fruit would suffer as a result, but appar- ently the principal parts of the flower are left uninjured. Later in the season the leaves of and prunes are the prin- cipal parts eaten, and oftentimes trees will have nearly every leaf with from one to several holes eaten out. The worst and most serious injury is done to young grafts, especially where whole orchards are being grafted over. These grafts where the leaves are continually eaten away for several years are killed, and consequently the tree itself is lost. Remedies Such remedies as have been tried are more or less unsatisfactory. Arsenate of lead in o
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