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Excerpt from Spraying Apples for the Plum-Curculio It has been known for more than a hundred years that t' apple was subject to injury by the plum-curculio, but as this injury has been commonly reckoned less important than that done by the codling - moth, the matter has received, of late, comparatively little attention until within the last six or seven years. Since the dis crimination of different market grades of apples has been generally introduced - a grading based not only upon size and soundness, but also upon superficial appearance - the slight surface injuries done by the new generation of the plum-curculio, both in laying the eggs and in feeding on the fruit, have acquired a great importance. The consequence of a noticeable injury of this sort, although affecting but little, and in many cases scarcely at all, the edible quality of the apple so injured, is to reduce its selling value from N o. I grade to N o. 2, the actual profits of the crop disappearing in this process. These facts having been repeatedly brought to my knowledge by Illinois horticulturists, I undertook to work out the causes of these surface blemishes in general, and to demonstrate more accurately than has hitherto been done means of preventing them by a de struction of the curculios themselves. Indeed, the importance of this investigation has grown upon me as it has become evident that these small superficial injuries very often give entrance through the skin of the apple to bacteria and to fungus spores of various kinds, causing rots and blights of the fruit which might be largely pre vented by a timely destruction of the insects. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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9781334554193

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