Author: Shirley Watson Foster
Publisher: Forgotten Books
ISBN: 9781390442212
Category : Science
Languages : en
Pages : 68
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Excerpt from The Life History and Habits of the Pear Thrips in California Mr. Dudley Moulton, an agent of this bureau, who, as Santa Clara County entomologist, had previously had experience with the insect, was placed in immediate charge of the work, in which position the continued until September, 1909. During his period of service Mr. Moulton was assisted in the Santa Clara Valley at one time or another by Messrs. C. T. Paine, S. W. Foster, and P. R. Jones. 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.
Author: Shirley Watson Foster
Publisher:
ISBN:
Category : Fruit
Languages : en
Pages : 66
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Author: United States. Department of Agriculture
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Shirley Watson Foster
Publisher:
ISBN:
Category : Fruit
Languages : en
Pages : 52
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Author: Stanley Fuller Bailey
Publisher: Forgotten Books
ISBN: 9780364975855
Category : Business & Economics
Languages : en
Pages : 58
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Excerpt from The Pear Thrips in California Garden Produce (london, says on pp. 87 - 90, on the thrip on peach and nectarine, that as soon as the least verdure appears, both larvae and adults are found, the latter becoming nearly black. They commence feeding on the edges of the young leaves as soon as they put forth in the spring, and also prey on the bloom before it expands. 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.
Author: Leslie Malcolm Smith
Publisher: Forgotten Books
ISBN: 9780266864110
Category :
Languages : en
Pages : 20
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Excerpt from The Emergence of Pear Thrips in the Healdsburg Area of California in 1932 The total emergence occurred over a period of 38 days, from February 19 until March 27. The peak of the emergence (empirical mode) and the arithmetical mean occurred on March 9. The normal curve of emergence was distorted by the influence of temperature. 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.
Author: Dudley Moulton
Publisher: Forgotten Books
ISBN: 9781333788797
Category : Science
Languages : en
Pages : 20
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Excerpt from The Pear Thrips (Euthrips Pyri) We believe that if the ground be thoroughly plowed and cultivated during November, 'december, and January, or before the insects leave the ground, which they begin to do by the first of February, many of these young thrips would be killed or injured or so disturbed that but few would ever reach maturity. Our present manner of cultivation is well adapted to give the thrips a long, undisturbed period of rest. During the late spring and early 'summer, when thrips are in the ground, we give the soil nothing but light cultivation, and as the insects are still in an active larval stage they seek another place of hiding, if disturbed. After this no cultivation is usually done until the last of February or March of the following year, by which time the insects have left the ground. While the plowing and cultivating method of control has not been thoroughly tried, we believe it gives more promise than any other yet suggested. 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.
Author: S. W. Foster
Publisher:
ISBN: 9781332309207
Category : Business & Economics
Languages : en
Pages : 32
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Excerpt from How to Control the Pear Thrips By the time the fruit buds have swollen sufficiently to separate the bud scales slightly at the tip the adults force their way within, feeding upon the tenderest portions inside the buds. When the thrips are present in sufficient numbers the buds are completely destroyed and the trees fail entirely to bloom. Eggs. - As soon as the first leaf surfaces or fruit stems are exposed egg laying usually begins, depending somewhat on the variety of fruit attacked. The first eggs are deposited the last days of February and oviposition continues till near the middle of April, being at its maximum, however, from the 10th of March to the 1st of April. Most of the eggs (fig. 3) are deposited just under the epidermis in the fruit stems, young fruit, and leaf stems. The eggs require from five to seventeen days to hatch, the average time being about eight days. Larvae. - By the time the trees are breaking into full bloom the adults have done most of the damage caused by their feeding, and oviposition is at its height. Many of the earlier appearing adults are dying off and larvae (fig. 4) are beginning to appear in numbers. The very first larvae can usually be found about March 20, and are in maximum numbers on the trees, feeding on the small fruit and young foliage, from the first to middle of April. Reaching their full development, the larvae drop from the trees, of their accord or with falling calyces, or are blown by wind or knocked off by rain. 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."
Author: Stanley Fuller Bailey
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 64
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