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Author: William Allen Orton Publisher: Forgotten Books ISBN: 9780260434517 Category : Business & Economics Languages : en Pages : 20
Book Description
Excerpt from Potato Diseases in San Joaquin County, California The diseased plants are easily pulled up; the roots are partly dead and brittle. The wilt fungus frequently appears on them as a white or pink mold, and when the underground portion of the stem is cut across a pronounced brown discoloration is visible. This brown stain is also found in the branches leading to the tubers, and a thin slice across the stem end of the tuber will often reveal its presence there as well. Examination of thin sections of these browned stems under the microscope shows the fungus to be abundant in the water-carrying vessels of both underground stems and roots; where it appears as delicate, colorless threads, bearing tiny elliptical spores. The yield from diseased hills is greatly diminished, particularly if the attack begins early in the Season. 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: William Allen Orton Publisher: Forgotten Books ISBN: 9780260434517 Category : Business & Economics Languages : en Pages : 20
Book Description
Excerpt from Potato Diseases in San Joaquin County, California The diseased plants are easily pulled up; the roots are partly dead and brittle. The wilt fungus frequently appears on them as a white or pink mold, and when the underground portion of the stem is cut across a pronounced brown discoloration is visible. This brown stain is also found in the branches leading to the tubers, and a thin slice across the stem end of the tuber will often reveal its presence there as well. Examination of thin sections of these browned stems under the microscope shows the fungus to be abundant in the water-carrying vessels of both underground stems and roots; where it appears as delicate, colorless threads, bearing tiny elliptical spores. The yield from diseased hills is greatly diminished, particularly if the attack begins early in the Season. 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: W. a. (William Allen) 1877-1930 Orton Publisher: Wentworth Press ISBN: 9781373573896 Category : History Languages : en Pages : 18
Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Donald Rockwell Porter Publisher: Forgotten Books ISBN: 9780365638971 Category : Gardening Languages : en Pages : 36
Book Description
Excerpt from Relation of Virus Diseases to Potato Production in California Unless otherwise stated, all work reported herein has been conducted with the variety White Rose, sometimes locally known as Wisconsin Pride. 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: Frederick Bravender Publisher: Forgotten Books ISBN: 9780484512251 Category : Business & Economics Languages : en Pages : 94
Book Description
Excerpt from The Potato Disease and How to Prevent It I should have preferred to delay the publication of my notes on the Potato Disease for another year, until ad ditional information could have been obtained on one or two points; but the losses by the disease last year were so very great, and the attention of the public so generally drawn to it, that on consideration I decided to publish without delay such information as I possessed; and if this little work should meet with a favourable re ception on the part of the public, any additional inform ation might be readily embodied in future editions. 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: Lewis Ralph Jones Publisher: Forgotten Books ISBN: 9780364894798 Category : Languages : en Pages : 44
Book Description
Excerpt from Disease Resistance of Potatoes The potato is one of the most important food crops Of the United States. It is, moreover, one which is subject to a number of serious plant diseases. Some of these, notably the late-blight, can be con trolled. By spraying. Yet this remedy is not applied by all farmers, and the annual loss amounts to many millions of dollars. Other dis eases, like dry-rot and the bacterial blight, are not controlled by spray ing and require a different line'of treatment. The subject of disease resistance in plants has received increased attention of late, and it is likely that the introduction of disease-resistant varieties of potatoes by supplementing spraying and special cultural practices, will be Of great practical value in lessening the Waste caused by disease. Although but little has been done in the United States toward secur ing varieties resistant to disease, the attention of potato specialists in other countries has already been directed toward this aim. AS a preliminary step in our work, Dr. L. R. Jones, botanist of the Vermont Agricultural Experiment Station, . Was commissioned to inquire into the occurrence of potato diseases abroad and the methods employed for their control, particularly with reference to the produc tion Of disease-resistant varieties. Doctor Jones spent six months from April to September, 1904 - in this work. In the course Of Doctor J ones's European itinerary, information of more or less value was secured at the following places, successively, and this was supplemented by a considerable correspondence covering a somewhat Wider area: Marseille, Naples, Florence, Munich, Halle, Berlin and vicinity, Dresden and vicinity, Bonn and vicinity, Wagen ingen (holland), Amsterdam and vicinity, Gron-ih gen, Delft, Gembloux (belgium), Paris and vicinity, London and vicinity, Reading, Cam bridge, and Edinburgh and vicinity. The thanks of the Department are accorded to the various Officials and other botanists in the coun tries visited, whose uniform courtesies made possible the success Of the mission. 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: Clarence Willard Carpenter Publisher: Forgotten Books ISBN: 9781391990675 Category : Business & Economics Languages : en Pages : 66
Book Description
Excerpt from Potato Diseases in Hawaii and Their Control Uniformity - Selection has shown that within a variety there are strains which, when isolated, behave in a more or less uniform manner with respect to size and Shape of tubers. Selection should be prac ticed from the hills at the time of digging the seed plat, keeping as specially desirable seed, tubers from hills yielding a maximum num ber of healthy tubers of fair size and uniform Shape. Hill selection - This method of selecting seed consists in marking, by stake or otherwise, the most desirable plants dur1ng the growing season. At digging time those marked plants having a maximum number of desirable tubers are specially set aside for seed. In this way desirable varietal characters of the plants and high-yielding qualities are selected together. Immature Seed - European growers have come to believe that, other things being equal, larger crops are produced by immature seed than by mature-seed. This refers to maturing Of the seed in the ground. Most of the locally grown seed at present is immature, Since the fields are regularly visited by blight or the tops dry -up with the Fusarium wilt disease, etc., at about the time of flowering. 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: William Allen Orton
Author: William Allen Orton
Author: William Allen Orton
Author: W. A. Orton
Author: W. a. (William Allen) 1877-1930 Orton
Author: William Allen Orton
Author: Donald Rockwell Porter
Author: JOHN WILLIAM. EASTHAM
Author: Frederick Bravender
Author: Lewis Ralph Jones
Author: Clarence Willard Carpenter