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Book Land Improvement Measures in Relation to a Possible Control of the Beet Leaf Hopper and Curly Top Classic Reprint

Download or read book Land Improvement Measures in Relation to a Possible Control of the Beet Leaf Hopper and Curly Top Classic Reprint written by Robert Louis Piemeisel and published by Forgotten Books. This book was released on 2018-09-10 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Land-Improvement Measures in Relation to a Possible Control of the Beet Leaf-Hopper and Curly Top F rom the standpoint of control it is important that the beet leafhopper must have a continuous sequence of food plants through out the year ih order to maintain itself from season to season. In the ordinary development of leafhopper populations such a contin nous sequence depends upon three different sets of plants, Since in general there are no perennials capable Of serving as both breeding and food plants throughout the year. The first set of plants carries the insect through the fall-winter-spring period and the next set through the summer period However, the growing period Of these two sets Of plants always overlaps in the Spring, permitting the insect to go from the first to the second, but where fall rains are scanty there is a gap in the fall when summer annuals are dead and winter annuals have not germinated. During this period a third set of plants, functioning as hold-over hosts, is necessary to carry the insect until winter annuals germinate. 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.

Book The Beet Leafhopper in Utah

Download or read book The Beet Leafhopper in Utah written by George F. Knowlton and published by . This book was released on 1928 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Beet Leafhopper and the Curly leaf Disease that it Transmits

Download or read book The Beet Leafhopper and the Curly leaf Disease that it Transmits written by Elmer Darwin Ball and published by . This book was released on 1917 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Beet Leafhopper Classic Reprint

Download or read book The Beet Leafhopper Classic Reprint written by James Robert Douglass and published by Forgotten Books. This book was released on 2018-01-09 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Beet Leafhopper The beet leafhopper is a serious menace to sugar beet, bean, tomato, and other crops in the West, not because of direct damage by feeding, but because it transmits curly top disease. It is the only known carrier of this disease, which attacks many important agricultural crops, ornamental plants, and weeds. A sun-loving, dry-land insect, the leafhopper breeds in vast areas of weeds that have grown up on abandoned farmlands and deteriorated range. The misuse of land and the appearance of new weeds have created large tracts in the West which serve as breeding grounds for the leafhopper and as reservoirs of the curly top virus. When the weed hosts mature and dry, the nymphs die, and the adults that have not already moved are forced to find new food plants. They often travel long distances with the help of the wind. Generally, however, the movement is from the desert or rangeland to adjacent cultivated areas. In the course of these movements cultivated crops are infected with curly top (fig. 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.

Book Natural Replacement of Weed Hosts of the Beet Leafhopper as Affected by Rodents Classic Reprint

Download or read book Natural Replacement of Weed Hosts of the Beet Leafhopper as Affected by Rodents Classic Reprint written by Robert Louis Piemeisel and published by Forgotten Books. This book was released on 2018-09-11 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Natural Replacement of Weed Hosts of the Beet Leafhopper as Affected by Rodents Some apparently erratic changes, however, in the successions of vegetation that took place on areas where burning, plowing, and overgrazing were prevented were not explained. The eco logical studies as made from 1930 to 1944 on three 40-acre fenced plots and on unfenced tracts in southern Idaho now indicate that such variable behavior was due to destruction of vegetation by native animals, chiefly jack rabbits. These observations, reported and interpreted in this circular, demonstrate that in addition to burning, plowing, and excessive grazing, the feeding by rodents is a factor that in some instances disrupts plant successions and thereby retards the natural replacement of weed hosts of the insect vector of the curly top Virus. The studies of plant successions have thus produced results that are useful as apart of the basic information needed in promoting production of sugar beets and other crops affected by curly top. They also contribute toward a better understanding of range management problems in an area subject to intermittent farming. They should aid in the development of wise land use practices - a consideration of long-time significance and increasing importance. The studies deal specifically with communities of annual plants found on the desert-dry outlying lands bordering cultivated dis tricts and on range lands that were formerly covered by the northern desert-shrub type of vegetation - sagebrush, with its associated perennial grasses, and herbaceous perennials. Al though the communities of annual plants may be different on the nearby foothills and on higher plains and valleys of southern Idaho where the plant cover formerly consisted of other types of native perennial vegetation, some of the essential results of these studies will apply to these areas also, as they have already been found applicable in somewhat similar investigations in the San Joaquin Valley, Calif. This circular deals with the data obtained and the conclusions derived from their interpretation. 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.

Book The Beet Leafhopper and Curly top Situation in Utah

Download or read book The Beet Leafhopper and Curly top Situation in Utah written by George F. Knowlton and published by . This book was released on 1927 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dissemination of the Beet Leafhopper in California

Download or read book Dissemination of the Beet Leafhopper in California written by Francis Raymond Lawson and published by . This book was released on 1951 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Beet Leaf hopper Eutettix Tenellus Baker

Download or read book The Beet Leaf hopper Eutettix Tenellus Baker written by Rowland W. Haegele and published by . This book was released on 1927 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Movements of the Beet Leaf Hopper in 1930 in Southern Idaho

Download or read book Movements of the Beet Leaf Hopper in 1930 in Southern Idaho written by Percy Nicol Annand and published by . This book was released on 1932 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Beet Leafhopper and Its Control on Beets Grown for Seed in Arizona and New Mexico Classic Reprint

Download or read book The Beet Leafhopper and Its Control on Beets Grown for Seed in Arizona and New Mexico Classic Reprint written by van E. Romney and published by Forgotten Books. This book was released on 2018-03-19 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Beet Leafhopper and Its Control on Beets Grown for Seed in Arizona and New Mexico Rather large infestations in seed - beet fields in the Mesilla Valley have occurred by late September, although the more severe infestations have occurred after late October. 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.

Book Special Report On Part 1 Beet Leafhopper Control Part 2 Biological Control of Citrus Red Scale Part 3 Biological Control of Western Grape Skeletonizer

Download or read book Special Report On Part 1 Beet Leafhopper Control Part 2 Biological Control of Citrus Red Scale Part 3 Biological Control of Western Grape Skeletonizer written by California. Legislature. Joint Committee on Agriculture and Livestock Problems and published by . This book was released on 1951 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Preliminary Statement of a Program for the Control of Beet Leafhopper and Curly Top Outbreaks in Idaho with Notes on the Progress Made Toward Its Inauguration

Download or read book Preliminary Statement of a Program for the Control of Beet Leafhopper and Curly Top Outbreaks in Idaho with Notes on the Progress Made Toward Its Inauguration written by United States. Bureau of Entomology and Plant Quarantine and published by . This book was released on 1934 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: