Download or read book European Corn Borer Research Population Investigations a Preliminary Report Upon the Status of the European Corn Borer North Central States Are 1931 written by United States. Plant Quarantine and Control Administration and published by . This book was released on 1931 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Report Upon the Infestation and General Status of the European Corn Borer in Western New York written by Hastings Newcomb Bartley and published by . This book was released on 1931 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Progress Report on the Investigations of the European Corn Borer written by D. J. Caffrey and published by . This book was released on 1927 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Prevalence of the European Corn Borer in the East North Central States written by Arlo McGrillis Vance and published by . This book was released on 1942 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by and published by . This book was released on 1945 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Complete Research Program European Corn Borer 1929 written by United States. Bureau of Entomology and published by . This book was released on 1929 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the Joint Committee on the European Corn Borer written by Joint committee on the European corn borer and published by . This book was released on 1927 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Report Upon the Infestation and General Status of the European Corn Borer in Western New York written by United States. Department of Agriculture and published by . This book was released on 1931 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Prevalence of the European Corn Borer in the East North Central States Classic Reprint written by Arlo McGrillis Vance and published by Forgotten Books. This book was released on 2018-08-18 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Studies on the Prevalence of the European Corn Borer in the East North Central States Annual fall abundance of the corn borer in comparable territory surveyed in Ohio, Michigan, and Indiana, from 1934 to 1939, inclua sive, has ranged from an average low of 12. 6 larvae per 100 plants In 1934 to a maximum of in 1939. 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.
Download or read book Complete Research Program European Corn Borer written by and published by . This book was released on 1929 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Report Upon the Infestation and General Status of the European Corn Borer in Western New York Classic Reprint written by Hastings Newcomb Bartley and published by Forgotten Books. This book was released on 2018-04-05 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Preliminary Report Upon the Infestation and General Status of the European Corn Borer in Western New York The earlier Observations were made primarily to determine the extent and seriousness of the infestation in the western New York area, while later observations were intended to supply information to interested persons concerning the progress of the infestation. The early Observations showed no severe damage in western New York, but the fact that other areas had experienced severe damage indi cated that the infestation in western New York might become seri ous enough to interfere with the production Of corn, which is an important crop in this area. When first discovered in 1919, the insect was infesting an area of approximately 25 square miles in the vicinity of Silver Creek, Chautauqua County. On July 1, 1920, there were 469 square miles of infested territory in the area border ing Lake Erie. Not only had the insect spread to new territory, but the original infestation in Chautauqua County had become more severe. In 1926 practically the whole of New York State and one half of Pennsylvania had become infested. Observations were made in ears, stubble, and entire plants. Most of the Observations of ears were made at canning factories, although it was Often possible to examine small numbers of ears in the field. Whenever possible, the sample used in estimating the degree of plant infestation in a field amounted to 100 plants per acre, but the minimum in any one field was 100 plants and the maximum, 500 plants, equal numbers of consecutive plants being taken in the center of each quarter and in the center of the field. The same method of selection was used in making stubble Observations. The 1920 infestation was comparatively light, and no commercial damage was noted. The most severe infestation was found in a small field of early planted sweet corn, where 45 per cent of the plants were found to be infested. The maximum stubble infesta tion in 1921 was per cent. After 1921 the degree of infestation increased steadily until 1926, when approximately 67 per cent of the plants in the area under Observation were infested. At this time the average infested plant contained larvae. During the period prior to 1927 the degree of infestation increased from 65 larvae per 100 plants in 1921 to 242 larvae per 100 plants in 1926. No general commercial damage occurred prior to 1926, although reports from individuals in 1924 and 1925 indicated isolated cases of commercial damage. In 1926 commercial damage was general, and it was neces sary for canning factories to employ special field inspectors and additional helpers at the sorting tables. It was also necessary in 1926 to use special machinery in treating infested ears. 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.
Download or read book European Corn Borer Control written by Harry James Reed and published by . This book was released on 1931 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book European Corn Borer and Its Control in the North Central States written by Iowa State College. Agricultural Extension Service and published by . This book was released on 1952 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book European Corn Borer and Its Control in the North Central States written by University of Nebraska--Lincoln. Agricultural Research Division and published by . This book was released on 1972 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes the European Corn Borer and its lifecycle; describes and illustrates its characteristic damage; and recommends control measures.
Download or read book Investigations on the Control of the European Corn Borer Classic Reprint written by Raimon Lewis Beard and published by Forgotten Books. This book was released on 2017-11-18 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Investigations on the Control of the European Corn Borer When the eggs are deposited upon corn plants which have reached the tassel stage, the newly hatched larvae usually do not attack the tas'sel, nor do they feed to any extent upon the surface of the leaf blades; under these Circumstances they enter the stalk directly, or the thick midrib of the more tender leaf blades. If the plant has developed an ear, the newly hatched larvae frequently feed upon the tender tips of the husks and upon the silk, or work: their way down between the silks into the ear and feed upon the grain and cob. 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.
Download or read book Investigations on the Control of the European Corn Borer written by Raimon Lewis Beard and published by . This book was released on 1942 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Factors Influencing Populations of the European Corn Borer Ostrinia Nubilalis Hubner in the North Central States written by and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
