Download or read book The Obscure Scale on the Pecan and Its Control written by Howard Baker and published by . This book was released on 1933 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the prevalence of the obscure scale in Louisiana pecan orchards, the increasing demands for recommendations for its control, and the wide variation in the control measures that have been recommended, a study of its biology and control was made from 1929-1932 inclusive, at the pecan insect laboratory of the United States Bureau of Entomology at Shreveport, La. The results of these investigations are reported briefly in this circular.
Download or read book The Obscure Scale on the Pecan and Its Control Classic Reprint written by Howard Baker and published by Forgotten Books. This book was released on 2018-09-10 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Obscure Scale on the Pecan and Its Control The Obscure scale is an important pest of all varieties Of pecans throughout a large portion Of the pecan belt. It attacks all parts Of the tree proper, developing first on the lower, inner portions of the trees and spreading gradually outward and upward. Limbs up to 3 inches in diameter are most frequently killed by its attacks. The greatest injury results from the gradual killing Of branches and the weakening of infested trees, which renders them more subject to attack by borers, other insects, and diseases. Eggs are first extruded between the middle of May and early in June, and crawlers Can be found a few days later. Both eggs and crawlers are present in large numbers throughout June and until the middle Of July, after which they gradually-decrease in numbers until by the first of August only a few remain. The first crawlers settle under Old scale covers, and those that emerge from beneath the cover of the parent scale settle within a short time and usually not far away. They gradually increase in size, and their covers assume the color Of the surface on which they 'are resting. Most of the Winter is passed by the male scale in the second larval stage and by the female in the stage preparatory to the second molt. Development is resumed late in the winter, and most specimens reach the adult stage by the middle of April, adult males emerging as the females are completing the final molt. Mating takes place at once and eggs are soon formed. There is but a single generation each year. Parasites, predators, and diseases exert a considerable influence in reducing the numbers of this scale, and in some instances appear to hold infestations in check without the aid of artificial control measures, though artificial control is usually necessary. 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 The Obscure Scale on the Pecan and Its Control written by Howard Baker and published by . This book was released on 1933 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Obscure Scale on the Pecan and Its Control written by and published by . This book was released on 1933 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Obscure Scale on the Pecan and Its Control written by and published by . This book was released on 1933 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Obscure Scale on the Pecan and Its Control written by Howard Baker (Entomologist) and published by . This book was released on 1933 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the prevalence of the obscure scale in Louisiana pecan orchards, the increasing demands for recommendations for its control, and the wide variation in the control measures that have been recommended, a study of its biology and control was made from 1929-1932 inclusive, at the pecan insect laboratory of the United States Bureau of Entomology at Shreveport, La. The results of these investigations are reported briefly in this circular.
Download or read book Circular written by and published by . This book was released on 1932 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Circular United States Department of Agriculture written by United States. Dept. of Agriculture and published by . This book was released on 1933 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controlling Insects and Diseases of the Pecan written by and published by . This book was released on 1963 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Controlling Insects and Diseases of the Pecan written by Max Raymond Osburn and published by . This book was released on 1966 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Miscellaneous Publication written by and published by . This book was released on 1936 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Peat Land in the Pacific Coast States in Relation to Land and Water Resources written by Alfred Paul Dachnowski-Stokes and published by . This book was released on 1936 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Publications of the United States Department of Agriculture from January 1931 to December 1935 Inclusive written by Mabel Hunt Doyle and published by . This book was released on 1936 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Control in the Western United States written by J. R. Nechols and published by UCANR Publications. This book was released on 1995-01-01 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Public Documents of the Congress and of All Departments of the Government of the United States for the Period from to written by and published by . This book was released on with total page 3264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalogue of the Public Documents of the the Fifty third Congress to the 76th Congress and of All Departments of the Government of the United States written by United States. Superintendent of Documents and published by . This book was released on 1896 with total page 3260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of the Chief of the Bureau of Entomology written by United States. Bureau of Entomology and published by . This book was released on 1928 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
