Download or read book Weedy Abandoned Lands and the Weed Hosts of the Beet Leaf Hopper (Classic Reprint) written by Robert Louis Piemeisel and published by Forgotten Books. This book was released on 2017-10-27 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Weedy Abandoned Lands and the Weed Hosts of the Beet Leaf Hopper The distribution of the principal weed hosts of the Snake River plains is discussed and their relative abundance compared with three other regions of the Southwest. The reestablishment Of the original vegetation on such denuded tracts is traced from the time of abandonment, for agricultural purposes, of the lands. The plant cover in the intervening stages is successively the weeds of irrigated fields, annual weeds of semi arid lands, annual and perennial gr asses, and finally shrubs. The greatest single factor in retarding the reestablishment of the original vegetation is unrestricted grazing. Under the present sys tem the reestablishment has progressed so that recently abandoned lands are distinguishable from the older abandoned lands, but the progress is too Often slow and very irregular. From the standpoint of the reduction in numbers of the weed hosts of the leaf hopper, downy bromegrass is the most rapid and most effective cover over large tracts. The stands, however, are very likely to be destroyed before being replaced by the longer lived plants, and the destruction of the stand of downy bromegrass results in a return to an irregular first or weed stage. Sagebrush may, under certain limited conditions, be as rapid in covering the ground, and the cover be relatively permanent, but this occurs on rather small tracts. 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.