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This is a reference book on the classification, distribution, ecology and control of poisonous and aggressively invasive plant species on rangeland. The plants covered include leafy spurge, snakeweeds, thistles and knapweeds, woody species such as juniper, rabbitbrush, oakbrush, mesquite and saltcedar, and other noxious weeds such as dyers woad, cheatgrass and tansy ragwort.
Excerpt from Canada Thistle and Its Control Canada thistle,2 a perennial weed, seriously reduces crop yields wherever sizable infestations occur. Infestations occur throughout the northern half of the United States. As shown in figure 1, the Montana Idaho Washington Wyoming area and the Minnesota Wisconsin area have the most severe infestations. In Montana, Idaho, and Washington, Canada thistle is reported to cause heavier losses than any other perennial weed. This weed can be controlled by cropping and cultural practices and by applying herbicides. 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.