Excerpt from White Pine Blister Rust Control in the Northwestern Region: January 1 to December 31, 1946 Methods. Ammonium.sulfamate and 2,4 d in their respective fields replaced Ktlacide in the treatment of ribes in stream type. Ammonium sulfamate is effective on both Ribes p_tiolare and R. Lacustre which often occur to gether. Its use in such situations cuts labor costs about 50 per cent since the job is done in one Operation, whereas only R. Petiolare was killed with Atlacide, and R. Lacustre had to be pul ed by hand. Whar er. Petiolare occurs alone, -d is used, costing only 2 cents per gallon as against about 14 cents for other chemicals. Where chemical must be back-packed into remote areas, substantial labor savings are made since the amount of -d required of other chemicals necessary to do the'same job. With the new developments in chemicals, power spraying equipment, has been tested for extending this method-of ribes eradication to upland areas. Four-power units have been secured and are being mounted lower on the trucks to increase maneuverability in mountain. 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.