Excerpt from Gum Diseases of Citrus Trees in California Previous investigators had come to the conclusion that all gum diseases of citrus trees in California originated independently of micro-organisms.1 It was held that these diseases were largely auto genous in their nature, and frequently induced through the effects of certain climatic or soil conditions alone. It now appears evident that these environmental conditions cannot by themselves initiate the severe forms of gummosis in citrus earlier attributed to them, ...
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Excerpt from Gum Diseases of Citrus Trees in California Previous investigators had come to the conclusion that all gum diseases of citrus trees in California originated independently of micro-organisms.1 It was held that these diseases were largely auto genous in their nature, and frequently induced through the effects of certain climatic or soil conditions alone. It now appears evident that these environmental conditions cannot by themselves initiate the severe forms of gummosis in citrus earlier attributed to them, although certain factors are found to play (as they do in most para sitio diseases) an important role as contributing conditions which favor infection and invasion of the host by the causal parasites. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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.
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Choose your shipping method in Checkout. Costs may vary based on destination.
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