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Annals of Applied Biology, 1933, Vol. 3

Excerpt from Annals of Applied Biology, 1933, Vol. 3: The Official Organ of the Association of Economic Biologist In 1914 complaints were received by the South-Eastern Agricultural College at Wye of serious diseases affecting the plantations of fig-trees in the district of Sompting, Sussex. On a visit being paid in May 1914 to the affected plantations, fig-trees of all ages were found to be suffering from fungous attacks of two kinds. A species of Botrytis was found on the tips of the branches, apparently gradually killing them back. This disease is still under observation and will be the subject of a further communication. The second disease which occurred was a "canker" of the branches. In some cases, where old trees were badly attacked, numerous "cankers" were found, both on the younger branches, and on the old, main branches, often quite close to the ground. With the progress of the disease, the "canker" area enlarges, until the tissues extending through the branch are killed, with the result that the parts above die. With the successive removal of these "cankered" branches the productiveness of the tree is soon seriously impaired. The majority of the trees in these plantations are of the variety known as "Brown Turkey," but a few are of the "White Marseilles" variety. It was obvious from the effects produced that this "canker" disease was of serious economic importance; it was the opinion of the farmer of the largest fig-plantations that unless the cause of the disease could be discovered and a remedy devised the whole future of Fig-growing in that district was threatened. The constant occurrence of a fungus with pycnidial fructifications on the cankered area was noted in the field, and the following notes were made from the examination of the material collected. 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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