The Forest Insect And Disease Situation

Excerpt from The Forest Insect and Disease Situation, Lake States, 1960 Insects and diseases play an important part in the reduction of our vast forest resource. Each year they cause large losses in timber growth and result in tree mortality. But that is not all: These agents attack the forest from seed to finished product. Stocking levels are lowered, growth is retarded, and trees are deformed, thus reducing both quality and quantity of forest products. The protection of our forests against these destructive agents is the responsibility of everyone concerned with the national economy. This report summarizes the information collected by many agencies and individuals on the forest insect and disease situation in the lake States during 1960. The most important aspects are presented briefly in the next few pages. For more detailed discussion see sections on The More Important Forest Insects (or Diseases). 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.

Excerpt from The Forest Insect and Disease Situation: Lake States, 1958 The forest disease Situation, unlike that of forest insects, does not as a rule change rapidly from year to year. The overall disease situationin the region was described in the 1956 report.3/ In the present report, as in that for 1957, attention is limited to marked changes in prevalence of diseases and to new diseases that attracted attention during the year. Red pine root rot appeared in one of the three nurseries that suffered from black spruce root rot in 1957. A 50 - percent loss occurred in one compartment as a result of this disease. 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.

Excerpt from The Forest Insect and Disease Situation, Lake States, 1959 White grubs are frequently overlooked because of the difficulty in observing direct damage. Many thousands of seedlings are killed each year, and thousands of acres of plantings require chemical protection. In natural stands attention has been focused for several years on four defoliators that have been in outbreak status in various parts of the Lake States. 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.