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Excerpt from Insects: Identification and Management in Illinois <p>Soybean production in Illinois has climbed steadily from million bushels in 1924 to almost 369 million bushels in 1979. This increase resulted from a threefold improvement in yields and an 85-fold expansion in the acreage planted. Today, soybean is a mainstay of Illinois's economy, accounting for a third of the total cash farm income. <p>With roughly 40 percent of the farmland planted to soybean, the crop may be found over much of the state's square miles (fig. A relatively long state (382 miles), Illinois covers a wide range of latitudes with noticeable differences in climate, soil type, topography, and natural plant cover. Soybean growing conditions vary accordingly from one part of the state to the next. <p>About the Publisher <p>Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com <p>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.