Excerpt from On the Control of Cereal and Forage Crop Pests That Mr. Dean does not know how to eradicate Johnson grass is plain from the following, under heading of Destruction of Johnson grass: It should be burned over whenever discovered and such areas plowed in the spring to prevent an early crop of heads (p. The fact is, such plowing prevents an early crop of heads all right, but keeps the grass growing from year to year The small isolated patches of the grassin the fence corners will carry the species over winter in ...
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Excerpt from On the Control of Cereal and Forage Crop Pests That Mr. Dean does not know how to eradicate Johnson grass is plain from the following, under heading of Destruction of Johnson grass: It should be burned over whenever discovered and such areas plowed in the spring to prevent an early crop of heads (p. The fact is, such plowing prevents an early crop of heads all right, but keeps the grass growing from year to year The small isolated patches of the grassin the fence corners will carry the species over winter in the seed (p. Exactly. And if these heads were cut in the spring before adults can develop and were subsequently cut whenever they became nearly old enough to mature a crop of adult midges. These same patches would constantly act as traps and keep the sorghum clear to that extent. It will be readily seen that the best results for a given effort are secured by making the trap patch of Johnson grass as far as practicable the only oviposition material for the time being. There is every reason to believe that it will be possible to work out a similar method of trapping for the control of the Wheat midge. 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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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
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PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
