The book Manual of Plant Diseases was written by author Sorauer, Paul, 1839-1916. [from Old Catalog] Here you can read free online of Manual of Plant Diseases book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Manual of Plant Diseases a good or bad book?
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In the case given, the roots of the apple trees were long, abnormally thin and browned, the leaves were very light in color and dropped 4 days earlier. The foliage was sparse, the wood growth scanty. As soon as the roots or even only a greater part of them reached soil not covered by grass the phenomena of disease dis- appeared. These phenomena agree essentially with those produced on heavy, impervious soils, with a scarcity of oxygen, so that it seems in no way neces- sary to assume any poison...ous action. We find, in many cases, especially on light soils, that the turf does no injury, if care is taken to have nutritive sub- stances within reach of the roots. On close clay soils, the grass is kept green for a long time by the water rising by capillary action from the subsoil, thereby removing a great deal of moisture from the subsoil without return- ing it in quantities worth mentioning during the period of vegetation, since the grass uses the atmospheric precipitation itself. Wilting.
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