Annual report of the New Jersey State Agricultural Experiment Station and the Annual report of the New Jersey Agricultural College Experiment Station Volume 12
Автор:
New Jersey Agricultural Stations, 134 стр., ISBN:
1130029204
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 Excerpt: ...in the substance of the diseased portion. Figure 17 presents a magnified view of a part of the affected area, with the four fungus patches much enlarged. A branched hair is shown in the center, and is only one of emany that abound upon all parts of the egg-plant. The dark spots are spaces where the fungus threads have formed multitudes of spores, inclosed in a dense mass of the surrounding substance. When the spores are mature an opening is gradually formed near the middle of the exposed part, and the contents may pass out when swollen by the absorption of water. When such a dry surface is wet, the spores often pour out in a stream for some time. These spores are designed to spread the disease, and therefore all such affected plants should be burned. Pig. 16. A seedling...
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