Publisher's Synopsis
Excerpt from Alfalfa Wilt as Influenced by Soil Temperature and Soil Moisture
Root growth is poorer in infected plants than one would judge it to be by. The appearance Of the top growth. This fact is shown by the weights and ratios given in Table 2. The effect of disease on root growth is least evident at low temperatures, at which the disease makes slow progress, but becomes more pronounced at medium and high temperatures. Thus root growth in infected plants is especially poor during the hot weather of summer. The consequent prevention of storage of adequate root reserves may be responsible in part for the high mortality from the disease during the winter.
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