. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 3° MYCOLOGY (Fig. 9). The presence of these bacteria causes the formation of swell- ings, tubercles, or nodules on the roots of the leguminous plants. Here Bacillus radicicola remains, utilizing free atmospheric nitrogen until about the time of flowering of the host, when it begins to assume in- volution forms, enlarging considerably and assuming S-shaped or Y-shaped forms (Fig. 10). Then they are gradually absorbed by the . â "'vwr^. Fig. 9.âCells of root tubercle of Lupinus angu
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 3° MYCOLOGY (Fig. 9). The presence of these bacteria causes the formation of swell- ings, tubercles, or nodules on the roots of the leguminous plants. Here Bacillus radicicola remains, utilizing free atmospheric nitrogen until about the time of flowering of the host, when it begins to assume in- volution forms, enlarging considerably and assuming S-shaped or Y-shaped forms (Fig. 10). Then they are gradually absorbed by the . â "'vwr^. Fig. 9.âCells of root tubercle of Lupinus angustifoUus magnified to show the bacteria; four cells with nuclei. {After Moore, Geo. T., Yearbook U. S. Dept. Agric, 1902,'pl. xxxix.) green leguminous plants and their substance is transformed into a form of nitrogenous substance, which is utilized by the leguminous host, either as food, or stored as nitrogenous reserve supplies. The nodule becomes emptied of its contents and remains as a hollow sac, enough of the organisms being returned to the soil to seed it and provide for infection of other leguminous crops that may follow. The growth. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
