. Agricultural bacteriology; a study of the relation of germ life to the farm, with laboratory experiments for students, microorganisms of soil, fertilizers, sewage, water, dairy products, miscellaneous farm products and of diseases of animals and plants. Bacteriology, Agricultural. Fig. 20.—CZo5- terium fasteuri- anum; an anaero- bic nitrogen fixer (Winogradski), Fig. 21.— Azotobacter agiUSf an aerobic ni- trogen fixer (Beyerinck). Fig. 22.—B. danicus, an aero- bic nitrogen fixer (Loh, and West), nitrogen—two or three times as much. In order to develop effi- ciently they must be supplied with
. Agricultural bacteriology; a study of the relation of germ life to the farm, with laboratory experiments for students, microorganisms of soil, fertilizers, sewage, water, dairy products, miscellaneous farm products and of diseases of animals and plants. Bacteriology, Agricultural. Fig. 20.—CZo5- terium fasteuri- anum; an anaero- bic nitrogen fixer (Winogradski), Fig. 21.— Azotobacter agiUSf an aerobic ni- trogen fixer (Beyerinck). Fig. 22.—B. danicus, an aero- bic nitrogen fixer (Loh, and West), nitrogen—two or three times as much. In order to develop effi- ciently they must be supplied with a considerable quantity of carbonaceous food, and in ordinary soil the humus furnishes this food. By the energy they obtain from this source they gather from the air an extra quantity of nitrogen. These nitrogen fixers are very susceptible to the presence of the smallest amount of acid, and fail to fix nitrogen entirely if the soil is even slightly acid. The use of a little lime to neutralize the acidity may thus fre- quently start an active nitrogen fixation in a soil in which it did not previously occur, and hence greatly increase its productive- ness. It has been shown also that this class of nitrogen fixers, though able to grow alone, will perform their functions best when growing with certain other soil organisms. They grow well with other fungi and with some alg^, organisms generally found asso- ciated with them in the 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 Conn, H. W. (Herbert William), 1859-; Conn, H. J. (Harold Joel), 1886-1975; Conn, H. W. (Herbert William), 1859- Agricultural bacteriology, a study of the relation of bacteria to agriculture. Philadelphia, P. Blakiston's Son & Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteriologyagricult
