. Field crop production; a text-book for elementary courses in schools and brief courses in colleges. Agriculture. 250 FIELD CROP PRODUCTION ment, from one place to another, of hay and seeds to which the bacteria may chng, is also an important agency in their distribution. 249. Inoculation. — In sections of the country where a legume has been grown for many years, the bacteria that work upon its roots may usually be found in almost all soils. Thus, when red clover has been grown for years in a community, no difficulty is usually ex- perienced from a lack of the proper variety of bacteria. Some
. Field crop production; a text-book for elementary courses in schools and brief courses in colleges. Agriculture. 250 FIELD CROP PRODUCTION ment, from one place to another, of hay and seeds to which the bacteria may chng, is also an important agency in their distribution. 249. Inoculation. — In sections of the country where a legume has been grown for many years, the bacteria that work upon its roots may usually be found in almost all soils. Thus, when red clover has been grown for years in a community, no difficulty is usually ex- perienced from a lack of the proper variety of bacteria. Some- times, however, the bacteria of certain crops are not generally distributed, especially in sections of the country where the legume is a new crop. Thus the variety that forms the nodules upon the roots of alfalfa is not generally distributed in all parts of the country. When they are not present, if the best results from the crop are to be secured, they must be supplied artificially. While the crop may sometimes be grown without the aid of the bacteria, it is not usually desirable to do so, because the plants then must draw upon the nitrogen supply of the soil, and, like non-leguminous plants, they then become soil exhausters instead of soil builders. Supplying the bacteria artificially is called inoculation. 250. Methods of inoculation. — The general methods employed in inoculation are: by applying prepared cul-. FiG. - Nodules on the roots of soy 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 Livingston, George. New York, The Macmillan company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
