. Farm horticulture, prepared especially for those interested in either home or commercial horticulture. Vegetable gardening; Fruit-culture. 70 CULTIVATION AND TILLAGE by making the soil warmer, and by aiding in hastening the chemical processes. Denitrification is the re\'erse of nitrification, and is the result of the working of a class of bacteria that break down the nitrates, setting free nitrogen, which passes off as a gas. The condition necessary for this class of organisms to work is the absence of air, and when frequent thorough culti^a- tion is given and the soil is well aerated these
. Farm horticulture, prepared especially for those interested in either home or commercial horticulture. Vegetable gardening; Fruit-culture. 70 CULTIVATION AND TILLAGE by making the soil warmer, and by aiding in hastening the chemical processes. Denitrification is the re\'erse of nitrification, and is the result of the working of a class of bacteria that break down the nitrates, setting free nitrogen, which passes off as a gas. The condition necessary for this class of organisms to work is the absence of air, and when frequent thorough culti^a- tion is given and the soil is well aerated these bacteria perish. So it follows that the best way of eradicating these injurious bacteria is to maintain thorough and complete cultivation. Besides destroying the denitrifying bacteria more plant food is made available by increasing and by stimulating the reproduction and the growth of the friendly nitrifying Fig. 22.—A single horse adjustable cultivator. Implements for Cultivation.—^The implements for cultiva- tion may briefly be summed up as follows: (1) The plows, of which there are the walking plow, the sulky plow, the gang plow, the disk plow, and the steam plow; (2) the harrows, of which there are the smoothing harrow, the spring-tooth harrow, the disk harrow, the cut away disk harrow, the spading harrow, and the plow cut-disk harrow;. 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 Hood, George William, 1886-. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookcentury1900, booksubjectfruitculture, booksubjectvegetablega
