. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. SPRING TOOTH AND ACME HARROWS 153 Commonly, the disk harrow is all that is required to prepare a good seed bed for small grains on potato and corn land. For weeding and summer fallowing^ these machines are indispensable. Sometimes it is desirable to use the disk harrow on land before it is plowed; to break up the surface crust or lumps, to cut up and work trash into the seed bed, and to conserve moisture. When disking is done for the first two reasons, the furrow slice comes into more inti
. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. SPRING TOOTH AND ACME HARROWS 153 Commonly, the disk harrow is all that is required to prepare a good seed bed for small grains on potato and corn land. For weeding and summer fallowing^ these machines are indispensable. Sometimes it is desirable to use the disk harrow on land before it is plowed; to break up the surface crust or lumps, to cut up and work trash into the seed bed, and to conserve moisture. When disking is done for the first two reasons, the furrow slice comes into more intimate contact with the subsoil. When the seed bed has been made sufficiently mellow or loose through disking, the smoothing or drag harrows are used to give the finishing FiQ. 93.âAcme harrow. Spring-Tooth and Acme Harrows (Figs. 93 and 94).âThe spring-tooth harrow is a most efficient tool on rough and stony ground, and on new land in wooded sections. It may also be used instead of the disk harrow, for pulverizing sandy and gravelly soils; and it may be used effectively in alfalfa fields to loosen the soil and eradicate weeds and grass. It is a more effective tool than the spike- tooth harrow. â ⢠. ⢠, -' ^^ The Acme or blade harrow is used to a considerable extent in some sections for pulverizing, compacting and for killing weeds. This machine gives best results on loamy soils free from stones. ^ Summer fallowing is the tilling of uncropped land during the summer. This may be done with the plow or harrow. The common objects of summer fallowing are: to kill obnoxious weeds, to store rainfall of one yea,r for the next, and to conserve 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 Weir, Wilbert Walter, 1882-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920
