. Field crop production; a text-book for elementary courses in schools and brief courses in colleges. Agriculture. 64 FIELD CROP PRODUCTION plowing can be more thoroughly done, since it need not be rushed by other work. At the same time it lessens the work of the farmer in the spring when he is busiest. 49. Weathering. — Increasing the depth of plowing can be done more satisfactorily in the fall than in the spring. The subsoil that is turned up in the fall will be incorporated with the surface soil by freezing and thawing, which are excellent agencies in pulverizing the Fig. 17. — Afiel
. Field crop production; a text-book for elementary courses in schools and brief courses in colleges. Agriculture. 64 FIELD CROP PRODUCTION plowing can be more thoroughly done, since it need not be rushed by other work. At the same time it lessens the work of the farmer in the spring when he is busiest. 49. Weathering. — Increasing the depth of plowing can be done more satisfactorily in the fall than in the spring. The subsoil that is turned up in the fall will be incorporated with the surface soil by freezing and thawing, which are excellent agencies in pulverizing the Fig. 17. — Afield of corn almost completely destroyed by grubworms. 50. Killing of insects. — Many of the troublesome in- sects injurious to field crops can be effectively combated by fall plowing. Many insects spend the winter a few inches below the surface of the ground, some in the egg stage, some in the worm or grub stage. Fall or winter plowing will break many of the eggs or egg sacs, bring the caterpillar and pupa to the surface, where many will be killed by freezing and others eaten by birds, or skunks and other animals. The cut-worm and the grubworm pass the winter in the ground in the partly grown stage. Fall plowing has been recommended as one of the best methods. 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
