. Corn; growing, judging, breeding, feeding, marketing; for the farmer, student and teacher of agriculture, a textbook for agricultural colleges and high shcools. Corn. FALL PLOWING 147 hshed so readily with deep |)lo\viiig as wlicii the plmving is shallow. Plowing- breaks up the capillary connection with the sub-soil, which must in turn be re-established or A'igorous plant growth is im- possible. Deep spring plowing and spring sub-soiling arc likely to result in diminished crops, cspiccially if done after the spring rams. The loosening of the soil to great depths admits air and facilitates th
. Corn; growing, judging, breeding, feeding, marketing; for the farmer, student and teacher of agriculture, a textbook for agricultural colleges and high shcools. Corn. FALL PLOWING 147 hshed so readily with deep |)lo\viiig as wlicii the plmving is shallow. Plowing- breaks up the capillary connection with the sub-soil, which must in turn be re-established or A'igorous plant growth is im- possible. Deep spring plowing and spring sub-soiling arc likely to result in diminished crops, cspiccially if done after the spring rams. The loosening of the soil to great depths admits air and facilitates the loss of soil moisture. It also interrupts capillarity so that the moisture is not readily drawn from greater DIAaEAM SHOWING THE EFFECT OF THE MOLD BOARD UPON THE CAPILLARY TUBES IN THE SOIL. The layers of soil by gliding over each other break off the tubes. The. more abrupt the mold board the greater the amount of crumbling of tlte furrow-slice. Fall Plowing. Fall plowing is not considered advisable in the south, where the winters arc Aery mild, accompanied with little or no cold weather. In Illinois, Iowa, Minnesota and Nebraska, the temper- ature becomes low and the weather is so variable as to cause con- siderable heaving of the surface. Freezing disintegrates the soil, and the mellowing" of the furrow slice allows the nitrifying bacteria to begin action early in the spring. Weedy areas are plowed in the fall to check the growth and bury the immature seeds. In fact, many consider this the only object of fall plowing. Wherever a crop, whether a crop of weeds or of fall forage, grows late in the fall, the following corn crop is slow in starting. That is, the available plant food was drawn upon until cold weather set in, thus not allowing the formation of soluble compounds during the warm weather of the autumn months. In the rougher corn sections, fall plowed fields wash so badly and ditches form so quickly that the practice should be discontinued. This is espe
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectcorn, bookyear1915
