Forage crops for soiling, silage, hay and pasture . n broom-corn, a gain for the Leaming of KAFIB CORN 101 911 pounds, or 19 per cent. Onthe dry matter basis, therefore,the only variety that at all com-pared with maize was the Ever-green broom-corn, which is veryinferior in palatability and diges-tibility. The kafir corns are notcomparable with corn on the basisof yield of nutrients, and are notto be recommended except as sub-stitutes for corn in climates toodry for the latter. 4 One point should not be lost ^i^y^sight of with all these quick-grow-ing summer crops,—they arerelatively exhaustiv
Forage crops for soiling, silage, hay and pasture . n broom-corn, a gain for the Leaming of KAFIB CORN 101 911 pounds, or 19 per cent. Onthe dry matter basis, therefore,the only variety that at all com-pared with maize was the Ever-green broom-corn, which is veryinferior in palatability and diges-tibility. The kafir corns are notcomparable with corn on the basisof yield of nutrients, and are notto be recommended except as sub-stitutes for corn in climates toodry for the latter. 4 One point should not be lost ^i^y^sight of with all these quick-grow-ing summer crops,—they arerelatively exhaustive of the avail-able plant-food in the surfacesoil. For example, a crop of eighttons of Barnyard millet, whichfairly represents this group offorage crops, will remove froman acre in fifty to seventy-five %^days in round numbers 50 pounds of nitrogen,2G pounds ot phosphoric acid, and104 pounds of potash. % ^.f The same yield of maize will re-move from an acre in eighty toone hundred days only Fig. 18. Typical headof Red kafir corn 102 FORAGE CROPS. 45 pounds of nitrogen, 20 pounds of phosphoric acid, and 50 pounds of potash. This is 10 per cent more nitrogen,30 per cent more phosphoric acidand over 100 per cent more potashremoved by the special crops thanby the corn. The land, therefore, ismore rapidly and completely de-pleted of its available plant-food bythese summer-grown plants; andthis accounts for the fact thatthey cannot be successfullygrown on poor soils, and thatsubsequent crops, that haveapparently less ability to ap-propriate plant-food, cannotbe successfully grown withoutliberal manuring or characteristics shouldbe always taken into con-sideration when substitutingthis class of crops for corn inforage crop rotations. KAFIR CORN FOR DRY REGIONS It has been said that theFig. 19^ Yellow TBiio maize, nou-saccharine sorghums are one of the doura group. ^ KAFIR CORN IN KANSAS 103 especially adaptable to semi-arid and hot may be well, therefore
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