The California fruits and how to grow them; a manual of methods which have yielded greatest success, with the lists of varieties best adapted to the different districts of the state . tion on the construction of under-drains is too availablethrough other sources to call for its presentation in this connection. Drainage and Irrigation.—A special importance attaches to com-plete and systematic drainage in connection with irrigation. Thereis pressing need of such provision where the soil has become overloadedby seepage water from irrigation ditches, and it is well that people insuch situations ar
The California fruits and how to grow them; a manual of methods which have yielded greatest success, with the lists of varieties best adapted to the different districts of the state . tion on the construction of under-drains is too availablethrough other sources to call for its presentation in this connection. Drainage and Irrigation.—A special importance attaches to com-plete and systematic drainage in connection with irrigation. Thereis pressing need of such provision where the soil has become overloadedby seepage water from irrigation ditches, and it is well that people insuch situations are waking up to the need of coupling drainage outletswith their irrigation inlets. Another matter closely allied to this is theaction of alkali on soils thus artificially watersoaked. This has beenmade the subject of a special publication by Professor Hilgard, towhich allusion has already been made in Chapter III. Drainage isplainly essential, both in individual farms and in districts where thewater level is rising too high, and the striking statements given belowby Professor Hilgard should incite all to give immediate attention tothe needs of vines and trees in this Furrower at work in orange orchard of A. D. Bishop. DRAINAGE AND IRRIGATION 219 The following summary of drainage needs, and the advantage ofproviding drainage when needed, is made by Professor Hilgard: In the valleys and plains of the arid irrigation countries the soils are pre-dominantly of a light, sandy or silty nature, easily penetrated to great depthsby water and air. With these the roots of plants also reach to such depths,drawing therefrom not only moisture but also plant food, which in thesesoils is, as a rule, very abundant. The plants of the arid region thus areenabled to utilize nearly as many feet of soil mass as in the regions ofsummer rains inches would be drawn upon; and it is evident that this advan-tage, which postpones for a long time the need of fertilization, should notbe lightly thr
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Keywords: ., bookcentury1900, bookdecad, booksubjectfruitculture, bookyear1912
