. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions . ry when large wide-spreading trees areirrigated by the furrow method. Cross-furrowing is alsoused with newly-set trees when the cost of water is suchas to require the most eco-nomical use. After the irrigator haswalked along the row ofstands and opened enoughjets to consume the head ofwater, one to each furrow,he proceeds to the lower endand awaits the arrival of thewater. As soon as two orthree runs are through, hewalks across the lower endand take
. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions . ry when large wide-spreading trees areirrigated by the furrow method. Cross-furrowing is alsoused with newly-set trees when the cost of water is suchas to require the most eco-nomical use. After the irrigator haswalked along the row ofstands and opened enoughjets to consume the head ofwater, one to each furrow,he proceeds to the lower endand awaits the arrival of thewater. As soon as two orthree runs are through, hewalks across the lower endand takes note of the progressof the water in each furrow bynumber. Returning to theupper end, he cuts down theflow in those furrows whichare through and increasesthe flow in the others. Thisprocess is repeated severaltimes until just enough wateris admitted to each furrow torun through but not waste atthe lower end. All the whilehe must devote some time to locating and plugging gopherand mole holes, which are apt to intercept some streams,and to keeping a watch for dams, which are accumula-tions of floating leaves which force the water to rise and. Fig. 60. —The King soil sam-pler is very useful for deter-mining the downward progressof irrigation water. Irrigation 203 break over from one furrow into another, thus causingserious trouble. After once well regulated, the watershould not require much attention, and is allowed to runtill the ground is soaked to a depth of four feet as ascer-tained by digging or pushing down the shovel being turned off, the water in the soil will usuallypercolate a foot or two farther, thus wetting the requiredfive feet. In case the water will not soak down onaccount of the presence of a hard layer such as plow-soleor hardpan, this condition should be remedied at may be done either by blasting the soil in the case ofhardpan or by using a sub-soil plow as described above inthe case of ordinary plow-sole. CHAPTER XIIIPRUNING AND TOP-WO
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcitrusfruits, bookyea
