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..- .- <br />Because precipitation is not sufficient for annual croppin_, a cropping <br />system that includes small grain and stmner fallow is most suitable. <br />Tillage should be kept to a minimum. t411ntaining crop residue on or near <br />the surface reduces na~off, reduces soil blowing, and helps to maintain soil <br />tilth and organic matter content. Soil blowing can be reduced };,o planting <br />crops in alternate strips at right angles to the prevailing wir::.. <br />This unit is well suited to irrigated crops. It may be li~~ited by <br />active channels. Eln-row, border, corrugation, and sprinkler irrigation <br />systems are suited to this unit. Location of channels may res~:-ict <br />irrigation methods. Irrigation water needs to be applied at a rste that <br />insures optimum production without increasing deep percolation, runoff, and <br />erosion. Fbr the efficient application and removal of irrigat_:,n water, <br />leveling is needed in sloping areas. Maintaining crop residue on or near <br />the surface reduces runoff, reduces soil blowing, and helps to raintain soil <br />tilth and organic matter content. Maintaining border scrips and restricting <br />machinery helps stabilize banks and channels. Crops respond to nitrogen and <br />phosphate fertilizer. <br />