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<br />/ R8-CD (2) <br />• <br />surface layer. Realignment of ditches and irrigation structures are <br />needed in some areas for a more uniform distribution of irrigation water. <br />Irrigation methods suitable for this soil are furrows, corrugation, <br />and sprinklers. Furrow irrigation is best suited to row crops. Furrows <br />should run across the slope. Sprinkler irrigation is well suited to most <br />crops. Use of this method permits the even controlled application of water, <br />reduces runoff, and minimizes the risk of erosion. Corrugations are suitable <br />for alfalfa, pasture, and small grains. Regardless of the irrigation method <br />used, water must be applied carefully to prevent runoff, and to control ero- <br />sion. <br />Returning all crop residue to the soil and using a cropping system that <br />• includes grasses, legumes, or grass-legum mixtures help to maintain fertility <br />and .i'_:::. Gra.r. sn! oc_ss.s respo: d to : itroo=:,, and .=gumes respond to <br />phosphorus. <br />In nonirrigated cropland areas, management is needed to conserve <br />mosture, control soil erosion, and maintain productivity of the so i1. Stubble <br />mulch tillage and incorporating crop residues in and on the surface are <br />essential to reduce runoff and erosion and to conserve moisture. Chiseling <br />or sub soiling are effective in breaking up tillage pans and improving water <br />penetration. Tillage operations should be kept to a minimum. <br />Native vegetation of this soil consists of western wheatgrass, mutton- <br />grass, junegrass, Indian ricegrass, big sagebrush, Gambel oak, serviceberry, <br />juniper, and pinon pine. Proper grazing use coupled with planned grazing <br />systems are the most important practices to maintain quality and quantity of <br />. desirable rangeland vegetation. Range seeding along with deferment will <br />