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<br />t- <br />r- <br />~ <br /> <br />f::; <br />C-.., <br /> <br />....-. <br />-" <br /> <br />40 per cent. <br /> <br />This comparison with the Use of Water study is made on fields of <br /> <br />sugar beets. This crop is one of the principle cash crops of the <br /> <br />area. <br /> <br />YIELD <br /> <br />The effects of irrigation scheduling on crop yield cannot be <br /> <br />accurately documented. Many factors effect crop yield. These <br /> <br />, <br />include individual farming practices, fertilizer applications and <br /> <br />climatic conditions. <br /> <br />Many of the 1972 participants indicated an increase in yield on <br /> <br />scheduled fields as compared to fields not scheduled. This could <br /> <br />be one reason why most 1972 farmers increased the number of acres <br /> <br />to be scheduled this year. <br /> <br />The highest sugar beet yeild report in the Grand Valley in 1972 was <br /> <br />that of a farmer participating in the irrigation scheduling. The <br /> <br />one sugar beet field scheduled by this farmer had a yield lQ <br />I <br /> <br />per cent greater than his overall average. <br /> <br />SALINITY <br /> <br />The prime objective of the irrigation scheduling and management program <br /> <br />in the Grand Valley is to reduce the contribution of salts to the <br /> <br />Colorado River. <br /> <br />The high irrigation applications in the Grand Valley are closely <br />