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Water Supply Reserve Account ? Grant Application Form <br />Form Revised May 2007 <br />_______________________________________ <br />1c. Personnel - The staff at the Arkansas Valley Research Center (CSU AVRC) perform all crop production <br />activities. The oversight and interpretation of ET data from the lysimeter will involve a team of scientists from <br />CSU and USDA-ARS (see table of technical consultants and the appended qualifications of Drs. Bartolo and <br />Berrada). The initial operation of the lysimeter requires employment of skilled personnel who are knowledgeable <br />about the intricacies of the lysimeter installation and operation. A research associate has been employed by the <br />Arkansas Valley Research Center (CSU AVRC) and has been instrumental in the successful installation and <br />current activities of calibrating lysimeter instrumentation. This position is only partially funded for FY08. <br />1d. Deliverables ? The data obtained from the weighing lysimeter are used for two purposes. <br />a. <br />Direct measurement of the water use throughout the growing season. After each crop is studied, <br />Arkansas Valley specific information will be available on consumptive use. <br />b. <br />Calculation of crop coefficients for crops grown in the Arkansas Valley. The crop coefficient <br />(Kc) varies with time as the crop emerges, develops a canopy, and reaches maturity. The crop <br />coefficients are used in conjunction with the Penman-Monteith equation to compute ET for different <br />locations and growing conditions.The generalized relationship between Kc and crop growth stage is <br />shown below (from FAO Irrigation and drainage paper 56). <br />8 <br />