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<br />~ <br />. ~!J <br />(\.1 <br />'<""'l <br /> <br />""-'" <br />,." <br /> <br />An additional solution may be leveling on grade by laser or by conventionally <br />controlled equipment. <br /> <br />Silting of the flow measuring flumes may be indicative of excess furrow flows, a <br />steep grade, poor furrow compaction, high silt load in the irrigation water, and/or <br />recently cultivated ground. Future studies should consider identifying the cause <br />and quantifying the amount of silting. Adequate manpower and equipment to <br />measure the sediment content of the water during an irrigation are needed. <br /> <br />1994 PLANS: <br /> <br />The grant from Bureau of Reclamation, USDI, has been used for this demonstration <br />and evaluation program and has been terminated after 1993. Evaluation <br />equipment will be available for use and continued irrigation evaluations will be <br />made using Cooperative Extension funds. <br /> <br />Plans for the 1994 crop year include continued furrow flow evaluation, immediate <br />processing of data and quick return of the information to the farmer, and increased <br />emphasis on improved water management by the cooperators. <br /> <br />Comparison of nitrate nitrogen,sediment and phosphorous contents of the tail <br />water of the surge sets and conventional sets will be made when funding is <br />available. <br /> <br />Results of the surge fertigation program as noted in a previous report and irrigation <br />water management concepts as determined by the surge demonstration and <br />evaluation program will be stressed at meetings and <br /> <br />1 2 <br />