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<br />status stored on memory files by the cOlaputer was corrgcted as
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<br />required.
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<br />Each field rcprcscnta ti \~~. \....as assi[:ned farm::; in four different r,en-
<br />er:\l r,eographic locations to give them experienco in a variety of
<br />locations and C1'OpS. The Gralid Valley Dasin Unit is difficul t al1d
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<br />timo consu;"ing because tJi.e average field .size is small (12.5 acres).
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<br />Tho field l'epresentatIves devoto the same amount of tir.1o to each
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<br />field rega1'dloss of size.. During a farm visit they check such items
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<br />as crop condition, root :ono, water.table, soil noisture, irrigation
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<br />app1'icatiolls and efficiencies. Any assistance J."equested by the par-
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<br />ticipnnt, on ways to improve efficiencies or calculate application
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<br />rates was given.
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<br />Few fields, especially under the privnte companies, have water
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<br />measurement devices, and.. !;Jost \~ater measurement was done by the
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<br />field representatives. During the 1973 season the participants.
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<br />were urged to report irri~ation events and estimated applications
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<br />by le.tter or. telephono answering servico.
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<br />Ground-water observation ~'ells have been installed in' many fields
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<br />to determine the effects .'of high \~ater tables on crop consumptive
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<br />use. It has not been dctC'rmined yet if the high water tables arc
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<br />caused by overirri[:ation or canal seepa!;e. Additional \~ells \~el'e
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<br />installed in the "all of 1973. M;:,re ..'ells will be jointly installed
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