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<br />/f:.;~:}~ <br />, :.::.:;'/ <br /> <br />hoped that, as more information becomes available and articles are published on the benefits of using <br />surge, the interest by agricultural producers and others will also increase, It is truly a matter of <br />technology o'ansfer needed by both the producer and the resource planner, <br /> <br />f',:> <br />to <br />l\J <br />IV <br /> <br />Concluding Remarks <br /> <br />The principle causes of having unusable data include cross-over washing of furrows and <br />corrugations, siltation of the stilIing well or displacement of the pulley from the potentiometer due to <br />strong wind or disturbances created by wildlife. Surge irrigation has the potential for the operator to <br />under-irrigate, therefore requiring more attention by the operator to the soil moisture condition of the <br />given crop-root profile. Soil moisture deficits were established on the basis of SCS data for water <br />holding capacity, As a general rule, when available soil moisture is depleted to fifty percent, irrigation <br />water is needed. In the future, soil moisture deficits need to be closely monitored by use of a soil probe, <br />gypsum blocks, etc. The soil moisture depletion should be checked by tracking the ET data with the <br />use of a weather station and field monitOling, In the first year of the program (1992), fanners tended <br />to over-irrigate. In 1993, after a year of experience in using surge irrigation, the overall Irrigation Water <br />Management performances were greatly improved, <br /> <br />The cooperators tend to use Surge on their most difficult fields, leaving their best fields out It <br />must be realized that surge irrigation should be used as a tool to achieve better irrigation waterefficiency, <br />that it cannot overcome some field constraints and that field monitoring is still necessary, When <br />irrigation events were not preplanned and field technicians were not informed, the result was missed <br />opportunities to monitor irrigation events, Hopefully this will not happen in the future, More <br />educational meetings and frequent visits will be necessary to overcome the situation. The 1992 <br />infiltration data is shown in Table 3 for Delta and Table 5 for Montrose. Note, the intake rate observed <br />at Farms M5 and M8 does not follow the trend as seen in Table 4 for deep percolation. This could be <br />due to error or may be ascribed to gravelly subsoil 10 to 15 inches below the surface. <br /> <br />The following data is a summary of the research work undertaken on the behalf of the Surge <br />Demonstration Program. The data is hereby displayed numerically on a chart and on a graph for your <br />information: <br /> <br />Lower Gunnison Surge Demonstration Project. Page 13 <br />