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<br /> '<I" <br /> l. .., <br />. C'.J <br /> ...... <br /> -.- , <br /> (.) <br /> <br />M11, When this field was conventionally irrigated the run was split in tl1e <br />middle but was successfully irrigated in one run when surge irrigated. Fewer <br />side by side comparisons were possible in the orchards. <br /> <br />4) Cooperative Extension and Soil Conservation Service personnel have <br />actively promoted irrigation water management concepts by personal visits <br />with water users, newsletter articles. workshops. and demonstrations. <br /> <br />The values listed in the table may be Questionably low, The numbers may best be <br />used to identify trends that are apparent. During each of the years there is a > 3: 1 <br />advantage to the surge system applications. Each year there is less deep <br />percolation from either system than during the previous year. These trends <br />indicate improved irrigation water management by the cooperators. Cooperators <br />have also been warned of potential salt build up if adequate leaching water is not <br />used. It is suggested they take soil samples on an annual basis for salinity analysis <br />to be aware of any salt build up in their irrigated fields. <br /> <br />TILLAGE and SURGE: <br /> <br />The bean field on farm E303 was divided into conventional tillage and conservation <br />tillage sectors. In addition to surge and conventional irrigation, evaluations were <br />made of wheel track and non-wheel track furrow flows. <br /> <br />Sediment content of run off waters were made from this field using Imhoff cones, <br />conventional irrigation. <br /> Furrow Deep <br />T i llaqe ~ Inflow outflow Infiltrated Dercolation <br />Cony. wheel 34.4 10.9 23.7 2.7 <br />Cony. non-wheel 38.0 8.2 29.8 9.0 <br />Cons. wheel 35.8 21.8 14.0 -6.9 <br />Cons. non-wheel 35.1 16.3 18.8 -0.9 <br />Surqe irriqation <br /> Furrow Deep <br />Tillaqe ~ Inflow Outflow Infiltrated Dercolation <br />Cony. wheel 21.3 7.7 13.6 -7.8 <br />Cony. non-wheel 19.8 3.9 16.0 -4.5 <br />Cons. wheel 23.7 6.6 17.0 -4.4 <br />Cons. non-wheel 20.9 7.5 13 .4 -8.0 <br /> <br />All of the above units are in acre inches per acre. All set times were all 12 hours. <br />This reflects the less water applied to the surge sets where the water was divided <br />into the two surged sets in the 12 hour period. <br /> <br />It is interesting to note that more runoff and less infiltration occurred on the <br />conservation tillage side of the conventionally irrigated portion of the field than on <br />the conventionally tilled portion. One would have expected the opposite to occur <br /> <br />7 <br />