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<br />Farm 05 - <br /> <br />.') <br />to <br />~ <br />CC <br /> <br />Farm 06 - <br /> <br />Farm 07 - <br /> <br />The surge demonstration was set up in a fourteen <br />acre field growing silage corn. This was an <br />excellent site and the farmer was one of the best. <br />Only difficulty encountered was when the farmer <br />fertilized (injected ammonia gas), the water ran <br />very slowly in the gassed furrow as compared to <br />wheel furrow. The irrigator working for the owner <br />had the tendency to change sets in 24 hours as <br />before without realizing he was in fact covering <br />the area of two sets in surge. This resulted in <br />occassional under irrigation. <br /> <br />The field is irrigated from underground pipe which <br />delivers water from a series of alfalfa riser <br />valves. To cover the entire farm in surge the <br />farmer would require more valves, one for each <br />riser and only move the controller from set to <br />set. Irrigating by one surge unit, moving it from <br />riser to riser is inconvenient because the gated <br />pipe would require to be hooked and unhooked twice <br />in each irrigation. This will involve using more <br />labor compared to the capital investment for <br />valves~ Apart from this, the site is an excellent <br />one. <br /> <br />The demonstration plot in this farm had the <br />largest area under surge. The field consisted of <br />115 acres of alfalfa hay. The underground <br />pipeline and gated pipe system has been built <br />under salinity cost share. The field had a tile <br />drain put across the middle of the field recently, <br />making irrigation run difficult. The field did <br />not have good furrow markings. The soil type is <br />apishapa silty clay loam with a very low intake <br />rate. Reliable data collection was difficult. <br /> <br />The surge demonstration was set up in ported ditch <br />system using a surge gate mounted with a <br />controller. The demonstration field was 18 acres <br />of newly seeded alfalfa. The owner was exposed to <br />surge in the previous year and was deeply sold to <br />the idea of surge. He installed the ported ditch <br />system under salinity control cost share to be <br />able to practice surge. only drawback was that <br />the field system was already developed for surge <br />making it difficult to run a conventional set for <br />the sake of comparative data collection. Taking <br />away a set for conventional irrigation would mess <br />up subsequent sets in surge. This is an <br />excellent demonstration site. <br /> <br />A-2 <br />