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Seasonal evaluation of surge flow irrigation for corn
- Musick, J.T., Walker, J.D., Schneider, A.D., Pringle, F.B.
- Applied engineering in agriculture 1987 v.3 no.2 pp. 247
- Zea mays, furrow irrigation, runoff, water conservation, water management, Texas
- Surge flow irrigation of graded furrows was successfully managed under field conditions to change a conventional 12-h steady flow set, 400-m field length, to a 24-h set by using the same field water supply to irrigate a large area per set. The surge flow treatment resulted in reduced total water application during 7 irrigations from 1180 to 814 mm, reduced water intake from 992 to 733 mm, reduced tailwater runoff from 189 to 82 mm and reduced estimated deep profile wetting below the root zone from 101 to 36 mm on moderately permeable Olton clay loam. Surge flow reduced both seasonal water use and maize yields by 6% and did not affect seasonal water use efficiency for grain production. The surge flow effect on reducing water intake of a surface soil loosened by tillage (32%) was almost double the av. effect attained (17%) after consolidation of the surface soil by previous irrigation. The results indicate that surge flow irrigation can be managed successfully to reduce excessive water application in graded furrow systems.