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Tractor wheel compaction of wide-spaced irrigated furrows for reducing water application
- Musick, J.T., Pringle, F.B.
- Applied engineering in agriculture 1986 v.2 no.2 pp. 123
- furrow irrigation, tractors, wheel tracks, soil compaction, furrows, infiltration (hydrology), irrigation management, irrigation requirement, drainage, grain yield, corn, Zea mays, Texas
- A 2-yr field study of irrigated corn was conducted on Olton clay loam near Friona, TX, to evaluate the use of tractor-wheel compaction of irrigated furrows in reducing excessive water intake and profile drainage. Four seasonal irrigations were evaluated in 1982 and seven in 1983. In 1983, a management option was tested in which the fourth and fifth seasonal irrigations in the HARD furrow treatment were switched to SOFT furrows for 'catch up' and to meet water requirements during a high evaporative demand period. HARD furrows reduced water advanced time for 400-m field length by 48%, water intake by 33%, and estimated profile drainage by about one-half without affecting grain yields. In the 1983 test, utilizing a system of alternating SOFT and HARD furrows permitted flexibility in managing irrigation water intake to meet conditions of varied evaporative demand and profile storage needs.