Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

Furrow torpedoes improve irrigation water advance

Authors

Lawrence J. Schwankl
Blaine R. Hanson
Anthanasios Panoras

Authors Affiliations

L. J. Schwankl is Extension Specialists, Department of Land, Air and Water Resources, UC Davis; B. R. Hanson is Extension Specialists, Department of Land, Air and Water Resources, UC Davis; A. Panoras is Irrigation Specialist, Land Reclamation Institute, Greece.

Publication Information

Hilgardia 46(6):15-17. DOI:10.3733/ca.v046n06p15. November 1992.

PDF of full article, Cite this article

Abstract

To increase irrigation uniformity and to reduce drainage volumes, some San Joaquin Valley growers drag weighted steel cylinders (torpedoes) in furrows before irrigation to speed the advance of water across the field. The effectiveness of this practice and the reasons it works have been investigated.

At one site, torpedoing reduced the furrow's steady-state water infiltration rate. A similar phenomenon was not observed at the other two sites investigated. An increase in the irrigation advance rate of torpedoed furrows, ranging from 15 to 30%, was noted at each site evaluated. Torpedoed, nonwheel furrows had water advance characteristics similar to wheel furrows. Torpedoing nonwheel furrows therefore resulted in more equal water advance rates among furrows.

Schwankl L, Hanson B, Panoras A. 1992. Furrow torpedoes improve irrigation water advance. Hilgardia 46(6):15-17. DOI:10.3733/ca.v046n06p15
Webmaster Email: wsuckow@ucanr.edu