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Dye tracers aid rice chemical residue studies

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Authors

K. K. Tanji, Water Science and Specialist
M. Mehran, Research Water Scientist
J. W. Biggar, Water Science and Water Scientist
D. W. Henderson, Water Science and Irrigationist, University of California

Publication Information

California Agriculture 27(7):10-13.

Published July 01, 1973

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Abstract

Small-scale rectangular plots at Davis are being used to determine how long chemicals applied in rice fields persist in flood and seepage waters, where the chemical residues go, and how fast they get there. This article presents data from some dye tracer experiments using two chemical application techniques (uniform application on the water surface and slug injection at the point of water inflow) and three water management practices (static, flow-through, and recycled systems). The distribution, persistence, and movement of a rhodamine dye tracer in flood waters was found to be greatly affected by these different water management systems.

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Author notes

D. T. Bradley, Superintendent of Cultivations; M. Ashkar and M. Iqbal, Staff Research Associates; and I. Martin and J. Corry, Jr., Laboratory Helpers also assisted on this investigation. This project is being supported by the California Rice Research Foundation.

Dye tracers aid rice chemical residue studies

K. K. Tanji, M. Mehran, J. W. Biggar, D. W. Henderson
Webmaster Email: wsuckow@ucanr.edu

Dye tracers aid rice chemical residue studies

Share using any of the popular social networks Share by sending an email Print article
Share using any of the popular social networks Share by sending an email Print article

Authors

K. K. Tanji, Water Science and Specialist
M. Mehran, Research Water Scientist
J. W. Biggar, Water Science and Water Scientist
D. W. Henderson, Water Science and Irrigationist, University of California

Publication Information

California Agriculture 27(7):10-13.

Published July 01, 1973

PDF  |  Citation  |  Permissions

Author Affiliations show

Abstract

Small-scale rectangular plots at Davis are being used to determine how long chemicals applied in rice fields persist in flood and seepage waters, where the chemical residues go, and how fast they get there. This article presents data from some dye tracer experiments using two chemical application techniques (uniform application on the water surface and slug injection at the point of water inflow) and three water management practices (static, flow-through, and recycled systems). The distribution, persistence, and movement of a rhodamine dye tracer in flood waters was found to be greatly affected by these different water management systems.

Full text

Full text is available in PDF.

Author notes

D. T. Bradley, Superintendent of Cultivations; M. Ashkar and M. Iqbal, Staff Research Associates; and I. Martin and J. Corry, Jr., Laboratory Helpers also assisted on this investigation. This project is being supported by the California Rice Research Foundation.


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