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An Improved Variable-Intensity Sprinkling Infiltrometer¹

ABSTRACT

Improvements of the Purdue-Wisconsin infiltrometer are described. A winch was added to the tower to facilitate assembly and the windshield was redesigned. Water distribution was improved by changes in the revolving shutter and the surplus water collection trough. The nozzle mounting was simplified, and water level in the vacuum runoff tank was transmitted to an external recorder. Good uniformity was obtained over a wide range of application rates.

¹ Contribution from the Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel. This work is part of the Project FG-IS-274, A10-SWC-75, supported by the USDA under the provisions of P.L. 480.

² Senior Lecturer, Soil Physics Technician, and Associate Professor, respectively, Department of Soil Science, The Hebrew University of Jerusalem.

Received for publication September 29, 1971. Accepted for publication January 4, 1972.