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Published in Soil Sci Soc Am J 24:319-322 (1960)
© 1960 Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Use of the Rainulator for Runoff Plot Research1

L. Donald. Meyer2

ABSTRACT

The portable rainfall simulator, known as the rainulator, which has been recently developed at Lafayette, Indiana, was designed for use as a research tool to aid in more rapidly evaluating factors that influence erosion, runoff, and infiltration. Intensities of 21/2 or 5 inches per hour with near the kinetic energy of natural rainfall at these intensities are produced. Other characteristics which are desirable for runoff and erosion research on rectangular field plots are embodied in the design. The number and length of plots to which simulated rainfall may be applied simultaneously may be varied by varying the number of units used.

The rainulator will be used primarily for obtaining comparative evaluations of various topographic, soil, water, crop, and management factors under field plot conditions. Numerous factors are well suited to study by this method. The types of comparisons and evaluations which are and are not well adapted to study on rectangular field plots in general and specifically with the rainulator are also discussed.

NOTES

1 Joint contribution of the Soil and Water Conservation Research Division, ARS, USDA, and the Purdue Agr. Exp. Sta., Journal Series Paper No. 1439. Presented before Div. VI, Soil Science Society of America, Aug. 7, 1958, Lafayette, Ind.

2 Agricultural Engineer, Soil and Water Conservation Research Division, ARS, USDA, Purdue University, Lafayette, Indiana.

Received for publication July 27, 1959. Accepted for publication April 19, 1960.






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