USDA - Agricultural Research Service

2 ARTICLES PUBLISHED IN JoVE

Environment

A Protocol for Conducting Rainfall Simulation to Study Soil Runoff

Leonard C. Kibet¹, Louis S. Saporito², Arthur L. Allen¹, Eric B. May³, Peter J. A. Kleinman², Fawzy M. Hashem¹, Ray B. Bryant²

¹Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, ²Pasture Systems and Watershed Management Research Unit, USDA - Agricultural Research Service, ³Department of Natural Sciences, University of Maryland Eastern Shore

A rainfall simulator was used to apply a consistent rate of uniform rainfall to packed soil boxes in a study of the fate and transport of urea, a nonpoint source environmental contaminant. Under uniform soil and rainfall conditions, antecedent soil moisture content exerted strong control over urea loss in surface runoff.

Environment

A Protocol for Collecting and Constructing Soil Core Lysimeters

Louis S. Saporito¹, Ray B. Bryant¹, Peter J. A. Kleinman¹

¹Pasture Systems and Watershed Management Research Unit, USDA - Agricultural Research Service

A detailed method for extraction and assembly of intact soil core lysimeters and their use for study of leachate and associated loss of nutrients from surface applied poultry litter is demonstrated.