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A Point-Source Method for Rapid Simultaneous Estimation of Soil Hydraulic and Chemical Transport Properties

^a Dep. of Agronomy, Iowa State Univ., Ames, IA 50011
^b USDA-ARS, National Soil Tilth Lab., 2150 Pammel Dr., Ames, IA 50011

View larger version (19K): [in a new window]   Fig. 1. Experimental setup for the point-source method showing the ponded areas on the soil surface.

View larger version (21K): [in a new window]   Fig. 2. Flux density versus 1/ro for all observation sites from the point-source method.

View larger version (22K): [in a new window]   Fig. 3. Resident concentrations vs. application times for all observation sites from the point-source method.