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Field Extraction of Large Intact Soil Cores for Leaching Studies in the Laboratory

Published online by Cambridge University Press:  12 June 2017

She-Kong Chong
Affiliation:
Plant and Soil Sci. Dep., Southern Illinois Univ., Carbondale, IL 62901
Suling Zhao
Affiliation:
Plant and Soil Sci. Dep., Southern Illinois Univ., Carbondale, IL 62901
Brian P. Klubek
Affiliation:
Plant and Soil Sci. Dep., Southern Illinois Univ., Carbondale, IL 62901

Abstract

Various samplers have been developed for taking intact soil cores. Very often, the sampler was used once or twice to take only a few soil cores then it became either obsolete or a burden for maintenance and storage. An economic portable hand-operated soil core sampler was developed to obtain large soil cores with a diameter of 19 cm and a length of 120 cm. The quality of large soil cores was evaluated and compared with that obtained from short cores from each soil horizon. In addition, the large intact column was used to evaluate atrazine transport under the saturated condition. Results showed that the hydraulic conductivity of the large cores were of the same magnitude as that of short cores, except for the A horizon; the hydraulic conductivity of the large cores was about 10 times greater than the short cores. Even though the sampling procedure is labor intensive, the soil sampler has the flexibility to collect different size soil cores and can be constructed at a very low cost (less than $200 including labor). Lastly, the sampler is maintenance free and can be stored easily in a limited space.

Type
Symposium
Copyright
Copyright © 1996 by the Weed Science Society of America 

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