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ARS Home » Midwest Area » Ames, Iowa » National Laboratory for Agriculture and The Environment » Agroecosystems Management Research » Research » Publications at this Location » Publication #251726

Title: Incremental soil sampling root water uptake, or be great through others

item Logsdon, Sally

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/4/2010
Publication Date: 11/4/2010
Citation: Logsdon, S.D. 2010. Incremental Soil Sampling Root Water Uptake, or Be Great Through Others. American Society of Agronomy Annual Meetings [abstracts]. ASA-CSSA-SSSA Annual Meeting, Oct. 31 - Nov. 4, 2010, Long Beach, CA. CDROM.

Interpretive Summary:

Technical Abstract: Ray Allmaras pursued several research topics in relation to residue and tillage research. He looked for new tools to help explain soil responses to tillage, including disk permeameters and image analysis. The incremental sampler developed by Pikul and Allmaras allowed small-depth increment, volumetric soil sampling, which was used to show depth distributions of soil density, residue, weed seed, even plant pathogens in response to different tillage management systems. Several aspects of his work influenced my research. Dr. Allmaras conducted some early studies that showed a large fraction of transpired soil water came from water moving up from the water table into the root zone, which I have recently quantified more precisely with the new soil water monitoring tools available today. The volumetric incremental sampler has been a valuable tool in my research to determine incremental soil density and water content. Ray Allmaras wanted to answer important soil management questions using modern techniques, even if his mentees received most of the credit.