Knowing when plants capture phosphorus
Luis Pons, USDA Agricultural Research, Jan, 2003
ARS research into how and when plants use the phosphorus in manure may aid farmers as they try to stem nutrient runoff into waterways.
"A future challenge," says soil scientist Thomas J. Sauer, "will be not only to avoid over-application of phosphorus to soil, but also to ensure that in doing so a farmer does not make the land phosphorus deficient."
Sauer and soil scientist John L. Kovar focus on phosphorus as they study nutrient management of animal manure at ARS' National Soil Tilth Laboratory in Ames, Iowa.
This research is part of Water and Quality Management, an ARS National Program (#201) described on the World Wide Web at http://www.nps.ars.usda.gov.
Thomas J. Sauer and John L. Kovar are with the USDA-ARS National Soil Tilth Laboratory, 2150 Pammel Drive, Ames, IA 50011-4420; phone (515)294-3416 [Sauer], (515)294-3419 [Kovar], fax (515) 294-8125, e-mail sauer@nstl.gov.kovar@nstl.gov.

True Value of Carbon in Agricultural Soils
Hatfield, J.L. 2007. True Value of Carbon in Agricultural Soils [CD-ROM]. South Dakota No Till Association Annual Conference.
Technical Abstract:

Research Project: Biogeochemical Processes Influencing Formation and Stabilization of Soil Organic Matter and Soil Structure
National Soil Tilth Laboratory, USDA Agricultural Research Service, Ames, IA
Location: Soil and Water Quality Research
Project Number: 3625-11120-003-00
Project Type: Appropriated
Start Date: Apr 25, 2006
End Date: Apr 24, 2011
Objective: