Project Number: 6206-13610-006-34
Project Type: Reimbursable

Start Date: Oct 01, 2008
End Date: Sep 30, 2011

Objective:
1) Demonstrate an enhanced soil test method that accounts for plant available N sources in the soil, which represent "free" N to producers. 2) Demonstrate the potential for increased producer profitability when basing fertilizer recommendations on this soil test method. 3) Improve fertilizer efficiency by considering all sources of plant available N in the soil.

Approach:
1) Conduct field trials on demonstration sites at the USDA-ARS Grassland Soil and Water Research Center, Temple, TX. 2) Conduct field trials on demonstration sites at the USDA-ARS Watersheds, Riesel, TX. 3) Establish control sites on private lands across Texas. 4) Conduct soil tests to estimate plant available N at all demonstration sites. 5) Demonstrate the environmental impacts of alternative fertilizer N recommendations on demonstration sites at the USDA-ARS Watersheds, Riesel, TX. 6) Conduct outreach activities that reach both producers and the scientific community. 7) Manage project resources and reporting requirements.