Ion-Exchange Resins for Estimating Potassium Availability in Production Agriculture.
Tuesday, November 5, 2013: 2:10 PM
Marriott Tampa Waterside, Room 5 and 6, Second Level
Catherine White, Winfield Solutions, Urbana, IL, Robert H. Beck, Winfield Solutions, LLC, Chatham, IL, Randall E. Brown, Winfield Solutions, Kearney, NE and Timothy Eyrich, WinField Solutions, Alliance, NE
Ion-exchange resins have been used in turf and environmental settings for many years with little exposure in production agriculture. In 2010, 54% of corn (Zea maize L.) tissue samples collected using the NutriSolutions™ Tool reported below-adequate potassium status. These results led WinField™ to begin to examine ion-exchange resin capsules (IERC) from UNIBEST International as another tool to better understand in-season potassium availability. WinField™ has conducted field trials since 2011 utilizing NutriVision™ IERCs, along with NutriSolutions™ tissue samples and soil sample analysis, to monitor and attempt to improve potassium availability, most specifically in corn production areas. In 2013, more than 100 on-farm trials will be completed.
