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Fluid Journal : Winter 2016
percent resin P extractability for the APP treatment as compared to all other treatments. This observation was made on the Australian soil as well. The XANES data, combined with percent resin P, clearly showed the formation of Ca-P species negatively affected the potential plant availability. Overall, in the controlled laboratory experiment on the 3 calcareous soils it did appear the fluid P fertilizer was superior over the P granular in terms of enhanced movement away from the point of application and remained resin extractable. However, field studies on calcareous soils will be needed to gauge whether the laboratory results held up under scrutiny in the field and actually enhance or influence plant growth. Table 3. P XANES -Australia Soil Soil P species (%) Section 1: 0-7.5 mm Treatment pH Gaeth ite- Calcium Crandallite Alumina- Reduced Adsorbed P Phosphate Adsorbed P Chi-Square Control 8.70 -- 74.1 -- 25.9 0.004 MAP 8.23 -- 67.0 15.2 17.8 0.004 DAP 8.12 -- 70.3 -- 29.7 0.002 APP 7.72 10.6 55.6 -- 33.7 0.005 Joy Pierzynski is a Ph.D candidate and Dr. Ganga Hettiarachchi is an Associate Professor of Soil and Environmental Chemistry in the Department of Agronomy, Kansas State University, Manhattan, KS. Going on Twentv- Two Years 01 Archives! The Fluid Journal, flagship publication of the Fluid Fertilizer Foundation (FFF), makes over two decades of archives available on its web site. The magazine investigates and informs its readers on innovative uses of fluid fertilizers under varied cultural, pest control, and water management practices, focusing on evaluating: \. ............... RUict fi ertilt OU/)CIt et: 'atlon '- ----- . ., :-- :". ........ J . ... · the agronomics of fluid fertilizer in the production of maximum economic crop yields · application techniques for fluid fertilizers · the efficiencies and conveniences of fluid fertilizer systems · methods of controlling environmental problems with fluids. Since its formation, the FFF has funded over $3 million in fluid fertilizer research and accumulated thousands of pages of research data. The main goal of the Fluid Journal is to transfer this technical information into easy-to-read form to its farmers and dealers. The Fluid Journal also provides links to its articles on Twitter: http://www.twitter.com/fluidjournal For information on how to become a member of the FFF, contact the foundation's office at 785/776-0273 or the foundation's website: http://www.fluidfertilizer.com 9 The Fluid Journal Winter 2016