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Fluid Journal : Winter 2012
Dr. Hettiarachchi is an Assistant Professor, Dr. Mengel is a Professor, and Mr. Khatiwada is a graduate Research Assistant in the Department of Agronomy at Kansas State University, Manhattan, Kansas. Figure 1. Resin extractable P (as a % of total P) in soil sections at different distances from the point of fertilizer application. Error bars represent standard errors of (A) five weeks broadcast, (B) Five weeks deep-band, (C) Six months broadcast, and (D) Six months deep-band treatments. Granular = MAP; Liquid =TGMAP. can also be responsible for restricting P solubility in slightly acidic, neutral, or alkaline soils. Conclusions It appears that when liquid MAP is deep-placed in no-till soil systems, more P remains in resin extractable P forms for six months after fertilizer application. In contrast, broadcasted P, either in granular or in liquid form, tended to transform into less extractable P forms after five-week or six-month time periods. Formation of Fe-, Al-, and/or Ca-P solid species, with different solubility, may have been the reason for the observed differences in extractability or potential availability of P between broadcast and deep-placed granular and liquid MAP evaluated in this study. 2012 FLUID FORUM February 19-21, 2012 Scottsdale Plaza Resort Scottsdale, AZ Sponsored by Fluid Fertilizer Foundation The Forum program always provides cutting edge topics of broad interest as well as reports on all Foundation research projects. Come and get the edge on the competition with new information that can be directly applied to the marketing of your products! The FLUID FORUM is THE LATE WINTER GATHERING for leaders in the fluid industry with a program FOCUSED ON FLUIDS and their efficient and profitable use. It is a great opportunity to network with internationally recognized researchers, manufacturers, distributors and dealers. The Premiere National Educational Meeting of the Fertilizer Industry Call 785-776-0273 or email fluidfertilzer@ sbcglobal.net
Early Spring 2012