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Fluid Journal : Early Spring 2013
Dr. Longchamps is Post Doctoral research associate in the Laboratory of Precision Agriculture at Colorado State University; Dr. Khosla is Professor of Precision Agriculture; and Dr. Westfall is Professor Emeritus in the Department of Soil Sciences and Crop Sciences at Colorado State University. Figure 2: Boxplots of the difference in dry weights for 4 N rate treatments. The Fluid Journal, flagship publication of the Fluid Fertilizer Foundation (FFF), makes nearly 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: 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. Going on Twenty Years of Archives! 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 other treatments resulted in significantly different dry weights. The main outcome of these results is the fact that induced fluorescence, as measured by Multiplex®3, enabled the detection of N deficiency prior to V8 growth stage of corn (Figure 2). Both NBI_R and NBI_G enabled the distinction between the lowest N rate (0 kg/ha) and the highest N rate (225 kg/ha) from the V4 growth stage of corn. Previous studies have observed the potential of induced fluorescence to detect N deficiency. However, no paper in published literature has mentioned the potential for induced fluorescence to detect N deficiency at such early growth stages. Our results indicate that induced fluorescence is a promising approach to detect N deficiency in corn at early growth stages, opening new possibilities for the practical implementation of site-specific N management. These results were obtained in a greenhouse environment. Field experiments should be implemented to evaluate the potential of this technology in a corn field environment.
Late Spring 2013