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Fluid Journal : Fluid Journal 2005-2007
Spring 2005 Fluid Journal 2 Dr. Stephen Loss is manager of field research with Wesfarmers CSBP Fertilizers in Kwinana, Western Australia. development of a UAN market in Western Australia. Future promising Since the commercialization of UAN in Western Australia in 2001 (marketed as Flexi-N), its early adoption has been rapid because of the advantages of storage, handling, and flexibility of application, more so than agronomic advantages. One of the practical advantages of UAN over urea is the uniformity of application with boomsprayer technology compared with topdressing urea with conventional dry spreading equipment. Boomsprayer applications of UAN are also considerably faster than topdressing urea. Most large boomsprayers are capable of covering a field in less than half (even maybe a quarter) of the time that it takes a dry fertilizer spreader to do the same job. In the past two years, adoption of UAN Figure 2. Grain protein of wheat fertilized using UAN compared with granular urea applied at the same N rate. Figure 3. Seed oil percentage of canola fertilizer using UAN compared with granular urea applied at the same N rate. applications with seeding equipment has also grown rapidly and will be an increasingly important aspect of UAN use in the future. UAN use is expected to continue increasing and it is estimated that within a few years it will represent a significant proportion of the fertilizer N market in Western Australia.
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