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AE444, a 5-page illustrated fact sheet by Reza Ehsani, Arnold Schumann, and Masoud Salyani, describes this important site-specific management component of precision agriculture which provides economic benefits to growers while reducing the application of agrochemicals. Includes references. Published by the UF Department of Agricultural and Biological Engineering, January 2009.
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Miller, W. M., A. W. Schumann, J. D. Whitney, and S. Buchanon. 2003. VRT citrus test plot applications of granular fertilizer. ASABE Paper No. 031127. St. Joseph, Mich.: ASABE.
Ping, J.L., R.B. Ferguson, and A. Dobermann. 2008. Site-specific nitrogen and plant density management in irrigated maize. Agron. J. 100:1193-1204. https://doi.org/10.2134/agronj2007.0174
Sevier, Brian J. and Won Suk Lee. 2005. Precision Farming Adoption in Florida Citrus: A Grower Case Study. ASABE Paper no.: 051054. St. Joseph, Mich.: ASABE
Schumann, A.W., W.M. Miller, H.K. Hostler, S. Buchanon, and S. Cugati. 2005. Nutrient Placement Using Variable Rate Technology (VRT). UF/IFAS Citrus Nutrient BMP Program. http://citrusbmp.ifas.ufl.edu/Workshop%20Presentations/2005%20BMP%20meetings_Shumann.pdf
Schumann, A.W., H.K. Hostler, S.M. Buchanon, and Q. Zaman. 2006. Relating citrus canopy size and yield to precision fertilization. Proceedings of the Florida State Horticultural Society 119(2007). 9 pp.
Schumann, A.W., W.M. Miller, S.A. Cugati, H.K. Hostler and S.M. Buchanon. 2006. Optimizing variable rate granular fertilizer spreader performance for single-tree prescription zones. American Society of Agricultural and Biological Engineers Annual International Meeting, July 2006. Paper No. 061073. St. Joseph, Mich.: ASABE. 13 pp.
Schumann, A.W., W.M. Miller, Q.U. Zaman, K.H. Hostler, S. Buchanon, and S. Cugati. 2006. Variable rate granular fertilization of citrus groves: spreader performance with single-tree prescription zones. Applied Engineering in Agriculture 22(1): 19-24. https://doi.org/10.13031/2013.20183
Tumbo S. D., M. Salyani, W. M. Miller, R. Sweeb, S. Buchanon. 2007. Evaluation of a Variable Rate Controller for Aldicarb Application around Buffer Zones in Citrus Groves. Computers and Electronics in Agriculture, Vol. 56(2):147-160. https://doi.org/10.1016/j.compag.2007.01.010
Zaman, Q., A.W. Schumann, and S. Shibusawa. 2006. Impact of variable rate fertilization on nitrate leaching in a citrus orchard. 8th International Conference on Precision Agriculture, Minneapolis, Mn. 15 pp.