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Fluid Journal : Winter 2011
MAXIMIZE PROFITS Root Growth Stimulator is a synergistic formulation of zinc and ammonium acetate that stimulates the plant to generate a greater volume of healthier roots. The result is a plant with more vigor and greater stress tolerance that produces higher yields and higher profits. Dr. Walters, in memoriam, was Professor of Soil Science, Dr. Tri Setiyono is Postdoctoral Associate, and Dr. Cassman is Heuremann Professor of Agronomy at the University of Nebraska; Dr. Yang is at Monsanto Company, and Dr. Dobermann is at the International Rice Research Institute. learn more at: www.nulex.com Visit your Nulex Distributor or contact a sales representative at 800-831-4815 07 The Fluid Journal Winter 2011 EONR was overestimated and four sites where EONR was underestimated. In the case of these sites, the N uptake and yield relationship did not fall on the standard QUEFTS spherical N uptake response function (Figure 2). In each of these simulations, the yield potential estimates were made from Hybrid-Maize simulations of Yp. Use of site-specific, user-specified Ya (an option in Maize-N) might have resulted in a more precise estimate of the (Ya-Y0) delta yield used to calculate N need. Citations: Cassman, K., G. Gines, M. Dizon, M. Samson, and J. Alcantara, 1996. Nitrogen-use efficiency, tropical lowland rice systems: contributions from indigenous and applied nitrogen. Field Crops Research 47:1-12. Janssen, B., F. Guiking, D. van der Eijk, E. Smalling, J. Wolf, and H. van Reuler, 1990. A system for quantitative evaluation of fertility of tropical s oils (quetfs). Geoderma 46:299-318. Setiyono, T., D. Walters, K. Cassman, G. Witt, and A. Dobermann, 2010. Estimating maize nutrient uptake requirements. Field Crop Res. 118:158-168. Yang H., A. Dobermann, J. Lindquist, D. Walters, T. Arkebauer and K. Cassman, 2004. Hybrid-maize -- a maize simulation model that combines two cropmodeling approaches. Field Crop Res. 87:131-154. Yang H., B. Janssen, 2000. A mono-component model of carbon mineralization with a dynamic rate constant. European Journal of Soil Science 51:517-529.
Early Spring 2011