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Fluid Journal : Fall 2012
Fall 2012 The Fluid Journal 12 Figure 2. Effect of starter fertilizer application on tissue nutrient concentration in corn compared to the control. Asterisk (*) indicate statistically significant difference from zero at p ≤ 0.05. Letters indicate statistically significant difference between treatments at p ≤ 0.05 more intensive cropping practices, as well as high-yielding-potential crops, may also require additional micronutrients for optimum yield. Supplementary foliar application of nitrogen (N), P, and K and micronutrients can help to enhance crop yields under these conditions. Consequently, there is an increasing interest from producers about the potential benefits of foliar application of nutrients as a complement to their fertilization programs to maximize yields. Overall goal The overall objective of this study was to evaluate crop response to starter fluid fertilizers in combination with foliar application of macro - and micronutrients to maximize corn and soybean yields. Specific objectives included: • Assessment of corn and soybean grain yield and early growth response to starter application of fluid fertilizers • Compare responses with and without additional foliar fertilizers • Evaluate plant nutrient analysis as a diagnostic tool to explain responses to foliar and starter macro, and micro-nutrient applications. Methodology Target. Studies were subject to high-yield potential, irrigated conditions. Plots. Field studies consisted of small-plot field research of four tosixrowswideby35to50feetin length. Treatments. Macronutrient treatments included NPK. The micronutrient mix (micros) included iron (Fe), Mn, Zn, B, and Cu. Three starter treatments (none, NPK only, and NPK + micros) were combined with three foliar treatments (none, NPK only, and NPK + micros) for a total of nine treatment combinations. Fertilizer used for starter application was a 4-10-10 formulation. Zinc, Cu
Late Spring 2012