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Fluid Journal : Winter 2015
18 The Fluid Journal Winter 2015 Figure 3: Potassium (A), phosphorus (B), nitrate (C) and sulfur (D) concentrations at TAREC. The deep placement (100%) program did produce significantly higher leaf N than the unfertilized control (data not shown). Differences in leaf N between nutrient management systems during the first week of bloom indicate that deep placement of preplant N with strip-tillage significantly limits the availability of N up to the first week of bloom. Differences in leaf P were observed only during the fifth week of bloom at TAREC and reinforce the petiole results as the unfertilized control had significantly higher leaf P than the broadcast and starter agronomic control treatments (data not shown). The overall ANOVA was significant for leaf K at = 0.1 level. However, the Tukey-Kramer HSD procedure did not separate the nutrient management systems as being significantly different (data not shown). Leaf S concentrations differed at TAREC during the first week of bloom with the unfertilized control having significantly lower S concentration than the fertilized