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SL345: Fertilizer Experimentation, Data Analyses, and Interpretation for Developing Fertilization Recommendations — Examples with Vegetable Crop Research

Figure 4. The Logistic model. Yield (tons/acre) = 25/((1 + exp (1.12 – 0.0242N)). 90% maximum (25 tons/acre) yield (22.5 tons/acre) occurs with 137 lbs/acre N. 95% maximum yield (23.8 tons/acre) occurs at 168 lbs/acre N.