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Figure 4


Fig. 4. Treatment means for P uptake, Year 1. Model equation: kg ha–1 = 7.034 + (NA x 0.02918) + (PA x 0.1529) + (NA x PA x 3.671 x 10–4) – (NA x NA x 4.18 x 10–5) – (PA x PA x 2.097 x 10–3), (n = 20, R2 = 0.98, s = 0.69).