Figure 2

Sugarcane yields (a, b; Mg ha⁻¹) and total N uptake (c, d; kg ha⁻¹) in response to annual N rates (control; 60; 120; and 180 kg ha⁻¹ N) applied in four consecutive ratoons (1st; 2nd; 3rd; and 4th ratoon). Regression equations (P ≤ 0.05) were fit to the response to N rates. Bars indicate mean standard deviation.