Table 1.
The trash management, N fertilizer rate, soil type, and climate variables applied in model scenarios.
| Factor | Description |
|---|---|
| Climate | Babinda1 (weather station 31004; 17.34°S, 145.92°E) Mulgrave1 (weather station 31089; 17.09°S, 145.79°E) |
| Soil | Hydrosol (HS)2 (1.0% C, 0.00–0.15 m) Ferrosol (FS)2 (2.3% C, 0.00–0.15 m) High C and N Ferrosol (‘HighCN Ferrosol’; 2.9% C, 0.00–0.15 m) Low C and N Ferrosol (‘LowCN Ferrosol’; 1.7% C, 0.00–0.15 m) |
| Trash | Trash retained on the soil surface Incorporated by mixing 50% of trash into the 0.00–0.20 m soil layer Burning 70% of trash post-harvest |
| N Fertilizer | Eight rates from 40 to 320 kg urea-N ha–1 in 40 kg N ha–1 increments applied to ratoon crops/75% of this rate applied to plant crops, i.e., 30/40 to 240/320. |