Fertilizer Additions

Fertilizer addition can be either fixed amounts (FERAMT(*), fert.100) or calculated automatically (AUFERT ≠ 0.0, fert.100) according to the crop requirements. The automatic option can be set to maintain crop growth at a particular fraction of potential production with the minimum nutrient concentration (0.0 < AUFERT ≤ 1.0) or to maintain maximum production with plant nutrient concentrations at a nominated level between the minimum and maximum for that growth stage (1.0 < AUFERT ≤ 2.0).

Organic matter additions are specified in the Organic Matter Addition Parameters.