Modification of the CERES grain sorghum model to simulate optimum sweet sorghum rooting depth for rainfed production on coarse textured soils in a sub-tropical environment
The DSSAT-CERES sorghum model was adapted for simulations of sweet sorghum optimal rooting depth for rainfed production. Optimal rooting depth was between 110 and 140 cm. Early planting required deeper rooting because of less frequent precipitation. Optimal rooting resulted in 25–32% less irrigation.