Modeling soil water-plant relationships in the cerrado soils of Brasil: the case of maize (Zea mays L.).

A soil-water balance simulation model developed for the Cerrado soils of central Brazil is presented. The model calculates daily soil water evaporation, plant transpiration and soil-water balance for fourteen soil layers of 15 mm each. The model includes a subroutine to calculated capillary water movement. Computer simulations of daily soil water levels at five soil depths (15, 30, 45, 60 and 90 cm) for a field of maize are compared with actual field measurements over an-8--day period. Results indicated that the developed model can, in general, estimate the soil-water balance of the various depths within +/- 10% of actual measurements.Made available in DSpace on 2017-06-06T23:47:31Z (GMT). No. of bitstreams: 1 Modellingsoil.pdf: 6538984 bytes, checksum: b17f36599092dabee80631c9870c203f (MD5) Previous issue date: 1997-07-07198