Knowledge of crop abiotic and biotic stress is important for optimal irrigation management. While spectral reflectance and infrared thermometry provide a means to quantify crop stress remotely, these measurements can be cumbersome. Computer vision offers an inexpensive way to remotely detect crop stress independent of vegetation cover. This paper presents a technique using computer vision to de...

ncutron probe use in the Lowveld is repor-ted. This assessAs part of a watcr management project initiated by the Zimbabwe Sugar Association Experiment Station (ZSAES), three large sugar estates and the ZSAES have imported a commercially available irrigation scheduling package which is based on neutron probe measurements of soil water. Analysis of selected data collected using the package highli...

The problem of fixed-profile load scheduling is considered for large-scale irrigation channels. Based on the analysis of the special structure of a channel under decentralised control, a predictive model is built on a pool-by-pool basis and a decomposition strategy of the scheduling problem is provided. The decomposition avoids excessive memory requirements in building the predictive model of t...