Validation is an essential part of the model development process if models are to be
accepted and used in decision support systems. Validation ensures that the model meets its …

A plant disease model is a simplification of the relationships (between a patho-gen, a host
plant, and the environment) that determine whether and how an epi-demic develops over …

Data collected at weather stations are usually used to represent the environmental
conditions over the surrounding area (often in the order of 10s or 100s of km2), in spite of …

The monitoring of irrigation requirements at district or regional scale can be based on the
use of ecological process-based models and remote sensing data. The former simulates the …

Year-to-year fluctuations in weather causes large variations in crop yields. Uncertainty in
weather creates a risky environment for agricultural production. During the last decades the …

Initiatives such as Videotext and forecasting models resulted in a relatively fast introduction
of computer technology on to farms at the end of the 1980s. In several countries there were …

Simple Summary Designing early warning systems for threats to food crops in Africa must
respond to the needs of potential users of the system. This paper provides evidence from …

During the past decades, many new software tools were developed to be used for
agricultural research as well as for decision making. For example, crop and whole farm …

Decision support systems in plant protection need plausible and complete meteorological
data as the main input. While meteorological data are provided by the German …

Well calibrated and validated simulation models can be used in real time to assess farm
management practices in quantitative terms. An approach to predictive modeling is …