Monthly Bulletin Web Page (Available in French and Dutch) The Belgian Crop Growth Monitoring System (B-CGMS) produces a monthly agrometeorological bulletin weather summary which provides information on the monthly meteorological situation, the state of the crop based on satellite information, crop phenology, and sub-national and national yield forecasts. The B-CGMS contributors are the University of Liège, the Walloon Agricultural Research Centre (CRA-W), and the Flemish Institute for Technological Research (VITO).