Data on crop types and field extents were obtained from DAFF for central provinces (Free State, Gauteng, Mpumalanga, North West). These were combined into a single data set after normalising the crop
Using daily weather data for the period 1996–2005 as the inputs to a rule-based model, we derive calendars for maize, rice, winter and spring wheat and soybeans around the year 2000 with a spatial res
Fragment scoring matrix (presence = 1, light green; absence = 0) of Amplified Fragment Length Polymorphism (AFLP) data. Only fragments positive in duplicate runs were scored as present. Results of ana
