The potential maize and wheat yields under irrigation in central South Africa can vary based on factors like management practices, soil quality, and weather conditions. However, based on typical agricultural practices in the region:
-
Maize: The expected yield under irrigation is typically around 8 to 12 tons per hectare, although yields can go higher with optimal conditions and practices. Therefore, the answer would not correspond directly to the options given, but the most appropriate answer in that context might be around 15 tons per hectare (option d) as it falls within a reasonable yield range under good management practices.
-
Wheat: Under irrigation, yields in central South Africa can typically be in the range of about 4 to 8 tons per hectare, which aligns most closely with option b) 7-8 tons per hectare.
So, for the maize question, the closest option would be d) 15 ton per hectare, and for the wheat question, the most accurate option would be b) 7-8 tons per hectare.