Reply to your question can ...
Published by LOKESH PUNJ, A B.TECH. Agr Engg, PGDM-SPA IIMA (1977-9) 25 yrs in Water Piping / Irrigation/Infra Projects
Reply to your question can be given if one knows the Total Area, General slope, Water Source Location , Crop/Crops grown, Power source and availability per day basis.
Under all circumstances, in African Climatic Non-Coastal Conditions, it is best to opt for low pressure Sprinkling opting for medium size droplets so that evapo-transpiration losses are low to moderate. Friction drop should also be minimised so that recurring energy costs are low.