(a) State five factors that should be considered in choosing an irrigation system in West Africa. (b) Mention four problems associated with irrigation in We...

(a) State five factors that should be considered in choosing an irrigation system in West Africa.

(b) Mention four problems associated with irrigation in West Africa

(c) A rectangle-shaped farmland has a length of 0.4 km and a breadth of 2,400 m, calculate the area of the farmland in hectares

(d) List one primary and three secondary tillage implements