Select the method(s) of irrigation which can be employed in an uneven land.
(i) Moat
(ii) Sprinkler
(iii) Chain Pump
(iv) Drip System
(ii) and (iv)
Traditional methods of irrigation, such as moat and chain pump, are useful only in plains where the terrain aids the flow of water into the fields. However, both sprinkler and drip system of irrigation are very efficient even in an uneven land.