Mention the objectives of Protective irrigation and productive irrigation.
(i)Protective irrigation: The objective of protective irrigation is to protect the crops from adverse effects of soil moisture deficiency which often means that irrigation acts as a supplementary source of water over and above the rainfall.
The strategy of this kind of irrigation is to provide soil moisture to maximum possible area.
(ii)Productive irrigation: It is meant to provide sufficient soil moisture in the cropping season to achieve high productivity.
In such irrigation the water input per unit area of cultivated land is higher than protective irrigation.