Describe the merits and demerits of well and tubewell irrigation in india

Merits of well and tubewell irrigation are
<ul>
<li>It is an economical form of irrigation that can be adapted.</li>
<li>It is easy to implement.</li>
<li>Helps to increase the fertility of soil when water is used in fields because of the presence of nitrates.</li>
</ul>
Demerits of well and tubewell irrigation are:
<ul>
<li>Only limited area can be irrigated.</li>
<li>If well dries, whole system is wasted.</li>
<li>Cannot be implemented in areas with brackish groundwater.</li>
</ul>

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