Abstract

                                Irrigation may be defined as an artificial means for supply- ing water in the cultivation of crops. Certain crops such as millet, oilseed and cotton are cultivated in Madras State without provision for irrigation, though, however, these may produce better yields under conditions of irrigation. The need to assess irrigation potential, therefore, is of considerable importance. There are four main types of irrigation in Madras State viz., (i) Canals (ii) Tanks (iii) Wells and (iv) Springs.

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