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== परिचयः ॥ Introduction ==

== परिचयः ॥ Introduction ==

Water is essential for the growth of crops. Rain water is the first and the foremost source of water supply. But, in many cases it is either insufficient or irregular or not available at the proper time. Rain water has to be supplemented by man-made devices of supplying water. Even in the case of other natural sources of water, such as rivers, streams, lakes and ponds, human effort is required to carry or direct water to the field. Thus, irrigation falls into two clear categories, natural and artificial.<ref name=":1">Bag, A. K. (1997) ''History of Technology in India, Vol. 1, From Antiquity to c. 1200 A.D.'' New Delhi: Indian National Science Academy. (Pages 417 - 432)</ref>

Water is essential for the growth of crops. Rain water is the first and the foremost source of water supply. But, in many cases it is either insufficient or irregular or not available at the proper time. Rain water has to be supplemented by man-made devices of supplying water. Even in the case of other natural sources of water, such as rivers, streams, lakes and ponds, human effort is required to carry or direct water to the field. Thus, irrigation falls into two clear categories, natural and artificial.<ref name=":1">Gopal, Lallanji (1997) ''History of Technology in India, Vol. 1, From Antiquity to c. 1200 A.D.'' New Delhi: Indian National Science Academy. (Chapter Agriculture : Pages 417 - 432)</ref>

Rshi Parashara starts his exposition with the discussion of Vrshti or rains because<blockquote>वृष्टिमूला कृषिः सर्वा वृष्टिमूलं च जीवनम् । तस्मादादौ प्रयत्नेन वृष्टिज्ञानं समाचरेत् ॥ (१०.३) (Krsh. Para. 10.3)<ref>Krshi Parashara ([https://sa.wikisource.org/wiki/%E0%A4%95%E0%A5%83%E0%A4%B7%E0%A4%BF%E0%A4%AA%E0%A4%B0%E0%A4%BE%E0%A4%B6%E0%A4%B0%E0%A4%AE%E0%A5%8D?wprov=srpw1_0 Full Text])</ref></blockquote>On rain is dependent agriculture it is the life source of all beings. Hence the knowledge of rains has to be first obtained.  

Rshi Parashara starts his exposition with the discussion of Vrshti or rains because<blockquote>वृष्टिमूला कृषिः सर्वा वृष्टिमूलं च जीवनम् । तस्मादादौ प्रयत्नेन वृष्टिज्ञानं समाचरेत् ॥ (१०.३) (Krsh. Para. 10.3)<ref>Krshi Parashara ([https://sa.wikisource.org/wiki/%E0%A4%95%E0%A5%83%E0%A4%B7%E0%A4%BF%E0%A4%AA%E0%A4%B0%E0%A4%BE%E0%A4%B6%E0%A4%B0%E0%A4%AE%E0%A5%8D?wprov=srpw1_0 Full Text])</ref></blockquote>On rain is dependent agriculture it is the life source of all beings. Hence the knowledge of rains has to be first obtained.