Your question is not clear. One of the most discussed ways to use solar energy in combination with water is its desalination.

If we want to wet the field by using water, with the help of electricity and motor we will leave water into fields. My question is instead of electric we can use solar technique to wet the field. I am asking in what way we can use solar instead of electricity

Ok, I've understood. Some time ago I asked the similar question to the staff of the http://www.conrad.com/ . My idea was to combine a photoelectric panel for generating electricity and pumping water from the deep well in order to wet fields in the places where electricity is not available. They answered that all components (special pump, convertors and photoelectric panel) are available at Conrad, but you should build by yourself a corresponding autonomous system. Other options they were not able to suggest. It would be nice to hear here about other possibilities.

are their any related papers on How can we use water in the agricultural fields with the help of solar energy instead of electricity? i.e with the help of solar panels

Please refer to

http://www.bp.com/liveassets/bp_internet/solar/bp_solar_australia/STAGING/local_assets/downloads_pdfs/a/Aust_ps_solar_SAWMP.pdf

Please refer to this also

http://www.agridept.gov.lk/images/stories/site/asda/ASDA2010/4_sisira_kumara.pdf

The Solar Powered Drip Irrigation did not give positive results in Sri Lanka due to many reasons. Please refer to this abstract on some research findings

http://www.harti.gov.lk/images/download/reasearch_report/abstract_economic_evaluation.pdf

You may order the whole report from

http://www.harti.gov.lk/index.php?option=com_content&view=article&id=125&Itemid=57&lang=en

or contact the lead researcher Mr. M.M.M. Aheeyar at

[email protected]