ESTIMATION OF CROP WATER REQUIREMENT USING CROPWAT SOFTWARE IN APPAPURAM CHANNEL COMMAND UNDER KRISHNA WESTERN DELTA

C. RATNA RAJU¹*, K. YELLA REDDY², T.V. SATYANARAYANA³, P. YOGITHA^4
1College of Agricultural Engineering, Professor Jayashankar Telangana State Agricultural University, Sangareddy, 502001
²The Director (A & R), Water and Land Management Training and Research Institute, Hyderabad, 500030, Telangana
³Acharya N. G. Ranga Agricultural University, Rajendranagar, Hyderabad, 500030, Telangana
⁴Central Research Institute for Dryland Agriculture (CRIDA), Hyderabad, 500070, Telangana
* Corresponding Author : raju.ratna1@gmail.com

Received : 06-04-2016     Accepted : 29-04-2016     Published : 01-09-2016
Volume : 8     Issue : 31       Pages : 1644 - 1649
Int J Agr Sci 8.31 (2016):1644-1649

Keywords : Evapotranspiration, Crop coefficients, CROPWAT, Potential evapotranspiration
Academic Editor : S K Karthik, Dr Parasappa Kanannavar
Conflict of Interest : None declared
Acknowledgements/Funding : None declared
Author Contribution : None declared

Crop water requirements of crops in Appapuram Channel Command under Krishna Western Delta were computed with CROPWAT using the meteorological parameters. The major cultivated crops are rice and maize. The total water requirement for these crops has been computed. The CROPWAT a computer simulation model was used to estimate crop water requirement in Appapuram Channel Command under Krishna Western Delta in Andhra Pradesh for the years 2000 to 2010. The Penman – Monteith method was used for evapotranspiration calculation in the model. It was estimated that the gross water requirement for Appapuram Channel Command area to irrigate 8880 ha was registered and 4000 ha unregistered ayacut during kharif season and maize 4000 ha during Rabi to be 124.39 M.cum. The canal operation plan was prepared for estimated gross water requirement.