A CASE STUDY TO EVALUATE THE EVAPOTRANSPIRATION METHODS

Authors

  • MR. S. A. KABADE Research Scholar, Civil Engineering Department, S.T.B. College of Engineering, Tuljapur
  • PROF. P. A. HANGARGEKAR Head, Civil Engineering Department, S.T.B. College of Engineering, Tuljapur
  • PROF. D. C. POUL Asst. Professor, Civil Engineering Department, S.T.B. College of Engineering, Tuljapur

Keywords:

Evapotranspiration, Crop water requirements, Irrigation scheduling

Abstract

Preciseestimation of evapotranspiration is an importantstep in the field of water resource management, itvaries spatially and temporally. Recently, the Food and Agricultural Organization (FAO) has suggested FAO-56 Penman Monteith method (modified PM method) asa standard method for calculating evapotranspiration (ETo), because this method is applicable to all type of seasons and different climates and gives more preciseresults when compared with physical methods such asLysimeter and Class A pan. FAO-56 PM method cannot be debated by any other methods which require less data for calculating ETobut FAO-56 PM requires hugemeteorological data, which is not available at full climate stations. So there is need to find out anothersuitable method after FAO-56 PM, which will givecloserEToresults. Here six different methods are considered for present study, which are radiation based (FAO-56 Hargreaves, Turc, Priestley-Taylor), temperature based (Thornthwaite, Blaney-Criddle) and combine parameters based (FAO-56 modified Penman Monteith method).

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Published

2021-02-25

Issue

Vol. 5 No. 6 (2018): IJIERT

Section

Articles

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