Estimation of Actual Evapotranspiration (ETa) of Major Crops of a Distributary of Mahanadi Canal Command Using CROPWAT 8.0 Model by Penman: Montieth Method

This paper aims to estimate Actual Evapotranspiration of major crops by using CROPWAT 8.0 software in 2A canal command Mahanadi Dhamtari district. evapotranspiration is a key process hydrological cycle and sole term that links land surface water balance energy balance. Irrigation an essential part different because rainfall not enough for irrigated farmland. Long daily meteorological data including rainfall, maximum temperature, minimum relative humidity, wind speed sunshine hours IMD station was used as input modified Penman method model. The crop stage data, the value Kc in, mid, end selected obtained from Department rooting depth, critical depletion height are taken FAO Drainage Paper 56. Monteith ETo ETc respectively. area Paddy, Wheat, Chickpea , Summer Paddy. Based on intensive study this paper, basis weather recorded 2007 2021 were obtain result. detects Penman–Montieth best all crops.