Comparison of four empirical evapotranspiration models against the penman – montieth in a mangrove zone

Evapotranspiration ET is a sine-qua-non in designing appropriate response to water management, crop management and agricultural food productivity. Evapotranspiration is a component of the hydrologic cycle, irrigation design and scheduling mostly in the semi – arid and arid regions water is becoming abundance scarce commodity. Appropriate design and application of evapotranspiration had increased all-round the year agricultural food production rather seasonal rainfed agriculture. In this research, we used five empirical evapotranspiration equation models to compare with the Penman – Monteith of the FAO paper 56. Among them is the Jensen – Hasie (1967) model modified, which proves a better value of evapotranspiration when compared with the FAO – 56PM among other ET within the ambit of the applied statistical method used in this work. This is closely followed by the Lincare method.