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 inclu...

The recommended Penman±Monteith reference crop evapotranspiration (ET0) with derived crop coef®cients (Kc) from the phenomenological stages of Acala cotton is used to estimate the crop water requirements (CWRs) of Acala cotton in the Gezira area of Sudan. The published basal crop factors of Acala cotton were used with Penman±Monteith equation as well to estimate ET. The results were compared wi...

The behaviour of various formulas for évapotranspiration of grass in nonrestricted soil water conditions is considered. These are the expressions based on the Penman formula, i.e. "old" Penman, Penman-Monteith, Thorn-Oliver and the version recommended more recently by the FAO. Moreover, the Priestley-Taylor and the Makkink formulas are considered, which are radiation-based. Comparisons are made...

Pengelolaan dalam sistem irigasi sangat penting memenuhi kebutuhan air irigasi. Dengan hal tersebut,peneliti bertujuan untuk menganalisis sehingga dapat diketahui nilai evapotranspirasi pada daerah tanrutedong kabupaten sidrap. Dilakukan dengan pengumpulan data klimatologi yang berupa suhu,kecepatan angin,kelembaban,penyinaran matahari dan penguapan. Metode analisis dilakukan beberapa metode pe...

abstract evapotranspiration as one of the most important components of the hydrologic cycle, plays a key role in water resources management, crop yield simulation and irrigation scheduling. therefore, presenting a low cost and precision model is very essential for calculations of hourly eto. although, there are empirical formulas, their performances are not all satisfactory due to the complicat...

of an integrated knowledge-based machine-aided translation system called PANQLOSS. The ISI-specific work includes the development of English sentence generation and sentence planning capabilities and the construction of an Ontology of concepts to act as the semantic lexicon for all modules of the system as a whole. In addition, we continue to enhance Penman's existing generation technology, to ...

The Penman-Monteith equation is useful for computing evaporation rates of uniform surfaces, such as dense vegetation or bare soil. This equation becomes less useful for evaluation of evaporation rates at the regional scale, where surfaces are generally characterized by a patchy combination of vegetation and soil. This is particularly true in the arid and semi-arid regions of the world. The appr...

To improve the management of irrigation district is a key to develop water-saving agriculture. Based on the basic principles of water-saving irrigation, and using the method of Modified Penman Monteith and water balance equation, The system of irrigation management and decision support based on WEBGIS was developed,which is according to the soil moisture, crop growth status, meteorology change ...

Most of the current parameterization schemes for Penman–Monteith–Leuning evapotranspiration (ET) model (PML) consider meteorological and energy factors land use types, but analysis effect soil moisture (SM) changes on ET processes lacks sufficient attention. This paper proposes a scheme sensitive parameters PML considering water content, i.e., coupling surface SM in calculation evaporation coef...