نتایج جستجو برای: fao penman

تعداد نتایج: 4452  

Journal: :Revista Brasileira de Engenharia Agricola e Ambiental 2022

ABSTRACT DMulching contributes to the maintenance of soil moisture at reasonable levels for crop growth. It influences water demand and irrigation time. The aim this study was estimate evapotranspiration root uptake by ‘BRS Princesa’ banana cultivar through a simple approach using some components balance within zone in bare mulched irrigated drip micro sprinkler systems. experimental design com...

Journal: :Tarim Bilimleri Dergisi-journal of Agricultural Sciences 2021

The absolute prediction of reference evapotranspiration (ETo) is an important issue for global water balance. Present study demonstrated the performance k-Nearest Neighbour (kNN) and Artificial Neural Network (ANN) models daily ETo using four combinations climatic data. kNN ANN were studied climate data during 1996-2015 in Middle Anatolia region. findings estimation with classed FAO Penman Mont...

Journal: :international journal of advanced biological and biomedical research 2014
zohreh baniabbass navid adibifard mehrdad esfandiari s.r. hassanpour avanji

today climate change is one of the most important human concerns this fact affected human life in different ways .  one of the most important impacts of climate change is on crops yield so that change in temperature  regime  particularly maximum and minimum  temperatures  is noticeably change plants production . in this research , is considered to  impact of climate change on water requirement ...

Journal: :Çukurova Üniversitesi Mühendislik Fakültesi Dergisi 2022

Suyun öneminin tartışılmaz olduğu gerçeğini göz önüne alarak, hidrolojik çevrimin ve onun en karmaşık bileşenlerinden biri olan evapotranspirasyon (ET) kaybının iyi belirlenmesi gerekmektedir. Topraktan açık su yüzeylerinden buharlaşma bitkilerden terleme yoluyla kaybedilen suyun birleşimi olarak tanımlanan ET değerini belirlemek amacıyla birçok ampirik yöntem geliştirilmiş bu yöntemler üzerind...

Journal: :Water 2022

The aim of the study was to investigate utility artificial neural networks (ANNs) for estimation reference evapotranspiration (ETo) on Peloponnese Peninsula in Greece two representative months wintertime and summertime during 2016–2019 test if using fewer inputs could lead satisfactory predictions. Datasets from sixty-two meteorological stations were employed. available mean temperature (Tmean)...

Journal: :Hydrology 2022

The aim of this study was to investigate the utility multiple linear regression (MLR) for estimation reference evapotranspiration (ETo) Peloponnese, Greece, two representative months winter and summer during 2016–2019. Another objective test number inputs needed satisfactorily accurate estimates via MLR. Datasets from sixty-two meteorological stations were exploited. available independent varia...

Journal: :journal of agricultural science and technology 2010
s. er-raki a. chehbouni j. ezzahar s. khabba e. k. lakhal

this paper reports the results of using three empirical methods (makkink, priestley-taylor and hargreaves) for estimating the reference evapotranspiration (et0) in the semi-arid region of tensift al haouz, marrakech (center of morocco). the penman-monteith equation, standardized by the food and agriculture organization (fao-pm), is used to evaluate the three empirical methods. the obtained et0 ...

2009
Mohammad Javad Amiri

Evapotranspiration (ET) is one of the major components of hydrologic cycle. Accurate estimation of this parameter is essential for studies such as water balance, irrigation system design and management, and water resources management. Generally we used climate data for calculating evapotranspiration from indirect methods. This study investigates the utility of artificial neural networks (ANNs) ...

2017
Dengxiao Lang Jiangkun Zheng Jiaqi Shi Feng Liao Xing Ma Wenwu Wang Xuli Chen Mingfang Zhang

Potential evapotranspiration (PET) is crucial for water resources assessment. In this regard, the FAO (Food and Agriculture Organization)–Penman–Monteith method (PM) is commonly recognized as a standard method for PET estimation. However, due to requirement of detailed meteorological data, the application of PM is often constrained in many regions. Under such circumstances, an alternative metho...

Journal: : 2023

Crop coefficient for cherries was evaluated by measure the water consumption in Michigan State to find its variation with time as plant growth. coefficients value (Kc) were predicated University (MSU) and also Food Agriculture Organization (FAO) according consume of through season. In this paper crop are modified accordingly actual measurements soil moisture content. Actual evapotranspiration (...

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