Results 31 to 40 of about 13,095 (205)

Avaliação de métodos de estimativa da evapotranspiração horária para alface cultivada em sistema hidropônico em ambiente protegido Evaluation of methods of estimation of hourly evapotranspiration for hydroponic lettuce under protected environment

open access: yesEngenharia Agrícola, 2010
O objetivo deste trabalho foi avaliar a precisão e a exatidão de métodos de estimativa de valores horários de evapotranspiração (ETc) para alface cultivada em sistema hidropônico sob ambiente protegido.
Carlos R. W. Moura   +3 more
doaj   +1 more source

SENSITIVITY ANALYSIS OF A FAO PENMAN MONTEITH FOR POTENTIAL EVAPOTRANSPIRATION TO CLIMATE CHANGE

open access: yesJurnal Teknologi, 2017
Sensitivity of the FAO Penman-Monteith (FPM) potential evapotranspiration (PET) model under tropical climates has been studied in the present study. A total of 17 meteorological stations covering Peninsular Malaysia starting from 1987-2003 were used as model inputs. A sensitivity analysis (SA) was carried out using the graphical method for temperature,
Ahmad, N. F. A.   +4 more
openaire   +2 more sources

Analysis of the Accuracy Comparison of Five Different Models of Valiantzas Equation in the Estimation of Reference Evapotranspiration [PDF]

open access: yesعلوم و مهندسی آبیاری, 2018
Evapotranspiration is one of the most important factors in hydrological cycle. Potential evapotranspiration is used to design in irrigation and drainage networks and hydrological studies (Davis & Dukes, 2010).
Saeid Mehdizadeh   +3 more
doaj   +1 more source

Comparison of several methods for calculation of reference evapotranspiration [PDF]

open access: yes, 2013
The knowledge of the evapotranspiration of natural ecosystems and plant populations is of fundamental importance in several branches of science, research and practical uses.
Dobos, Attila Csaba   +2 more
core   +4 more sources

REFERENCE EVAPOTRANSPIRATION BY PENMAN–MONTEITH FAO 56 WITH MISSING DATA OF GLOBAL RADIATION

open access: yesRevista Brasileira de Engenharia de Biossistemas, 2016
The aim of this study was to evaluate the errors generated on the reference evapotranspiration (ET0) estimation by Penman-Monteith FAO 56 (PMF 56) when employed simplified models to estimate the global radiation (HG) are based on the air temperature. We evaluated 28 automatic weather stations (EMA's) belonging to the National Institute of Meteorology ...
A. P. De Souza   +6 more
openaire   +2 more sources

ETo estandarizada en el sur de España ¿Cuál debe ser la referencia? [PDF]

open access: yes, 2016
La evapotranspiración de referencia (ETo) cuantifica la demanda evaporativa del aire y es necesaria para el cálculo del uso consuntivo de agua de los cultivos.
Berengena, J.   +2 more
core   +1 more source

Uncertainty in the reference evapotranspiration based on FAO Penman-Monteith (PISCOeo_pm)

open access: yes, 2022
An uncertainty analysis (error propagation approach) of the FAO Penman-Monteith evapotranspiration (PISCOeo_pm). Poster related to the Simposio Internacional 2022 “Las Montañas, Nuestro Futuro” (MONFU, https://inaigem.gob.pe/simposio/)
openaire   +1 more source

Step by Step Calculation of the Penman-Monteith Evapotranspiration (FAO-56 Method)

open access: yesEDIS
AE459, a 12-page fact sheet by Lincoln Zotarelli, Michael D. Dukes, Consuelo C. Romero, Kati W. Migliaccio, and Kelly T. Morgan, provides a step-by-step calculation of the reference evapotranspiration (FAO-56 method) for a given location from the available weather data. Includes references.
Lincoln Zotarelli   +4 more
openaire   +3 more sources

Water use and crop coefficient of subsurface drip-irrigated lettuce in Central Arizona Demanda hídrica e coeficiente de cultura da alface irrigada por gotejamento sub-superficial na região central do Arizona

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2005
A two year field study (1996/97 and 1997/98 growing seasons) was carried out at the Maricopa Agricultural Center (33º04'07" N; 111º57'18" W) of the University of Arizona, USA, to investigate the water use and to derive Kc's for subsurface drip-irrigated ...
Aureo S. de Oliveira   +4 more
doaj   +1 more source

Evapotranspiration Model-based Scheduling Strategy for Baby Pakchoi Irrigation in Greenhouse

open access: yesHortScience, 2020
Water management is one of the most important operations in greenhouse baby leaf production. However, growers mainly irrigate the plants based on experience, which generally leads to yield loss, uneven quality, and low water-use efficiency.
Doudou Guo   +3 more
doaj   +1 more source

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