Results 101 to 110 of about 12,619 (208)

Water requirements for wheat and maize under climate change in North Nile Delta

open access: yesSpanish Journal of Agricultural Research, 2015
Determination of water requirements for wheat and maize under climate change is important for policy makers in Egypt. The objectives of this paper were to calculate (i) ETo and (ii) water requirements for wheat and maize crops grown in five governorates (
Samiha Ouda   +2 more
doaj   +1 more source

Evaluasi Metode Penman-Monteith dalam Menduga Laju Evapotranspirasi Standar (ET0) di Dataran Rendah Propinsi Lampung, Indonesia [PDF]

open access: yes, 2012
Evapotranspiration is an important factor in estimating crops water use and then irigation schedule. Direct measurement of evapotranspiration is difficult since it is influenced by many factors.
Karyanto, A. (Agus)   +2 more
core  

An evapotranspiration model using SYNOP weather observations in the Penman-Monteith equation

open access: yes, 1998
This work was initiated in order to improve the evapotranspiration data used in the HBV model. Evapotranspiration is calculated consecutively by the Penman-Monteith equation using three-hourly SYNOP observations transformed to values of net radiation, water vapour deficit and data necessary for evaluating aerodynamical resistance and surf ace ...
openaire   +2 more sources

Evaluation of evaporation-measuring equipments for estimating evapotranspiration within a greenhouse Avaliação de equipamentos de medida da evaporação para estimativa da evapotranspiração dentro de um ambiente protegido

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2004
With the objective of evaluating the performance of simple evaporation measuring equipments in estimating the evapotranspiration in greenhouse, an experiment was conducted in Piracicaba, SP, during a tomato-growing season.
Flávio F. Blanco, Marcos V. Folegatti
doaj   +1 more source

A global comparison of four potential evapotranspiration equations and their relevance to stream flow modelling in semi-arid environments [PDF]

open access: yesAdvances in Geosciences, 2008
This study compares four different potential evapotranspiration equations according to Priestley Taylor, Kimberly Penman, Penman Monteith (FAO-56) and Hargreaves on a global basis to demonstrate their difference, and assess their impact on the ...
M. Weiß, L. Menzel
doaj  

Long Term Potential Evapotranspiration and Evapotranspiration Data and Services at NASA GES DISC [PDF]

open access: yes
Recently, the NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) has released global land 3-hourly Potential Evapotranspiration and Supporting Forcing Data Version-1 (PET_PU_3H025.001), at 0.25x0.25 degree spatial resolution ...
Loeser, Carlee   +7 more
core   +1 more source

Evaluacion de tres metodologias para estimar el consumo de agua en tomate (Licopersicon esculentum, Mill) y su efecto sobre la frecuencia de riego [PDF]

open access: yes, 2001
Resumen (Spanish, English)44 p.Un estudio fue desarrollado en tomate industrial (var. Heinz 9382) en la estación experimental de Panguilemo, Universidad de Talca, durante la temporada agrícola 1998/99, con el objeto de evaluar el modelo de Penman ...
Jones Haddad, Adolfo Esteban   +2 more
core  

Comparison of daily potential evapotranspiration calculated by two procedures based on Penman-Monteith type equation

open access: yesJournal of Hydrology and Hydromechanics, 2013
Paper presents comparison of the daily reference crop (grass vegetation cover) potential evapotranspiration results calculated by the two modifications of the Penman-Monteith type equation.
Hlaváčiková Hana, Novák Viliam
doaj   +1 more source

Evaluating the economic feasibility of thermal screens in New Zealand using a mathematical model : a thesis presented in partial fulfilment of requirements for the degree of Master of Horticultural Science in Horticultural Engineering at Massey University [PDF]

open access: yes, 1991
A mathematical model of the greenhouse environment was developed to ascertain the annual savings in heating expenditure achieved by thermal screens. Thirteen materials with thermal screening potential were investigated.
Newman, Todd Litchfield
core  

Desenvolvimento dum sistema de rega automático, autónomo e adaptativo – estudo comparativo de cinco métodos para o cálculo da ETo [PDF]

open access: yes, 2007
Para efeitos de desenvolvimento dum sistema de rega automático, são estudados e calibrados cinco métodos de cálculo de Evapotranspiração de referência (Priestley-Taylor, Makkink, Hargreaves, Turc, Jensen-Haise) utilizando apenas os parâmetros climáticos ...
Costa, J. L.   +7 more
core  

Home - About - Disclaimer - Privacy