Results 31 to 40 of about 1,264 (175)

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

Revista 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, A. A. Tanaka, A. C. Da Silva, E. M. Uliana, F. T. De Almeida, A. W. A. Gomes, A. E. Klar   +6 more
openaire   +2 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

Revista 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, Edward C. Martin, Donald C. Slack, Edward J. Pegelow, Allen D. Folta   +4 more
doaj   +1 more source

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

علوم 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, Farshad Khashayi, Javad Behmanesh, Reza Delir Hasan Niya   +3 more
doaj   +1 more source

Eddy covariance observations and FAO Penman-Monteith modelling of evapotranspiration over a heterogeneous farmland area

Meteorologische Zeitschrift, 2022
This work presents the characteristics of actual evapotranspiration obtained using the eddy covariance method and a comparison with the results of crop reference evapotranspiration determined based on the FAO‑56 Penman-Monteith formula. The results of measurements performed under conditions typical of Central and Southern Poland's agricultural ...
Mariusz Siedlecki, Włodzimierz Pawlak, Krzysztof Fortuniak   +2 more
openaire   +2 more sources

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

HortScience, 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, Ziyi Chen, Danfeng Huang, Jingjin Zhang   +3 more
doaj   +1 more source

Smart Sensor‐Integrated Lysimeter System for Affordable on‐Farm Crop Water Monitoring and Irrigation Management

Irrigation and Drainage, EarlyView.
ABSTRACT Accurate monitoring of crop water use is critical for precision irrigation, yet conventional lysimeter systems remain too costly and complex for widespread adoption. This study presents the development and field validation of a low‐cost, information and communication technology (ICT)‐enabled weighing lysimeter system that integrates load cells,
Stephen Okwang, Younggu Her, Taeil Jang
wiley   +1 more source

Drought Risk in Mango and Avocado Orchards: Insights Into Plant Water Relations and Irrigation‐Related Agronomic Solutions

Irrigation and Drainage, EarlyView.
ABSTRACT Climate change is making water availability more uncertain, with growing consequences for the productivity and long‐term sustainability of tropical and subtropical fruit orchards. Mangifera indica L. and Persea americana Mill. both require large amounts of water to sustain growth and productivity.
Eleonora Cataldo
wiley   +1 more source

The Comparison of SEBAL Algorithm with SWAP Model and Computational Method to Determine Evapotranspiration [PDF]

علوم و مهندسی آبیاری, 2016
Accurate quantification of ET in irrigated agricultural lands is crucial for planning for water allocation, optimizing crop production irrigation management, evaluating the effects of changing land use on water yields.
Mostafa Yaghobzade, Zahra Izapanah, Saeid Broomand nasab, Hesam Seyed kaboli   +3 more
doaj   +1 more source

Multiobjective Simulation–Optimization of Crop Allocation and Water Resources in Canal Command Areas Using Genetic Algorithms

Irrigation and Drainage, EarlyView.
ABSTRACT This study develops an integrated simulation–optimization framework for sustainable crop allocation and water resource management in the Bargarh Canal Command (BCC), eastern India. Efficient irrigation allocation remains a critical challenge due to competing demands, groundwater–surface water interactions and environmental constraints ...
Priyanka Mohapatra, J. C. Paul, Sushree Sangita Dash   +2 more
wiley   +1 more source

Evapotranspiração de referência nos perímetros irrigados do estado de Sergipe Reference evapotranspiration in the irrigated perimeters of the state of Sergipe

Revista Brasileira de Engenharia Agrícola e Ambiental, 2010
O conhecimento da evapotranspiração de referência (ETo) é essencial no manejo de irrigação de culturas agrícolas em todo o mundo. Neste trabalho se utilizaram dados meteorológicos diários de evaporação do tanque "Classe A", temperaturas máximas e mínimas,
Inajá F. de Sousa, Vicente de P. R. da Silva, Fabiana G. Sabino, Antenor de O. A. Netto, Bruce K. N. Silva, Pedro V. de Azevedo   +5 more
doaj   +1 more source