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Comparação entre trȩs métodos para estimar lâminas de irrigação
(2008-01-01)
An experiment with four treatments was carried out on the experimental area of ADEI to compare three methods of water use requirement: ETc (T1) - irrigation based on crop evapotranspiration (ETc); Tensiometers (T2 and T3) ...
Suction equilibration time for a high capacity tensiometer
(AMER SOC TESTING MATERIALS, 2008)
It is well established, the importance of the measurement of soil suction for the assessment of mechanical and hydraulic behavior of unsaturated soils. Among the methods to obtain the soil suction, the tensiometer is one ...
Measurement systems of soil water matric potential and evaluation of soil moisture under different irrigation depths
(Associação Brasileira de Engenharia Agrícola (SBEA), 2012-06-01)
O desenvolvimento de novas metodologias e instrumentos que possibilitem determinar o conteúdo de água no solo é de fundamental importância para a prática de irrigação. O estudo teve por objetivo avaliar a eficiência do ...
Measuring Hydraulic Conductivity to Wilting Point Using Polymer Tensiometers in an Evaporation Experiment
(SOIL SCI SOC AMER, 2011)
The polymer tensiometer is a novel instrument to measure soil water pressure heads from saturation to permanent wilting conditions. We used tensiometers of this type in an experiment to determine the hydraulic properties ...
Planilha eletrônica para auxilio à tomada de decisão em manejo de irrigação
(2012-01-01)
The irrigation scheduling is basically the adoption of pre-established criteria to define the time and the amount of water to be applied through irrigation systems. Hence, the objective of this work was to develop and test ...
Evapotranspiration and crop coefficients of seedless watermelon
(UNIV FEDERAL CEARA, 2008)
The research was developed in Fortaleza, CE (latitude 3 degrees 43`S, longitude of 38 degrees 32`W and altitude of 19.5 m). It aimed to determine the Evapotranspiration and the crop coefficients for the different stadiums ...
Determinação das propriedades hidráulicas do solo utilizando tensiômetros de polímeros em experimentos de evaporação
(Sociedade Brasileira de Ciência do Solo, 2011)
O tensiômetro de polímeros é um equipamento recentemente desenvolvido que permite medir o potencial matricial da água no solo desde a saturação até condições mais secas do que o ponto de murcha permanente. Nesta nota ...
Epoca de suspender as irrigacoes da cultura do trigo.
(Pesquisa Agropecuaria Brasileira, Brasilia, v.31, n.11, p.823-828, nov. 1996., 2011)