Abstract

GOMEZ-MASJUAN, Yarisbel; TORNES-OLIVERA, Norge; BROWN-MANRIQUE, Oscar  and  GUERRERO-ALEGA, Arnaldo Manuel. Estimation of the dynamic variables of irrigation scheduling in common bean crop (Phaseolus vulgaris L.). Rev Cie Téc Agr [online]. 2024, vol.33, n.2  Epub June 01, 2024. ISSN 2071-0054.

The research was carried out between the months of November 2020 and March 2021 and aimed to estimate the crop coefficient, root depth and abatement factor, depending on thermal time. The research area belongs to the UBPC Grito de Yara, Granma, Cuba, which is located at 200 25' 02'' N Latitude and 760 53' 27'' O Longitude. The estimation of the crop coefficient, root growth and exhaustion fraction was carried out using curvilinear models as a function of degree days. The estimation of root growth in the bean crop, using the three models evaluated, depending on the degree days, is reliable and is a very useful indicator for irrigation programming, since it facilitates the timely estimation of the sheet of water from the depth of the root. Growing degree days explain the allowable depletion levels of soil water for bean cultivation; In this regard, it was confirmed that the curvilinear model is accurate, which allows irrigation management, using information on degree days, to avoid water stress.

Keywords : Degree Days; Root; Depletion Fraction.

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