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[This article belongs to Volume - 56, Issue - 06]

Abstract : Water is becoming increasingly scarce, creating more severe water stress due to climate change, particularly in the Mediterranean region. As a result, water supply is a major constraint to agricultural production in Algeria. On this basis, an experiment was carried out at the Mostaganem School of Agronomy under controlled conditions during the 2021/2022 cropping season. The aim was to study the effect of three irrigation rates (100%, 80%, and 60% FC) combined with 4 frequencies (each day, after 3 days, after 5 days, and after 7 days) on the production performance of the green bean crop (Phaseolus vulgaris), for which several parameters were measured. Thus, the results revealed a rate and irrigation frequency effect and their interaction on several parameters. Indeed, maximum yield was obtained at an irrigation frequency of one day (13.42g/pot), and a 98.2% reduction in yield was detected at an irrigation frequency of 7 days (2.27g/pot). Looking at irrigation rates, the highest yield was found at full irrigation (100%), and increasing water stress caused significant yield reductions, e.g., 41% and 62% for 80% FC and 60% ET, respectively. In conclusion, the green bean crop is sensitive to water stress, particularly regarding yield development.