EVAPOTRANSPIRATION AND CROP COEFFICIENT OF GREEN CHIVES GROWN IN A PROTECTED ENVIRONMENT
Keywords:
Allium fistulosum L, Water Consumption, Lysimetry, Vegetables, Protected EnvironmentAbstract
Objective: This study aimed to evaluate the water consumption and reference evapotranspiration (ET₀) of green chives grown in a protected environment using different mathematical models.
Theoretical Framework: The present research is based on concepts of plant physiology and irrigation management, both in a protected environment.
Method: To obtain the crop coefficient (Kc), the ratio between crop evapotranspiration (ETc), determined using the SLIMCAP system, and reference evapotranspiration (ET₀), estimated by the Penman-Monteith, Hargreaves-Samani, Solar Radiation, Blaney-Criddle, and Priestley-Taylor methods, was calculated.
Results and Discussion: The accumulated ETc of the chive crop in a protected environment was 178.12 mm over a 35-day cycle, corresponding to an average daily ETc of 4.95 mm. The maximum water consumption of the chive crop was 7.56 mm per day, and the Kc values for chives under protected environment conditions are: Phase I: 0.59; Phase II: 0.80; Phase III: 1.06 (according to the FAO Penman-Monteith standard).
Research Implications: This research can help seedling producers understand how the crop coefficient and crop evapotranspiration work, thereby contributing to plant production projects in protected environments.
Originality/Value: The research is relevant as it addresses a crop that is rarely studied or mentioned in the literature, providing data applicable to sustainable management in protected environments.
