The soil volumetric moisture (m3 m-3) at different phenological stages of the soybean crop in the agricultural years 2018/19 (a) and 2019/20 (b). The soil volumetric moisture in the 0-10 and 10-20 cm layers during two growing periods (c). Means followed by different letters at the same phenological stage and between layers in each year show a significant difference using the Tukey test (p<0.05). The red dashed line represents the soil volumetric moisture at the permanent wilting point (PWP). EM: Emergence; VG: Vegetative; FL: Flowering; PD: Pod-filling.