Altura da lamina, tempo e volume de enchimento de um equipamento de irriga？？o por pavio e determina？？o da uniformidade de distribui？？o de água em substratos

the aims of this study were to evaluate the water depth, filling time and volume in a wick irrigation equipment using auto compensating gutters and to determine the water distribution uniformity (wdu) in these equipments filled with organic commercial substrates (pine bark/pb and coconut coir/cc). we assembled two experimental modules in a completely randomized design with five replications. there was variation in water depth measurements (1.6 to 4.0 cm), even with the equipment leveled. average filling time was 6h22min for module 1 with pb and 3h45min for module 2 with cc. the filling volume was variable, showing that gutters in the extremities (no. 1 and 5) had lower volumes in module 1 and in the beginning (no. 1 and 2) in module 2. volumetric soil moisture (θ) ranged from 42 to 94% in module 1 and from 24 to 72% in module 2, with isolated points of desiccation and/or flooding. water depth, filling time and volume were disuniform in all experimental modules and auto compensating gutters, indicating equipment imperfections. water distribution was variable in both substrates due to their hydro-physical characteristics and also water depth in the gutters, with higher humidity and water distribution uniformity in pine bark than in coconut coir.