The objective of this work was to study the effect of different furrow opening mechanism and levels of load applied to soil firming mechanism on the initial development of soybean, in no-till system under different soil moisture. A split-split-plot experiment was used, in which the main treatments were three soil water contents (0.22, 0.24 e 0.26 kg kg-1), split-plots were two types of furrow opening mechanisms (furrow plough and double disk), and split-split-plots were three levels of load applied to soil firming mechanism (12.2, 18.5 and 24.1 kPa), using a randomized block design, with three replications. Distance between seeds, depth of seed allocation, soil porosity around the seed, emergence speed index, seedling emergence on field and soil resistance to penetration were analyzed. The furrow plough type of soil opening mechanism resulted in deeper seed allocation, higher soil porosity around the seed, smaller distance between seeds and smaller soil resistance to penetration. The pressure on the soil firming mechanism influences seedling emergence on field, when the furrow plough is used. The soil moisture influences the seed allocation and distance between seeds, the emergence speed index and the soil resistance to penetration.
soybean; no-till; sowing moisture
