Variation in Soybean Plant Height in Relation to Sowing Time and Plant Density

Soybean is a crop of great importance for the economic, ecological and agronomic advantages it provides. In the context of climate change, soybean crop presents certain performance risks in non-irrigated systems, as a result of water and thermal stress. The present study evaluated the development of soybean plants based on the plant height parameter (PH, cm) in relation to sowing date and plant density. The study and field experiments were carried out within ARDS Lovrin. The soybean crop was sown in three different periods: E I (17.04.2025), E II (28.04.2025), E III (12.05.2025). Within each sowing time, five density variants were tested: 45, 55, and 65 plants m⁻² with 25-cm row spacing (V1–V3), and 45 plants m⁻² with 60-cm and 80-cm row spacing (V4–V5). 15 experimental variants resulted, in three replications. Mann-Kendall Test indicated an increasing trend in the mean values ​​of the PH parameter, p