Effect of soybean cultivars sowing dates on seed yield and its correlation with yield parameters

The article presents the effect of three sowing dates on growth, development and yielding four soybean cultivars different earliness under temperature precipitation conditions across years. seed yield from early significantly correlated with total in June July, at later dates, also August. highest yields were collected a turn April May, protein yield, as well content seed, recorded for mid-early Merlin cultivar. Neither number weight per pod nor 1 000-seed depended date. Over years, significant, almost linear decrease plant height first setting height, nodules, LAI (leaf area index) value was observed. High significant correlations found between height.