Influences of the showing season on the growth and development of three soya cultivars [Glycine max (L.) Merr.]

This investigation was developed at the spring (May) and winter (December) season of 2005 in the Agricultural Experimental Station "Alvaro Barba Machado" belonging to the Central University "Marta Abreu" of the Villages, to determine the influence of this factor on the growth and development of three soybean cultivars: Incasoy-24; Incasoy-27 and Incasoy-35, by means the assessment of growth indexes like the height, leaves and branches number, foliar area, and stages of growth of the plants. The effect of sowing season factor on the stages of growth duration, showed in a similar way in both sowing seasons. At both times the biggest height was observed in Incasoy-27, while in the rest of the indexes of growth the higher values were presented in Incasoy-35, except in the number of branches in the stage of growth R3 from spring season and in the foliar area measure at 30 days of winter season, where in both cases they corresponded to Incasoy-24.