EN
In 2008–2009 were estimated: the value of index LAI (Leaf Area Index), number of ears, degree of lodging and plant height of ten cultivars of spring wheat grown at an average and intensive technology with different doses of nitrogen and the application or the lack of retardant and fungicides. Retardant use even at higher level of nitrogen fertilization resulted in a significant shortening of length of the blades and reduced plant lodging. The cultivation of spring wheat using intensive technologies differentiates number of ears on the body surface area and volume of index LAI. Studies also showed significant differences among cultivars in plant height, number of ears, and index LAI, but only in the final stage of development.