EN
Lolium perenne is unique in its advantageous chemical composition, considerable palatability and high digestibility. This high assessment is also corroborated by Polish investigations. Moreover, this evaluation is the result of high energetic value of forage obtained from Lolium perenne plantations. It is possible to obtain high quality ryegrass sward in Polish climatic and soil conditions, provided appropriate treatment of grasslands is assured, in particular, its proper utilization. It must be remembered that this grass is susceptible to thermal and water stresses, which may not only modify plant chemical composition but also decrease its persistence. Therefore, the utilization of this grass in Poland for animal nutrition is determined not only by its chemical properties but also by plant persistence and, associated with it, risk of its cultivation.