Possibilità produttive dei prati monofiti di graminacee in ambiente mediterraneo

Over the four years from 1973 to 1977 the productive capacity of 20 grasses was tested on calcareous soils of northern Sardinia. The tall fescue «Maris Djebel» and «Manade» were the most productive achiving 46 and 44 t/ha of DM over the quadriennium, about half of which in autunn-winter period. The cocks-foot «Floreal» achieved good results especially with regard to the best hay production. The perennial ryegrass and Toowoomba canarygrass which had been decimated at the beginning of the third year showed poor adaptability. The Swiss ryegrass « Manava» gave good results in the first biennium (24 t/ha of DM) but later the yield was reduced because of difficulty in self-seeding.