Maize performances as influenced by Winter cover crop green manuring [Zea mays L.; Latium]

abonos nitrogenados abonos verdes azote azoto biomasa biomass biomassa biomasse concimi azotati cotico erboso cover plants crop yield diserbo engrais vert escarda fertilisation fertilizer application field experimentation gazon green manures lacio latium lazio lolium multiflorum malezas mauvaise herbe nitrogen nitrogen fertilizers piante da copertura piante infestanti plantas de cobertura plante de couverture rendement des cultures rendimiento de cultivos sovescio verde sperimentazione in campo trifolium subterraneum turf vicia villosa weed control weeds zea mays