The influence of stand establishment and site conditions on grain yield ofwinter wheat

Six year results of study of different ways of winter wheat stand establish ment are presented: conventional way = CT, i.e. mouldboard ploughing, seed bed preparation, sowing and protection way = NT, i.e. direct sowing into no -tilled soil by drill machine John Deere 750 with use of surface mulch from post harvest residues of soybean and different levels of nitrogen fertiliz ation (0, 50, 100, 150 kg.ha(-1)) were used in both methods. The field expe riments were carried out at three dissimilar sites, The influence of differ ent stand establishment, mulch used and intensity of nitrogen fertilization on grain yield of winter wheat and its structure was analysed. The results of field polyfactorial experiments show possibilities of protection way ap plication of winter wheat stand establishment because grain yields are quit e comparable with conventional method. In addition, protection ways are eco nomically favourable in consequence of a saving of working time and direct costs.