EN
In the paper there were described - on the basis of domestic and foreign literature review - problems related to significance of forecrop for canopy architecture and yield components of winter wheat, crop which is known among the cereals as the most affected by its placing in crop rotation. Either, its share and that of other cereals in tbe crops area increase in the last years surpassing the „tolerance treshold", being established as 65-75% for the settlement conditions in Poland. It means that the cerealsare grown each after other during 2 and even 3 years. Neglecting rotation that determines the choice of forecrop plant and retaining of long enough pauses in cultivating given crop species leads to the degradation of physicat biological and chemical properties of the soil, increase in weeding, infection with pathogenic fungi, resulting in yield decrease. In the review - covering 58 literature references - based on the data concerning natural and production aftermaths of growing winter wheat in various rotations, good and less useful forecrops for this species were indicated and it was underlined the sensitivity of wheat to forecrop and to whole crop rotation. Leguminous plants and their mixtures with cereals cultivated for green fodder or for seeds (species and cultivars of shorter vegetation period).Winter rape, early potatoes and mid-early potatoes cultivated on farmyard manure and the oats are known as the best winter wheat forecrops all over the country. Alternative forecrops could be: clover and other perennials, sugar beets. late potatoes and maize. while the very bad forecrops for winter wheat are: wheat. barley, rye and triticale.