The aim of the present research was to determine the after-effect of legumes: serradella, pea and yellow lupin, grown in stubble intercrop, for spring wheat. Field experiments were carried out at the Experiment Station of the Faculty of Agriculture at Mochełek, in the vicinity of Bydgoszcz, over 2003-2005. The papilionaceous plants researched considerably enhanced the stand for spring wheat. A positive effect of the ploughed-in biomass was seen by increasing the density of spikes and the grain and straw yield. There was found no significant effect of the plants researched on the number of grains per spike and 1000 grain weight of spring wheat grown after them. The after-effect of the intercrop of pea and serradella was stronger when the entire biomass produced was used for green fertilizer. In the case of yellow lupin, to obtain a maximum effect, it was enough to plough in post-harvest residue only.

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