A field experiment was conducted in 2004–2007 to study the effect of forecrops (spring wheat, field pea, and mixtures of spring wheat and field pea in the following proportions: 75 + 25, 50 + 50, 25 + 75%, and their biomass (post-harvest residues, post-harvest residues + straw) on weed infestation in winter triticale. The value of airy dry mass and number of weeds were reduced in winter triticale cultivated following field pea and the mixture spring wheat/field pea compared with spring wheat forecrop alone. Post-harvest residues of the forecrops incorporated with straw significantly reduced the number and airy dry mass of weeds in winter triticale. The experimental factors did not significantly affect the composition of weed species in winter triticale.
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