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 >>  . C 24.00.00

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The article describes the results of the experimental data of the effect of crop rotations of different saturation with cereals, precursors and fertilizer systems on the potential wed seed contamination of soil in crops of spring barley. Studied that in the topsoil the seed stock of weed species in crops after potato in cereals tilled rotation at 75 % saturation with cereals was 38,9 % higher than after its stubly precursors in 100 % cereals crop rotation. It is established the increase of this indicator on the organic backgrounds in both crop rotations to 6,4 11,5 % in comparison with unfertilized variants. The use of mineral fertilizers N90P90K90 on these organic backgrounds caused the accumulation of the number of seed weeds in the soil to 4,8 7,1 %.

Key words: crop rotation, fertilizers, spring barley, potential weed seeds contamination, segetal vegetation.

   



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316.334.22:331.101.3 . . ² Ͳ ֲ ֲʲ , . ( , .). Summary The article deals with the phenomenon of trust in...




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