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Abstract

Results of researches on an assessment of predecessors of peas wheat and colza on moisture and mineral food supply are given in a crop rotation at zero technology. It is shown that crops of wheat on a colza are better provided with moisture, but worse with nitrogen, and vice versa on peas. The most effective options of fertilizer of wheat on peas and a colza are P20 and P20+N20 in rows.
Researches were conducted in 2012-2014 on the southern carbonate heavy loamy the black soil. The breed of wheat is called «Astana». Before seeding preseeding processing against weeds by «Raundap Extra» herbicide in a dose of 2,0-2,5 l/hectare was carried out. Attention is paid to the high level of the current nitrification owing to a mineralization of fossils favorable on moistening – in 2013 and 2014.