Features of the interaction of vetch and oats in mixed crops at different levels of nitrogen nutrition

Abstract

Application of nitrogen fertilizers at a dose of 30 kg/ha under the vetch and oat mixture practically does not affect the yield of vetch, but increases the yield of oats by an average of 21.7% and the yield of the vetch and oat mixture by 11.1 %. Nitrogen fertilizers in doses of 60 and 90 kg / ha reduce the yield of vetch in the vetch and oat mixture by an average of 21.5% and 31.6%, respectively, but increase the yield of oats by 47.8% and 73.9%, respectively; the yield of the mixture increases by 15.7% and 25.1%.The payback of 1 kg of mineral nitrogen by adding the yield of the vetch -oat mixture was at a dose of N30+6.3 kg/kg, at doses of N60 and N90 + 4.5 kg/kg and +4.8 kg / kg, respectively.