The effect of nitrate nitrogen on barley yield on chernozem of the southern steppe zone of the Southern Urals

Abstract

Increasing the yield of barley cultivated in crop rotations and by sowing permanently is a major problem in the steppe zone of the Southern Urals. This requires to study factors affecting an increase in the crop yield. The aim of the study is to identify the effect of nitrate nitrogen, the biological activity of soil and the aftereffect of predecessors on barley productivity at different levels of mineral nutrition. In the experiment, methods such as field, ionometric and decomposition of flax fiber were used. The methods used make it possible to obtain new original results on the factors and experimental options. Over 18 research years, the highest barley yield was observed in millet and pea rotation using fertilizers. It amounted to 1.42 and 1.43 tons per 1 ha. These results were achieved due to the consumption of nitrate nitrogen up to 2.3 mg and accumulation in the amount of 7.7 mg per 100 g of soil with an activity of microorganisms of 8.3 and 8.1 %. The results are of scientific and practical importance in the field of agriculture and crop production.

The influence of main factors on productivity of barley in the steppe zone of the Southern Urals

“…Barley ties in conditions of water availability during the growing season contribute to the formation of various sizes of plant organs, which affect productivity [3]. On average, over 18 years of research, we observed the consumption of nitrates up to 2.3 mg by the plant during the growing season of barley with the activity of cellulose-decomposing microorganisms in the soil of 8.3%, leading to an increase in grain yield up to 1.42 t/ha [4].…”

Scientifically based possibilities of conservation of natural soil fertility of black soils of contour-landscape agriculture of Orenburg region

“…On average for the year it was: in 1991-2000. -3.1 million tons; 2001-2005 -2.8 million tons; including: 2004 -2.2 million tons, 2005 -1.9, 2006 -2.0 million tons [1,2]. In the last 10 years (2007-2016), grain production remained at the same low level.…”