INFLUENCE OF TECHNOLOGICAL SYSTEMS OF GROWING BARLEY ON DENSITY SOIL IN THE STEPPE TRANS-VOLGA REGION
DOI:
https://doi.org/10.28983/asj.v0i5.87Keywords:
technological system of soil cultivation and sowing, soil density, spring barleyAbstract
We present a study on five technological tillage systems and sowing spring barley on chernozem ordinary for 2008-2011. In the dry conditions of the steppe Trans-Volga found that prolonged use of modern technologies of tillage systems and sowing spring barley, instead of traditional plowing with a constant, does not lead to an ordinary black soil compaction. The density of the soil and its duty cycle during the growing sea-son is in the range of optimal values for cultivation culture studied (1.0-1.2 g/cm3 and 55-60%, respectively). In the application of all tested systems in soil penetration resis-tance sowing barley period does not exceed the optimum values for the plant growth. This tendency was especially clearly observed in the years with a high amount of precipi-tation during the non-vegetation period (2008, 2011), when the soil density decreased significantly by 0.07 g cm3 (6.0-6.7%) in comparison with the control. The differentia-tion of soil density over layers is established. In the variants where the main treatment was carried out, the densest layer was 20-30 cm (1.09-1.16 g / cm3). In the direct seed-ing variant the density in the layers of 10-20 and 20-30 cm was at the same level - 1.07 g/cm3,. It evidences the soil decomposition in the untreated layers. With the application of all tested systems, soil penetration resistance during barley sowing did not exceed the optimal values for plant development (1400 kPa). The results show that ordinary black earth region under study do not require intensive tillage to control its density in the cultivation of spring barley.
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