EVALUATION OF BIOMASS YIELDS OF GREEN BRISTLE GRASS (SETARIA ITALICA SUBSP. ITALICA) DEPENDING ON AGRICULTURE TECHNIQUES

Abstract

Green bristle grass is a promising fodder crop for the arid conditions of the Lower Volga region. The results of the study of the effect of seeding rate and width of row spacing on the above-ground biomass yield of the green bristle grass variety Stachumi 3 are presented in the article. The research was conducted on the experimental field of the FSBSI "Russian Research Institute of Sorghum and Maize," which is located in the suburban microzone of Saratov district and is territorially located in the southern part of the black soil zone of the Lower Volga region. The climate of the region is sharply continental, arid. The soil of the experimental field is southern chernozem. The results obtained were confirmed by the analysis of dispersion of a two-factor experiment on the study of six gradations of factor A (seeding rate from 1.25 to 7.50 mln pieces/ha) and three gradations of factor B (row-spacing 70, 30, and 15 cm), according to which significant differences in the effect of seeding rate on the above-ground biomass yield of green bristle grass were found. On average over the four years of the study, the highest crop yield was obtained in the milky ripeness phase when sowing with a row-spacing of 15 cm and with a planting rate of 5.00 mln/ha - 31.77 t/ha, and when the row-spacing was increased from 30 to 70 cm, the biomass yield was 29.53 and 21.53 t/ha, respectively.

Keywords

• green bristle grass
• biomass yield
• biochemical composition
• protein
• two-factor analysis of variance
• seeding rate
• row spacing