Evaluation of the Relationship between the Yield and Grain Quality of Winter Wheat and the Fertility Indicators of Typical Chernozem
Year: 2024
Type: article
Abstract: The studies were conducted to assess the relationship between yield, grain quality of winter wheat and soil fertility indicators, to determine their optimal values for the crop using data-logical analysis. The work was carried out in 2021-2022 on typical chernozem in the Kursk region. Conjugate studies were conducted on the yield and protein content in the grain of winter wheat of the Leonida variety, as well as soil fertility indicators in the 0-20 cm layer on 30-meter sites during the harvesting period. A stable very close, close and medium relationship was revealed between the winter wheat yield and soil density (data transfer coefficient in 2021 – 0.42, in 2022 – 0.18), the content of exchangeable calcium (0.18 and 0.36), microbial biomass as a % of mobile humic acids (0.31 and 0.26) and of humus (0.28 and 0.15), humus (0.20 and 0.15), mobile phosphorus (0.20 and 0.13), the quality of mobile humic substances (0.19 and 0.13) and the Ca/Mg ratio (0.14 and 0.21). Similar correlations were established for the protein content in grain with mobile humic substances (0.31 and 0.15) and mobile fulvic acids (0.23 and 0.19), alkaline-hydrolysable nitrogen (0.12 and 0.09), mobile potassium (0.06 and 0.17), soil density (0.17 and 0.25), Ca/Mg ratio (0.17 and 0.25), and mobile phosphorus (0.15 and 0.08). Optimal and integrated optimal soil fertility indicators have been established for the formation of winter wheat yields of 3.3-5.3 t/ha with a protein content in grain of 16.9-17.9% in 2021, yields of 7.1-8.6 t/ha with a protein content of 11.8-12.3% in 2022. Stability in the studied years during the formation of the winter wheat yield was characterised by the values of the optimal parameters of soil density (1.10-1.20 g/cm 3 ) and the quality of mobile humic substances (0.74-0.86); protein in grain – the content of mobile humic acids in the soil as a percentage of humus (5.4-5.9%), soil density (1.10-1.22 g/ cm 3 ), mobile phosphorus (150-157 mg/kg).
Source: Russian Agricultural Sciences
Institution: Kursk Federal Agrarian Scientific Center
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W4408754696