| Abstrakt: |
Winter wheat is an important crop in Ukraine. In 2019, it was grown on 6.65 million hectares. Two factors that can significantly reduce wheat productivity are the wrong selection of fertilizer system and weed control system. The experiments were carried out in the years 2016-2019. The following formulations were used for weed control: Tribenuron-methyl, 750g/kg (20, 30 g/ha); Triasulfuron, 750g/kg (10, 15 g/ha); Prosulfuron, 750g/kg (20, 30 g/ha); Thifensulfuron-methyl, 750g/kg (20, 30 g/ha). Formulations were applied in autumn in the growth stages of winter wheat (BBCH-scale) 7-9, 10-13, 22-25, and in spring in stages 25-26, 27-29, 30-35. The analysis of the areas of cultivation, yield, and export shows that in Ukraine, 24-26 million tonnes of the wheat grain is grown annually, of which 50-72% is exported. Along with the exported grain, 224 thousand tonnes of nitrogen, 80 thousand tonnes of phosphorus, and 53 thousand tonnes of potassium, which equals 382.3 million US dollars, are removed from the soil every year. This means that producers bear the costs of compensation for lost soil fertility through the use of additional fertilizers. To protect crops from dicotyledonous weeds in autumn, it is recommended to use Prosulfuron formulation in the early stages of growth and development of winter wheat (BBCH stages 7-9) at an application rate of 20 g/ha, and Triasulfuron in the stages 10-13 at an application rate of 10 g/ha. If necessary, for spring weed control it is advisable to use Prosulfuron during the restoration of spring vegetation (BBCH stages 25-26), at an application rate of 20 g/ha, or Triasulfuron at a rate of 10 g/ha in stages 27-29. [ABSTRACT FROM AUTHOR] |
