Weed chemical control in grain sorghum at the steppe zone of Ukraine

Abstract

The highest control of ragweed (Ambrosia artemisiifolia L.) in the field experiments was provided by the herbicide Primekstra TZ Gold (effect - 83%; dose - 4.5 l/ha), bent sedum (Amaranthus retroflexus L.) with herbicide Mastak (effect - 88%; dose - 0.5 l/ha), chicken millet (Echinochloa crus-galli L.) using the herbicides Varyag and Datonit Gold (effect - 57%, dose - 4.5 and 2.5, respectively), white quinoa (Chenopodium album L.) – herbicide Datonite Gold with surfactant (effect - 85%; dose - 2.5 l/ha). The greatest chemical control was provided by the application options of herbicides Varyag – 4.5 l/ha and Agent – 0.6 l/ha in the phase of 3-5 leaves of the crop in June. This treatment provide the Ponki sorghum hybrid grain yield increase 24-27% compared to the control.