During the period 2013–2014 the efficacy of some soil and vegetation herbicides in sunflower, hybrid Baiano, grown by a conventional technology in the area of Chernogorovo, the region of Pazardzhik was studied, with sowing rate of 60,000 harvested plants per hectare. The experiment was set by the block method with 8 variants in 4 replications, the size of the experimental plot – 21 m2. The following herbicide variants were tested: Wing-P + Stratos Ultra 400 сm3/dа + 200 сm3/dа; Pledge 50 WP + Fusilade forte 8 g/da + 130 сm3/dа; Gardoprim Plus Gold 500 SC + Fusilade Forte 350 сm3/dа + 130 сm3/dа; Stomp Aqua + Stratos Ultra 350 сm3/dа + 200 сm3/dа; Linuron 45 SC + Agil 100 EC 300 сm3/dа + 80 сm3/dа; Goal 2E + Agil 100 EC 100 сm3/dа + 80 сm3/dа. The highest efficiency during the two years of study (from 84.4 to 88.0%) was established with the herbicide combinations Uing-P at 400 сm3/dа + Stratos ultra in a dose of 200 сm3/dа and Stomp Aqua at 350 сm3/dа + Stratos ultra at a rate of 200 сm3/dа.
Weed control in sunflower cultivation in the conventional technology