Influence of soil herbicides on biometric indicators and yield of sunflower

The article has presented the results of field experiments and laboratory studies effectiveness use soil herbicides various chemical classes in sunflower agrophytocenosis. influence specified technological aspects on processes growth development, as well formation quantitative qualitative indicators harvest, been established. research have confirmed more optimal conditions for vegetation mass, assimilation apparatus root system against background application pre-emergence herbicides. For example, height plants was greater by 2.9–4.5 cm, length exceeded benchmark 6.1–10.0 area leaf surface — 1.4–2.8 dm2. When determining such a fundamentally economic valuable indicator, seed roughness, а clear regularity effect this indicator not found. study Harness, Dual Gold Gezagard quality seeds showed that had positive process oil accumulation. In addition to indicators, yield also determined. hybrid Sonachny 2.64 t/ha when using herbicide Gezagard, while control 2.13 t/ha. Under action Harness herbicides, at level 2.46–2.47 t/ha, which is 15.5% higher than control.