Influence of the humic-fulvate complex on growth, development and quality of basil production (Ocimum basilicum L.)

Studies on the influence of the humic-fulvate complex on the growth and development of basil plants (Ocimumbasilicum L.), and the accumulation of essential oil in the green mass have been carried out. The investigations were conducted in the fields of the experiment station of the Russian State Agrarian University - the Moscow Agricultural Academy named after K. A. Timiryazev in 2017-2018. The soil of the experimental plot was sod-podzolic, the humus content was 2.2%, total nitrogen 35.7 mg / kg, P2O5 - 235 mg / kg, potassium 180 mg / kg, pH of the aqueous extract 6.0. The plants were treated with a humic-fulvate complex, which was produced from a dry humified flax waste by soaking in a 0.1 M potassium hydroxide solution for 2 hours at a temperature of 85-90 °C. According to chemical analysis after purification of the preparation the content of humic acids was 80-82%, fulvic acids - 13-15%, potassium content per K2O - 4-5%. The humic-fulvate complex (HFC) was used by spraying the plants 2 times, the first time in the seedling phase, andfor a second time -3 days after. A 15% solution of HFC was used. The treatment was carried out at the rate of 3, 6, 9 l / ha or 450, 900 and 1350 g / ha for the active substance (HFC). The flow rate of the working solution was 300 l / ha. It has been found that the use of the humic-fulvate complex contributes to an increase in the dynamics of growth and development of basil plants, the content of essential oil is 1.1-1.2%, green weight 0.9-1.1 kg / m2, dry weight - 250-280 g / m2. Foliar treatment of basil plants is recommended to be carried out with a humic-fulvate complex in a dose of 900 g / ha to increase the content of essential oils in the green mass.