Баят Хамидреза The authors have studied the influence of biofertilizers in the form of a humic-fulvate complex, humic acid and algae-based biofertilizers made of the Laminaria, Sargassum, Ascophyllum nodosum algae on the growth, development of the Iranian basil (Ocimum basilic content), as well as the content of essential oil and malondialdehyde. The experiment was conducted on in 2017-2018 in the laboratory of the Agriculture Faculty of Tehran University. Non-root treatments based on a working solution of 300 l/ha included control (water), humic-fulvate complex 900 g/ha, humic acid 300 g/ha, and algae-based biofertilizers 20 g/ha. It has been shown that, as compared with the control variant, the use of preparations based on the humic-fulvate complex, humic acid, and algae-based bio-fertilizers has a positive effect on the growth and development of basil, an increase in the biomass output by 12-17% and the yield of essential oil from 1 ha to 5-7 kg. The most effective biological products in terms of their effect on morphometric parameters and the content of essential oil in basil leaves are, first, a humic-fulvate complex, then humic acid, and to a lesser extent, an algae-based biological fertilizer. The authors have determined the content of malondialdehyde in the aboveground biomass of basil, which is a criterion for assessing the effectiveness of biological products by their response to oxidative stress and / or the degree of resistance to this effect. It is noted that the concentration of malondialdehyde during treatment with the humic-fulvate complex and humic acid decreases in 1.5-2 times as compared to the control variant, which indicates a lower degree of destruction of the lipid complex and higher strength of cell membranes.
Научная статья 
malondialdehyde