Investigation on the impact of bioproducts on growth, yield, mineral and chemical composition of oriental tobacco
DOI:
https://doi.org/10.61308/PPUV3200Keywords:
tobacco, protein hydrolysate, microbial inoculant, ozonated oil, growth, yield, macronutrients, micronutrients, chemical constituentsAbstract
The use of bioproducts is a suitable alternative for safe food production and healthy environment, instead of the use of chemical fertilizers. The aim of the study was to investigate the effects of bioproducts with different composition (microbial inoculant Mycoplant®, protein hydrolysate (PH) Trainer® and vegetable oil treated with ozone Ozogea Strengthening®) on the growth, yield, mineral and chemical composition of oriental tobacco. The field experiment was conducted in 2022 at Tobacco and Tobacco Products Institute, Markovo. The experimental design was a randomized complete block replicated three times.
The vegetable oil treated with ozone had no a significant effect on the growth parameters and mineral composition of tobacco seedlings.
The compound NPK fertilizer and bioproducts Mycoplant and Trainer had a positive effect on tobacco growth, yield and concentration of macro- and micronutrients in the leaves. The ozonated oil had a weak impact these indicators. The NPK fertilizer significantly increased the yield of tobacco compared to the control (+19.3%). The bioproducts improved tobacco yield by 2.9% to 10% in comparison with untreated plants. The application of PH Trainer (800 ml/da) and Mycoplant significantly increased the yield of sun-cured leaves compared to the control. The microbial inoculant significantly increased the concentrations of P, K, Ca, Fe, and Cu in leaves. Concentrations of N and Ca were significantly higher than the control when protein hydrolysate (800 ml/da) was applied. The reducing sugars/nicotine ratio was better in tobacco from treatments with NPK fertilizer and bioproducts compared to non-treated control.
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