Effect of Tobacco Stem Carbon Based Fertilizer Compounded with Antagonistic Microorganisms on Growth and Disease Resistance of Tobacco
- Received Date: 20/03/2023
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Key words:
- tobacco stem carbon based fertilizer /
- Bacillus polymyxa /
- Bacillus subtilis /
- root black rot
Abstract: To clarify the effects of tobacco stem carbon based fertilizer compounded with antagonistic microbial fertilizers on tobacco growth and resistance,a plot trial was conducted at a tobacco base in Fengjie County,Chongqing. Tobacco stem carbon based fertilizer was selected to be compounded with Bacillus polymyxa and Bacillus subtilis. The effects of different fertilization treatments on agronomic traits,disease resistance and yield production value of tobacco plants were investigated. The results showed that application of tobacco stem carbon based fertilizer combined with Bacillus polymyxa and Bacillus subtilis at 1 kg/666.67 m2 had a certain promotion effect on the growth of tobacco plants. The effect of tobacco straw biochar on improvement of soil acidification was relatively stable,with soil pH increased by 0.64 and 0.61 units in 50 days of treatment. The efficacy of integrated control program with tobacco straw carbon based fertilizer on the control of root black rot was 67.8%. The synergistic effect of tobacco straw charcoal-based fertilizer and antagonistic microorganisms is important for improving the yield and quality of roasted tobacco,enhancing the disease resistance of roasted tobacco plants and the resource utilization of agricultural waste.