ORIGINAL RESEARCH
Effects of Different Bacillus Species on Seedling
Growth Using Kitchen Waste Compost Substrate
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1
Liaoning Academy of Agricultural Sciences, Shenyang 110161, China
2
School of Mechanical Engineering and Automation, Shenyang Institute of Technology, Shenyang 113122, China
3
Xinjiang Institute of Technology Two Mountains Theory and Research Center for High Quality Green Development
in Southern Xinjiang, Aksu 843100, China
Submission date: 2024-05-04
Final revision date: 2024-07-10
Acceptance date: 2024-07-24
Online publication date: 2024-11-22
Publication date: 2025-07-22
Corresponding author
Huaju Chi
Xinjiang Institute of Technology Two Mountains Theory and Research Center for High Quality Green Development
in Southern Xinjiang, Aksu 843100, China
Pol. J. Environ. Stud. 2025;34(5):5719-5726
KEYWORDS
TOPICS
ABSTRACT
This study investigated the effects of Bacillus subtilis, Bacillus amyloliquefaciens, and Bacillus
velezensis on the growth of cucumber seedlings using kitchen waste compost substrate. The results
indicated that B. subtilis and B. velezensis significantly improved chlorophyll content, leaf area,
and biomass of cucumber seedlings. However, these Bacillus species did not enhance root growth.
B. velezensis exhibited the highest growth-promoting effect based on the strength index and affiliation
function method. All three Bacillus species significantly increased the electrical conductivity
of the substrate but had no significant effect on the substrate’s pH. Additionally, they did not significantly
reduce the Na+ and Cl- content of the substrate. The Bacillus treatments significantly elevated the
content of alkaline dissolved nitrogen and fast-acting potassium compared to the control. However,
B. velezensis resulted in significantly lower effective phosphorus content than the other treatments.
Further research is recommended to address the residual salt ions from kitchen waste compost
in substrates or soil to ensure the safe and effective use of kitchen waste compost in agricultural
production.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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