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RESEARCH PAPER
Influence of plant growth-promoting bacteria and green manures on the degree
of weed infestation in Triticum spelta in organic farming
1
Institute of Agriculture and Horticulture, Faculty of Agricultural Sciences, University of Siedlce, Bolesława Prusa 14, 08-110 Siedlce, Poland
2
Faculty of Engineering and Economics, Ignacy Mościcki University of Applied Sciences in Ciechanów, Narutowicza 9, 06-400 Ciechanów, Poland
3
Department of Soil Science and Microbiology, Poznań University of Life Sciences, Szydłowska 50, 60-665 Poznań, Poland
These authors had equal contribution to this work
Final revision date: 2025-07-17
Acceptance date: 2025-09-04
Publication date: 2025-11-04
Corresponding author
Rafał Górski
Faculty of Engineering and Economics, Ignacy Mościcki University of Applied Sciences in Ciechanów, Narutowicza 9, 06 - 400, Ciechanów, Poland
Faculty of Engineering and Economics, Ignacy Mościcki University of Applied Sciences in Ciechanów, Narutowicza 9, 06 - 400, Ciechanów, Poland
Int. Agrophys. 2026, 40(1): 1-11
HIGHLIGHTS
- The use of bacterial consortia decreases the biomass of weeds
- Ploughing of cover crops supports weed reduction
- Bacterial consortia and green manures decrease dominant weeds
KEYWORDS
TOPICS
ABSTRACT
The research was conducted on an organic farm in Poland in 2019-2022. The purpose of the research was to determine the effect of plant growth-promoting rhizobacteria and cover crops plowed as green manure on the biomass, number, and species composition of weeds found in Triticum spelta grown in organic agriculture. Two factors were researched: I. Bacterial consortium (BC): control without the use of bacterial consortia; BC I: Bacillus subtilis + Bacillus amyloliquefaciens + Pseudomonas fluorescens; BC II: Bacillus subtilis + Bacillus amyloliquefaciens + Pseudomonas fluorescens + Azotobacter chroococum. II. Green manure: control without green manure; Trifolium pratense L.; Trifolium pratense L. + Lolium multiflorum L.; Lolium multiflorum L. The research was focused on the combined effect of plant growth-promoting bacteria with green manures on the degree of weed infestation in Triticum spelta grown in organic agriculture. The highest efficiency of weed control in Triticum spelta was demonstrated after application of BC II together with green manures from a mixture of Trifolium pratense with Lolium multiflorum and from Trifolium pratense.
FUNDING
This work was funded by the Ministry of Science and Higher Education Poland, grant number 29/20/B.
CONFLICT OF INTEREST
The Authors do not declare any conflict of interest.
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