Influence of plant growth-promoting bacteria and green manures on the degreeof weed infestation in Triticum spelta in organic farming

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 dem
onstrated after application of BC II together with green manures from a mixture of Trifolium pratense with Lolium multiflorum and from Trifolium pratense.