Abstract

Replacing chemical compounds with biologically derived bioproducts in agriculture can make a comprehensive contribution to achieving the goals of both the Paris Agreement and the Green Deal. Scientific literature contains a significant amount of data on the use of probiotics in agriculture, which facilitate the supply of nutrients to plants, stimulate physiological processes, and inhibit the development of pathogens. These products do not have a negative impact on the surrounding environment and can therefore be used in sustainable land management. This article analyzes the microbiological composition of a bio-input made from fermented nettle extract and the species diversity of the cultivable bacteria. It was found that this input is rich in bacteria beneficial to plants and soil (Clostridium, Paenibacillus, Frankia, Rhizobium, Bradyrhizobium, Azospirillum, Azotobacter, and others), some of which can be cultured under artificial conditions. Among the cultivable bacteria grown from the tested input, the majority were representatives of the Pseudomonadota (92%), and a small proportion were Bacillota (6%). Among them were a great many different bacteria beneficial to the soil ecosystem. Thus, there is considerable potential here for the use of these bacteria in the production of biological products.

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