Exploring capabilities, uses and perspectives of pyroligneous acid in agriculture
Keywords:
pyroligneous acid; agriculture; inhibition; growth; plantsAbstract
Pyroligneous acid, obtained from the pyrolysis of organic matter, has emerged as a promising alternative in sustainable agriculture due to its properties and ability to improve soil quality. The evidence collected indicates that pyroligneous acid exhibits antimicrobial activity in vitro and in vivo against a range of plant pathogens, including fungi, bacteria and nematodes, showing significant potential for the biocontrol of diseases in various crops. Its use as a herbicide has shown positive results in inhibiting the growth of weeds without negatively affecting the desired crops. Furthermore, several studies demonstrate that pyroligneous acid induces systemic defense responses in plants, increasing their resistance to biotic stresses. Regarding direct uses in growth, it was observed that it can promote root growth, nutrient absorption and tolerance to abiotic stress, such as drought and salinity, improving crop performance in less than optimal conditions. Despite these promising findings, the review also identifies significant gaps in the research. Most studies have been carried out on a laboratory or greenhouse scale, making it necessary to validate these effects in large-scale field trials in different agroecological conditions (need for multicenter studies). Likewise, a greater understanding of the molecular mechanisms underlying the interactions of said compound with plants and soil microorganisms is required.
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