ABSTRACT.
The study analyzed the results of studies on the effect of ultrafine particles of silver and iron on
pathogenic soil biota. Thus, Ag has an antimicrobial and antifungal effect, which is due to its ability to interact with the
cells of pathogenic microorganisms and disrupt their metabolism. And the positive effect is that silver ions absorbed by
plant roots can increase enzyme activity and accelerate biochemical processes. This leads to improved metabolism and
increased plant resistance to various unfavorable factors.
Studies of a series of dilutions of ultrafine particles of silver and iron oxide showed that the treatment of wheat
seeds significantly reduces the contamination of seed with phytopathogens. And the greatest fungicidal effect was
shown by ultrafine particles of iron oxide at a concentration of 10–4 mg/l.
KEYWORDS: phytopathogens, Ag, Fe3О4, Triticum aestivum L.