The effect of Farmayod on nematodes of different trophic groups in vitro and in vivo

The purpose of the research is to study the effect of Farmayod on nematodes of different trophic groups, including rootknot nematode larvae, in vitro and in vivo.Materials and methods. The object of the research were larvae of the root-knot nematode Meloidogyne incognita obtained from the roots of infected plants from the Vladimir Region. The study of the effect of Farmayod in three concentrations was carried out in laboratory, using the biotest method on pumpkin plants. The effect of liquid Farmayod on the viability of nematodes of different trophic groups was studied in vitro and in vivo.Results and discussion. Liquid 0.1% Farmayod showed phytotoxicity, and not a single plant germinated. The drug in the form of a 0.01% solution showed phytotoxicity but to a lesser extent. The root system was less developed (60%) than in the control. The plant height was also 15% less. Farmayod at a concentration of 0.01% did not have phytotoxicity and reduced meloidoginosis versus the control. The biological efficacy of such dose was 56% higher, and the plant height was 30% more. The drug at a concentration of 0.01% had no effect on the plants damaged by meloidoginosis due to its phytotoxicity and poorly developed root system of the plants versus the control. Thus, at low concentrations, Farmayod acts on plants as a trace element necessary for plant vegetation, which affected the size of the plant. On the other hand, it can significantly reduce the infection of pumpkin roots with root-knot nematodes. Since this concentration is not toxic to nematodes, it can be assumed that the drug affects the nematode indirectly through the plant.