Biological activity of soybean seed lectin at the spraying of Glycine max plants against the background of seed treatment with pesticide containing fipronil, thiophanate-methyl, pyraclostrobin as active substances and rhizobial bacterization

Preparations for protecting plants, particularly those with fungicidal activity, continue to be relevant in agricultural production. They are used effectively combat phytopathogens and ensure high yield of cultivated plants. However, they among the anthropogenic factors which impose a heavy chemical load on ecosystems. Data about effects pesticides physiological parameters plants essential understanding main regulatory mechanisms as preconditions phytotoxic state compounds, well greater substantial functional condition implementation adaptive potential during post stress. An important task – both practically theoretically conditions action fungicide seeds - is studying possibilities application phytolectines biologically active compounds broad spectrum action, including effect, spraying legumes order stabilize their development, effective functioning legume-rhizobial symbioses cause fuller realization productive against background decrease pressure agrocenoses. Therefore, we aimed evaluate biological activity soybean seed lectin (according productivity soybean-rhizobial symbiosis) at Glycine max (L.) Merr. treatment pesticide, Standak Top insecticidal actions day sowing inoculation Bradyrhizobium japonicum 634b. We physiological, biochemical, microbiological statistical methods studies. determined that Top, applied soybeans were afterwards inoculated rhizobia, exerted negative tendency formation vegetative mass by beginning vegetation, though following phases ontogenesis, development reached level control. Nitrogenase symbiosis photosynthetic pigment complex (content chlorophyll carotenoids ratio) or significantly lower than control After (without use fungicide) phase two true leaves, there occurred significant increase symbiotic system total nitrogenase symbiosis, higher 1.91 1.79 times compared controls + content pigments (chlorophylls 1.12–1.45 times, 1.14–1.39 times) strong leaf apparatus (by 1.33–1.42 times). This caused highest 13.9% 10.1% fungicide, notable reliable increases absorption molecular nitrogen 1.72 1.52 according fungicide), (1.25–1.64 (1.12–1.42 leaves soybean, also actively developing vegetation (1.12–1.40 times), producing exceeded 12.8% 9.1% fungicide. pesticide can even (inoculation rhizobia) variant (rhizobia fungicide). indicates perspectives further studies phytolectins aiming decreasing ecosystems leveling out impact means protection symbiosis.