The studies were carried out with the aim of assessing the preventive effect of treatment of remontant raspberries with strains of bacteria of the genus Bacillus against mycoses of aerial organs. The research was carried out during 2016–2018 while field experiments on production plantings of remontant raspberries of the agricultural artel “Sady Sibiri” (Novosibirsk region). Plants were treated in the budding phase and at the beginning of fruit filling by spraying the aboveground system with a working fluid containing a bioagent at a concentration of 1 · 104 CFU / ml. The presence of a protective preventive action of saprotrophic bacteria of the genus Bacillus of B. amyloliquefaciens strains VKPM B-10642, B. subtilis VKPM B-10641 and a mixed preparation Fitop 8.67 against gray rot of remontant raspberries with a biological efficiency of 40–46% under conditions of provocative background was revealed. In protection against purple spot and leaf septoria, the effect of strains B. amyloliquefaciens VKPM B-10642, B. subtilis VKPM B-10641, B. licheniformis VKPM B-10562 with a biological efficiency of up to 39–66% was proved. The formulation Fitop 8.67 reduced the level of development of purple spotting of stems by 1.2–1.6 times. Strains B. amyloliquefaciens VKPM B-10642, B. subtilis VKPM B-10641 and Fitop 8.67. The use of it is promising as an ecologically safe method for managing the phytosanitary state of plantations, exhibited an effective and stable protective effect against mycoses of the aerial organs of remontant raspberries.

The common spider mite Tetranychus urticae Koch is a dangerous pest. This pest occurs more frequently on cucumber crops than other pests and damages more than 200 other plant species, including aubergine, pepper, tomato, lemon, chrysanthemum, rose and carnation. The specific conditions of the protected environment allow greater use of biological agents for pest control. The modern concept of natural plant protection involves a combination of several birth control agents used to suppress pest populations. In this study, the authors studied the effect of biological preparations on the survival of the predatory mite Phytoseiulus persimilis Athias-Henriot (Acari: Phytoseiidae) under laboratory conditions. A laboratory evaluation was made of the effect of the biological preparations Bitoxybacillin, 1% and Fytoverm, 0.2%. These preparations significantly reduce acariphage numbers when released immediately after treatment. The predatory mite showed higher sensitivity in the variant with Fitoverm, 0.2%. Acariphage numbers decreased, but not significantly when plants were treated with Biovert (1%) and the fungus strain Metarhizium robertsii. Thus, plant treatment and acariphage release should be carefully regulated when phytoseiulus is released because of the adverse effects of bio preparations. The results confirm the potential use of biological practices combined with the predatory mite Phytoseiulus persimilis against the common spider mite Tetranychus urticae.