Microorganism Strains, Environmentally Friendly and Biological Preparations Against Chitwood, 1949 and Their Impact on Fruit Quality and Tomato Crop Structure.

The primary aim of this research was to study the effectiveness of various strains of antagonist microorganisms and biological preparations against , in addition to their impact on the quality of tomato fruits and crop structure. Four microorganism strains and three registered environmentally safe nematicides were used in the experiment presented herein. The results showed that the strains F-22BK/6 and F-22BK/4 had the greatest biological efficacy, reducing the number of galls on tomato plants by 91.

Primary Screening of Microorganisms against (Chitwood, 1949) under the Conditions of Laboratory and Vegetative Tests on Tomato.

Highly adapted obligate endoparasites of the root system, root-knot nematodes ( spp.), cause great damage to agricultural crops. Our research is aimed at the assessment of nematicidal activity and effectiveness of antagonist fungal and bacterial strains against the most common type of root-knot nematode in the south of Russia.

Assessment of mutant tomato lines as a starting material for breeding varieties resistant to .

An assessment of 27 mutant tomato lines from four countries (Germany, USA, Russia, Bulgaria) was carried out for resistance to five strains under conditions of the South of Russia. Five strains of the fungus were isolated from naturally infected plants selected in five agroclimatic zones of Krasnodar Krai: Central - strain 1, Western - strain 6, North - strain 11, South Foothill - strain 12, Chernomorskaya - strain 13. The assessment was carried out in the field during 2018-2020, in a greenhouse and under the laboratory conditions three times for each studied strain.