The results of study of influence of climatic conditions associated with vertical zonality on the defeat and spread of viral diseases, as well as on the yield of potato are presented. The use of favorable natural and climatic conditions of the mountainous province of the Dagestan Republic for establishment of production virus-free potato seeds allows to increase the potato production in Republic.

The collaborative work on growing of leafy turnip in condition of salad production line was conducted in ООО PKF «AGROTIP». The possibility of obtaining of ecologically safety salad turnip of cv. Selekta, Sapfir, and Biryuza at hydroponic system are shown. Data of yield, productivity, and content of ascorbic acid in green leaf of turnip growing in condition of flow hydroponic system are presented. The possibilities of using of tested turnip varieties in modern agrotechnological systems are discussed.

Data of origin of the creeping thyme (Thymus serpyllum L.), its morphological characteristics, and biochemical composition are presented. There is multipurpose utilization of this crop: seasonings, aromatizing of drinks, in perfumery, in medicine as antiseptic, in landscaping. The farming culture, biological specificity of creeping thyme, and characteristic of new cultivar Aleksandrit are described.

Based on hybrid and inbreed population of radish cv. Mokhovskiy using CMS-ogura nine lines with 100% of male sterility and fertile maintainers were selected. Using the multiplex PCR, the presence of cytoplasm of Ogura type in ms-lines and its absence in mf-lines were confirmed.

As a result of monitoring of causative agents of diseases of vegetable crops and studying of its species specification, the genus and species of fungi and bacteria, were found. Previously unknown in the Central region of Russia pathogens of carrot were identified: Sclerotinia nevales, Gleocladium roseum, Verticillium spp, Trichotecium roseum, Streptomyces scabies, F. nivale, F. chlamidosporum, F. equiseti, F. proliferatum, Chaetomium spp., Erysiphe umbelliferum, Erwinia carotovora. Main causative agents of diseases  of carrot during storage were also described: Alternaria infectoria, A. alternatа, A. arborescens, A. radicina, A. cheiranthi, A. corotiincultae, A. cinerariae, Embellisia spp., Nimbia spp., Cladosporium spp. It was found new pathogen for onion (Aspergillus niger), garlic (Fusarium semitectum, F. subglutinans, F. proliferatum, F.avenacium), red beet (Typhula ishikariensis), and radish (Drechslera Bondartseva).

Results of the study of possibility of cultivation of cauliflower and broccoli in the context of vertical zonality of Dagestan are presented. Physiological  characteristics, agriculture, and cultivation of early maturing varieties of cauliflower and broccoli during spring, summer, and autumn in condition of plain, piedmont, and mountain regions of Dagestan were studied. The high quality product of these crops was obtained in condition of Dagestan in the altitude of 1510 m above sea level.

Hormonal regulation is considered to be a unique mechanism controlling growth and development of living organism. The review discusses the correlations between pant hormonal status of non-accumulators and hyper-accumulators of Se with the accumulation levels of this microelement. The phenomenon of stimulation and redistribution of selenium as a result of phytohormone treatment, the peculiarities of phytohormones effect among different species and cultivars, and influence of plant sexualization on selenium accumulation are described in article. Data of hormonal regulation of selenium level for spinach, garlic, perennial onion, Brassica chinenesis and Valeriana officialis are presented in the review.

The review describes the aspects of lactic acid fermentation stages and actors have an impact on the process of fermentation of vegetables, the use of pure cultures of micro-organisms in the production of lactic acid fermented vegetable products.

The most effective types of treatments of freshly harvested potato tubers for dual cropping in conditions of irrigation of North steppe of Ukraine were determined. For the cv. Impala it is a pretreatment by water solution of Fumar and Gibberellin, water solution of Reastim and Gibberellin. For the cv. Zagadka it is a pre-treatment by water solution of Reastim and Gibberellin.

Ten varieties of winter garlic were tested for ability to accumulate macroand microelements. Genotype dependence was revealed. The most valuable varieties Strelets, Odintsovskiy Yubileyniy, Podnebesniy, Zaokskiy, and Replikant are characterized by high yield and content of macro- and microelements. The varieties Zaokskiy and Strelets are recommended for next breeding program as an initial breeding material.