The optimal scheme and plant density of non-seedling tomato culture for seed production purposes in condition of Dagestan Studied were determined.

The article describes the manifestation of functional male sterility and its importance in the breeding of melons. Utilization of functional male sterility allows solving the problem effective hybrid seed production.

The article presents the results of a study of different varieties of grape leaves showing its morphological data and physico-chemical parameters. Studying shows canned grape leaf in various ways for the food industry.

The sustainability of potato production in the European countries was evaluated with the use of statistical methods. The effect of changes in yield and acreage on the production of the culture was evaluated. The stability of series levels was measured. The stability of production dynamics are measured with the use of trend models.

The influence of high temperature treatment of the seeds of vegetable Umbelliferae crops was studied. Features of seed germination and embryo development depending on incubation time were revealed. High-temperature treatment of seeds during 5 and 20 days inhibits the embryo development and seed germination.

In condition of Ramenskyi district (Moscow region) there was wide spreading of minstrel bug (Graphosoma lineatum L.), which is cause of yield loss of vegetable crops of Umbelliferae family. It was found up to nine mature insects per one plant. The larvae and imago feed mainly on buds, flowers, and seeds in all stages of its development. Because of damaging the seed productivity is decreased by 11-45%, the weight of 1000 seeds is decreased by 12-40%, germination energy is decreased by 13-100%, and germination ability is decreased by 10-82%. The germless seeds can range from 5% to 15 % and seeds without endosperm can range from 7% to 36 %.

The comparative analysis of different ways of application of the growth regulators “Obereg” and “Zavyazy” for white head cabbage has been conducted. The most effective was the double spraying by the mixed growth regulators at the stage of 6-8 leaves and the stage of the beginning of the forming of head of cabbage (400 g/ha and 60 ml/ha). The time step between the treatments is 30 days. The treatments have speeded up the stage of the industrial ripeness on 5-6 days as compared to control and have increased yield of cabbage. The increasing of the content of dry  atter up to 1%, sugars up to 0.5%,  nd vitamin C up to 1.9% mg% was recorded. The nitrate content in all variants was in range of the maximum permissible concentration.

The results of influence of topping on the development of the leaf surface and photosynthetic ability of plants of vegetable bean are presented.

The results of study of the variety structure of sugar corn in the Left-bank Forest'steppe of Ukraine are presented in the article. In the group of early-maturing varieties, the hybrid Spirit was found to be the most productive (5,4 t/hectare) and profitable (113,0 %) with energy efficiency ratio 2,9. The mild'ripening hybrids Bold F1 and Bonus F1 showed the productivity – 4,8-5,7 t/hectare, the profitability – 101,8-124,9 %, and the energy efficiency ratio – 2,60-3,06, respectively.

The results of pumpkin fruits storage in natural environment of storage facilities during six months are presented. The influence of soil type and pumpkin variety on the content of main chemicals and changes of fruit quality during storage has been found. After six month of storage as a result of fruit spoiling, the quality of pumpkin fruits was reduced up to 22,6$24,4% in cv. Krupnoplodnaya and up to 5.9$7.7 % in cv. Kroshka. The excess of nitrates and toxic elements above the maximum permissible values in the fruits of all varieties of pumpkin was not observed.