Chloropyll fluorescence intensity dependence  on biological features of sugar beet hybrids and plant growth stages is described. Accuracy of a method of rapid diagnosis of the photosynthetic apparatus status of sugar beet plants are evaluated.

Scientifically validated items of growing technology disclosed for cos lettuce marketable products in the conditions of Forest-Steppe of Ukraine. Impact of environmental factors onto growth and development of Lactuca sativa var. longifolia L. plants. Sowing terms established for the seed of cos lettuce at field-seeded growing. Development parameters are quoted for plant productivity indices and marketable product indices for cos lettuce of national and foreign breeding. According to VCU characteristics a typical model has been designed for the cos lettuce indices of suitability for dissemination in Ukraine.

Results of study focusing on impact of environmental factor – time of spring vegetation renewal (TSVR) of soft winter wheat on growth and development of plants, crop productivity and modern varieties response are presented. It is found that in the central part of the Right-Bank of Forest-Steppe of Ukraine this factor is important and it should be considered in planning of spring and summer care techniques, fertilizer system, especially at spring fertilizing, use of pesticides and growth regulators, in taking a decision on reseeding or underseeding of space plants. At the same time, it was determined that the environmental effect of TSVR was not occurred every year, thus it is not always possible to forecast the type of plant development. But in such years it is possible to influence the processes of plants growth, development and survival in spring and summer periods and the formation of their productivity by introducing such intensive technologies as differential crop tending, mineral nutrition optimization, the use of plant growth regulators, trace nutrients, weed, pest and disease control agents.

Chloropyll fluorescence intensity dependence on biological features of sugar beet hybrids and plant growth stages is described. Accuracy of a method of rapid diagnosis of the photosynthetic apparatus status of sugar beet plants are evaluated.

Assumption is made that identification of valuable genotypes is possible in specific stability points of phase-parametric systems, that is, when the effect of dynamism acquires gradient and discrete anisotropic composition by way of converting the phenotype variability in the temporal and parametric and characteristic specific vector-spaced system. Devices have been suggested (electronic board for the characteristics spectral expression, 3D configuration of a characteristic variation series) for displaying the location sample parametric pool in the general statistic range of quantitative characteristics. A characteristic has been detected (number of seeds in a pod) that carry the traits inherent in pseudo-qualitative and oligogenic characteristic. According to findings of the study, characteristics are identified that conform to various directions of economical use

Race-specific resistance of 19 common millet varieties that are firstly listed on the State Register of Plant Varieties Suitable for Dissemination in Ukraine in 2013 is assessed. It is found that almost half of the varieties are infected with all smut races, part of them is resistant only to the first group of smut races, and there is no variety to be resistant to all races of this disease. It is concluded that common millet varieties are needed to be examined for resistance to smut races

For the resistance to a soil drought in the early stages of seed germination the key role plays the primary root system: an activity of seed germination, the number of seminal roots and their length, dry weight of roots and coleoptile length and also the degree of cold resistance at the seedling stage. The stages and methods of the creation of six-row medium-grown barley varieties Vakula and Helios and semi-dwarf varieties Ros and Halychanyn are described.

It is determined that crop cultivation systems (continuous culture and its interruption by crop rotation links with different fertilizer backgrounds) influence the productivity and economic efficiency of tomato and cucumber cultivation under rainfed conditions in Right-Bank of Forest-Steppe zone in Ukraine. Reported calculations show the increased level of profitability of the continuous crop growing in case of interruption by annual crop rotation link against the background of mineral nutrition, but additional organic fertilizers allow to get more profit per unit area.

The results obtained during the study of resistance of promising gooseberry varieties to Septoria leaf spot in the Western Forest-Steppe of Ukraine are described. Variety samples were divided into groups by the resistance to disease. Among them none was found with complete field  resistance. Sladkiy proved to be highly resistant variety. Resistance above the average is typical for Berill, Grushenka, Kooperator, Lehin, Malakhit, Rodnik, Shennon varieties. Hrossulyar, Kamenyar, Karat, Knyazhych, Kolobok, Krasnoslavyanskiy, Laskovyi, Mazershkota, Russkiy, Svityaz, Severnyi kapitan are varieties of average resistance to Septoria leaf spot. Zyelyonyi dozhd, Zlatogor, Invikta, Kubanyets, Nesluhivskyi, Slivovyi are characterized as low resistant ones.

Peculiarities of the formation of the collection of lettuce (Lactuca sativa L.) varieties with reference characteristics are considered. Methodological requirements for the formation, grouping, maintenance, use and updating of the examples varieties collection for identifi cation of all lettuce varieties were scientifi cally grounded. Varieties with relevant morphological characteristics and notes of their expressions for vegetative and generative organs of lettuce plants were identifi ed. The use of formed examples varieties collection for the table of characteristics in the Guidelines for the conduct of tests for distinctness, uniformity and stability for lettuce (Lactuca sativa L.) varieties was confi rmed.