In the article there are surveyed approaches to the use of biological - ecological potential of white head cabbage plants, given parameters of varieties adaptability and economically-valuable signs variability, depending on a temperature factor, water supply. The yield prognosis is worked out.

The system of accelerated seed reproduction for new variety of winter wheat Krizhinka, and its application into production during years 1997-2000, are adduced in the article. Application of this system allowed in year 2000 to grow about 20 thousands metric centner of original seeds, and to increase the planted area at the time of including of the variety to State Register of Plant Varieties of Ukraine till 50 thousand he.

Under investigation inflluence period of sowing and presowing processing on productionity seeds of dill.

Regarding to the unstable climate and diversity of the Ukrainian soils, approved by the authors Conception of adaptive planting systems foundation owing to the implementation of local, complex, integrated, selective-agro-technical programs, theoretical background and construction princi-pals of which described in the study, are grounded, for different ecological zones of Ukraine.

Ability of poly-unsaturated fatty Arachidonic Acid and Micosan bio-fun-gicide with 3% h.c.s.(alkali extract of alkilofraiic glucans mushroom - Fomes fomentarius) to oppress the pathogens' parasitism on the vegetable crops is experimentally proved. There is also studied biological efficacy of fungicides and their tank blends on the cucumber crop.

In the article revealed the scientist basis of vegetables plants nationality varieties resource via government registering of new varieties and their right protection.

The Article states forth the ways of post-war reproduction establishment and development, reorganization and activity of the Plant Variety Examination network almost during 80 years of its existence

On the base of meteorological data in different places of the varieties and combined interspecific hybrids testing, on the base of pathogen properties of the place of testing, conclusion was made regarding expediency of the test on phyto-resistance for potato forms under Carpathian conditions.

Essence of ultra early-rape harvest generation of melon's fruitage in conditions of the South of Ukraine by selection of new varieties and hybrids (Cucumis melo L.) is explained. Influence of terms of the melon picking-off to the open ground on the fruitage generating, and on their quality.

Sugar beet hybrids are considered as a factor of intensification of the beet-sugar branch. At the modern stage of development of agriculture under condition of reduction of sugar beet sown area, shortage of material - technical resources which influence the formation of productivity of sugar beet as a crop of intensive type, hybrids must have a high genetically conditioned biological potential of productive ability, resistance to pests and diseases, abiotic stress factors, must have broad adaptive abilities. Analysis of the modern sugar beet hybrids included bately in the state Register of plant varieties of Ukraine is presented. Transfer of the branch to the intensive way of development is possible only under conditions of a complex approach to solving this problem.