100 rape varieties and hybrids of domestic and foreign selection that have been grown in the different soil-climatic zones of the country were evaluated. The paper presents the results of study by their biochemical characteristics: content of protein, oil and its fatty acid composition. High-oil varieties of rape are identifi ed with high content of erucic acid in oil – for the technical purposes and those without or with its low content – for food industry.

Results obtained during the study of special features of cultivation and productivity of soft winter wheat varieties that differ by origin in the Steppe zone in Ukraine are presented. Relevance of the executed work was determined by ambiguous assessment and selection of available soft winter wheat variety assortment that is used in Steppe zone farms. Findings allow to find out  and expose to a greater extent unused reserves for increasing the croppage level. It was found in the process of the study that now according to comprehensive assessment the best varieties of a soft winter wheat for corn growers in the steppe zone are Smuhlianka, Epokha odes`ka, Kiriia, Zolotokolosa, Blahodarka odes`ka, Bohdana, Lyst 25, Rozkishna.

The article quotes data on fruits biochemical composition for 101 varieties of peach from Nikita Botanical Garden collection. 88 varieties have been singled out according to the composition of bioactive substances. Among those varieties the North China and Iran ecological and geographical groups prevail (52.3% and 37.5%, respectively).

The author presents the study results concerning the infl uence of different systems of primary soil tillage on weed infestation on lands withdrawn from agriculture in Polissia of Ukraine. It is found that in case of returning such lands to use ploughing leads to depletion of weed seed stock in the layer of 0–10 cm by 36,1%. Surface and combined tillage systems help to reduce pollution of this soil layer with weed seeds by 25,4% and 31,7% respectively. When using surface tillage, a very shallow buriel of vegetative and generative organs of weeds that are close to the soil surface foster their early regrowth and accelerated development.

Peculiarities of developing national varietal resources of Lupin (Lupinus L.) in Ukraine have been explained. Market monitoring for annual lupin species have been completed. Peculiarities for the conduct of lupin plant varieties examination on establishing their suitability for dissemination compliance with the criteria of distinctness, uniformity and stability according to the guidelines in force. The conditions for developing the Program of Field Trials of Plant Varieties Qualifying Examination are displayed. Species specific and quantitative composition of fodder crops detailed as included into the Program. Essential soil and climatic cultivation areas proposed. Lupin uses outlined, as well as its application in various branches of national economy and value for establishing strong fodder backgrpund for cattle breeding. Prospective options of using lupin crop are spotted in connection with new plant varieties created, which seed by technological properties could be used for the purpose of preparing dietary foodstuff

The results obtained during observations of the growing season of pea collection varieties in different years in terms of interphase periods are presented. The dependence of the growing season length for varieties of various maturity groups on the duration of certain phases of plant growth (seedling, flowering, ripening),  ambient environment (temperature, humidity, daylight hours), processing (seed preparation, line production maintenance) and genetic factors (sequential node of the first inflorescence formation) are shown. According to the study   results the varieties-sources of «growing season length» characteristic were specified that have been used as components for breeding in the selection process when creating new domestic varieties.

The analysis of commercially valuable indices of plant varieties for energetic use was carried out and the necessity to determine energetic indices during the state scientific-and-technical examination is substantiated. In order to explain the requirements for registration of new varieties of energy crops concerning the defi nition of indices of ability for distribution, the collection of species and hybrid forms of willow was used. Factors that prove the economic and environmental advantages of energy willow cultivation for biofuel are specifi ed.

Peculiarities of developing national varietal resources of Lupin (Lupinus L.) in Ukraine have been explained. Market monitoring for annual lupin species have been completed. Peculiarities for the conduct of lupin plant varieties examination on establishing their suitability for dissemination compliance with the criteria of distinctness, uniformity and stability according to the guidelines in force. The conditions for developing the Program of Field Trials of Plant Varieties Qualifying Examination are displayed. Species specific and quantitative composition of fodder crops detailed as included into the Program. Essential soil and climatic cultivation areas proposed. Lupin uses outlined, as well as its application in various branches of national economy and value for establishing strong fodder backgrpund for cattle breeding. Prospective options of using lupin crop are spotted in connection with new plant varieties created, which seed by technological properties could be used for the purpose of preparing dietary foodstuff

The author presents the study results concerning the infl uence of different systems of primary soil tillage on weed infestation on lands withdrawn from agriculture in Polissia of Ukraine. It is found that in case of returning such lands to use ploughing leads to depletion of weed seed stock in the layer of 0–10 cm by 36,1%. Surface and combined tillage systems help to reduce pollution of this soil layer with weed seeds by 25,4% and 31,7% respectively. When using surface tillage, a very shallow buriel of vegetative and generative organs of weeds that are close to the soil surface foster their early regrowth and accelerated development.