The article presents the results of the laboratory investigation of the influence of high temperatures on water regime of red currant in Institute of Fruit Selection. It shows the dependence of water loss by leaves on the phenophase of plant development. High water loss by leaves occurs during the phase of ripening berries (July). Low water loss is noted during the active growth of shoots (June). Red currant genotypes: «Valentinovka», «Bayna» have a high percent of water loss in June and July. Genotypes «Shedraya», «Gollandskay krasnay», «Orlovchanka», «Dar Orla», «Selyanochka», «Osipovskay», «Belka» and «Jonker van Tets» have a low percent of loss water. The loss of water at the temperature shock is the important protective mechanism from over heat and death of plants. The results of the investigation of a degree of water restoration by red currant leaves in the periods of berry ripening and active growth of shoots are given. The most part of genotypes of red currant leaves have a high percent (>50%) of water restoration. Genotypes «Selyanochka» ,«Orlovchanka», «Dana», «Shedraya», «Belka» have a more 100% of water restoration. On the ground of the obtained results the following genotypes: «Belka», «Selyanochka», «Gollandskay krasnay», «Shedraya», «Orlovchanka», «Dar Orla», «Osipovskay» and «Jonker van Tets» are mostly heat resistant.

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 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).

Results of studying morphoagrobiological characteristics and properties of new high-protein variety of soft winter wheat Natalka are presented. It is determined that this variety successfully combines high natural productivity potential with genetically inherited the highest grain quality and positive reaction of protein accumulation. It can be classified as superstrong wheats by qualitative  properties. It belongs to intensive varieties, has higher winter and drought hardiness. This variety is characterized by wide agroecological plasticity. To realize genetic potential of productivity and qualitative properties variety sowings should be placed after the best forecrops with high soil fertility creation, implementation of intensive technologies and sowing at the end of optimal time for appropriate agroclimatic zones.

The article presents the results of studies on the impact of time of sowing and seed rate linseed varieties on yield and seed quality in terms of the central Polessye.

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.

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.

The results of three years study of the effect of sowing time and seed application rates on yield and grain quality of different varieties of winter wheat under the conditions of South Steppe of Ukraine were presented. It was found that winter wheat provides optimal combination of high yield and grain quality in case of sowing in October 10 with seed application rate of 5,0 million seeds/ha. The highest yield – 4,59 t/ha on average in 2011–2013 was obtained for the variety of Natalka when sowing in October 10 with seed application rate  of 5 million germinable seeds. With increasing seed application rate from 3 to 5 million seeds/ha, protein content in winter wheat was decreased by 0,3%, gluten – by 0,6%. The variety Natalka  formed the highest quality grains when sowing in October 20 with seed application rate of 3 million seeds/ha, in this case protein content was 15,8%, gluten – 32,9%. It is proved that early sowing time  – September 10 leads to yields reduction and grain   quality deterioration for all winter wheat varieties.

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.