The article presents a comparative evaluation of different planting dates accessions of lettuce on the main economically valuable traits (long growing season, yield, biochemical analysis). The interesting forms are obtained in selection as a starting material for producing new varieties.

The research results of mineral fertilizers and growth regulators application of green bean cultivation (Phaseolus vulgaris L.) in the sod-podzolic sandy loamy soil are presented in the article.
The use of mineral fertilizers and growth regulators of stimulating effect has increased yield of green bean with high commodity output quality (bean and grain yield – 190.5–259.7 and 40.9–47.9 dt/ha respectively, crude protein in bean and seeds – 15.4–16.9 and 22.9–24.1 % respectively).

The assessment results of close breeding lines of seedless cucumber on the basis of morphological and economically valuable features are presented. Cucumber close breeding lines are selected, combining in their genotype the desired morphological and economically valuable traits:by tendency to parthenocarpy, leaf color, fruit color, fruit size, number of ovaries in the node, early ripeness, yield, early yield: L. 7, L. 12, L. 55/86, L. 86/104, L. 173/148.

The experimental results of plants effect nutrition area on the morphological indicators of rosette plants and yield of hybrid seeds of white cabbage are presented in the article. The fractional composition and sowing qualities of seeds are also included.

The main objective of researches is connected with studying of growth regulator and mineral fertilizers influence on productivity of garden strawberry. The studying results of growth regulator influence are given in the article by optimization of mineral food on productivity of garden strawberry varieties Florin and Evi 2 and fall-berring type varieties Borovitskaya and Bohemia. The berries of Borovitskaya variety were smaller but the quantity of floriferous shoots, efficiency and productivity are higher. Besides, the studied fruits differed in high content of solids, ascorbic acid and sugars that considerably affected fruits taste. The tasting analysis established the highest total point of variety berries Borovitskaya. As a research result, it was established that the planned productivity can be up to 30 t/ha of commodity berry of variety Borovitskaya of the superior quality and gross sale can grow to 2.125 million rubles.

The expediency of including compost prepared with thermoammonium method into turf substratum is justified. The substrata composition that allows growing tomato seedlings without inclusion of mineral fertilizers is established.

The results of the winter resistance estimation of winter garlic is presented in the article

Curative and culinary properties of giant hyssop anisic (Lophanthus anisatus Benth.) are universal and they can’t be overestimated as its impact on organism is equated to action of ginseng, and plant greens – irreplaceable spice. The lowland zone of Transcarpathia has a number of advantages and potential cultivation opportunities of this culture (climatic conditions, economical and organizational prospects). Nevertheless, the giant hyssop anisic remains rare culture in Ukraine not resolved the following questions: enrichments of specific and high-quality structure, studying of morphological and biological features of development and adaptive potential of plants of giant hyssop anisic, agricultural cultivation technicians, receiving a big crop and quality of raw materials irrespective of extreme climatic conditions that have been observed recently.

The research results in the greenhouses of 20 new varieties and 20 hybrids of pepper F₁ (Capsicum annuum L.) in 2016–2017 are presented in the article. Hybrids were created in the system of reciprocal recurrent selection. The prospects of this method usage are shown. The article presents data on a number of characteristics of varieties and hybrids. Valuable signs donors for further breeding usage are allocated.

The brown leaf mould is а widespread disease of garden сarrot. The agent of leaf mould had differentiation of strains structure for cultural-morphological features, at the same time strains differed on aggression.
The degree of stability of garden сarrot variety to the leaf mould is different and depends on the variety genotype.

Erysiphe comunis Grev., Сolletotrichum lindemuthianum Br.et Cav., Pea Seed-Borne Mosaic Virus, Bean Yellow Mosaic Virus are common diseases of leguminous crops. The article contains the assessment results for disease affect.

The creation of xeromorphic forms radish are substantiated in the article. The evaluation results of the initial samples of radish to the stressors group are given. The resources for creation of xeromorphic forms are allocated.

Observation of the development of plant inflorescences in 33 families grown from bulbs of 9 garlic clones, identified flowering plants in 7 families of 2 clones. The flowers looked normal, visited by polinators. Stamens were with anthers or with degenerated anthers that did not form pollen. In some families, flowers have degenerated, in others they have developed in microbulbs consist from hydrated tissues such as succulent garlic cloves, rather than dehydrated endosperm. The appearance of a sprout from an air bulb resembles a grain seedling. In the perennial culture garlic plants grow wild: deepen the stalk base, do not form bulb, develop weakened scape with small inflorescences.

S-cytotype first testcrosses had 90 % of plants with male sterility, more than ST, STN, SN, N-cytotypes found in the Skarb litvinov. With this in mind, the Skarb Litvinov variety open polinated population is good source of male sterile lines.
To create male sterility maintaining line B the self-compatible plants having pure N-cytotype should be selected from population of Vetraz variety. Due to low number (8 %) first inbred families having msmsN or MsmsN testcrosses and selfing can to be carried out manually. Inflorescences were isolated by polyester cages, astringed around with a cotton thread.

The research results on the effect of humate-containing liquid fertilizers with trace elements on yield, marketability and the content of nitrate nitrogen in the production of leaf parsley and coriander on green are presented.

The research results of the seed productivity of the collection of garden beans, with the selection of promising genotypes are given. For the selection of this culture, sources are identified based on such characteristics as the number of seeds per legume, the number of seeds per plant, the mass of seeds per plant, the mass of 1000 seeds and the yield.

The research results of the parameter of genotype breeding value for yield between mutant and hybrid samples of garden peas are given on the basis of which promising genotypes of this crop for further breeding work are selected.

The results of tomato plants formation in winter greenhouses growing a low-volume culture on mineral wool are presented in the article.

The main economic valuable characters of common hyssop new varieties (Hyssopus officinalis L.), which are included in the State Register of Varieties of the Republic of Belarus, are considered and studied.
The middle yield of the green mass of common hyssop variety Zaveya was 150–160 dt/ha with essential oils 0.69 %, variety Lazurit – 150–160 dt/ha and 0.43 %, variety Rozocvetkovyj – 160–170 dt/ha and 0,48 % respectively.
New varieties of common hyssop (Hyssopus officinalis L.) are characterized by a complex of morphometric, morphological and phenological characteristics and are recommended for agricultural production usage and household cultivation.

The research results of creation new lines for heterosis selection of watermelon are presented in the article. Eight new lines have been created and it will allow to create hybrids that meet changing market demands in a short time. The morpho-biological and economically valuable characteristic of lines is given, their combination ability is determined.

The research results of effect of various rates and methods of mineral fertilization, irrigation and non-irrigation backgrounds are presented in the article. Rates and types of micronutrients for foliage spraying for yield, marketability and biochemical composition of red beet are given.

As a studying result, the fertilizing methods under white cabbage and red beet on sod-podzolic light loamy soil, it was established that the greatest payback of products fertilizers of white cabbage and red beet is received at fertilizers application by carrying out foliage spraying.

The research results on the effect of protective-stimulating compositions of seed coats on the morphometric parameters of plants, yield and marketability are presented in the article.

The research results on the effect of rates use of complex fertilizers together with foliage spraying with microfertilizers on various backgrounds of moisture supply of the soil when growing garden carrots are presented. The optimal rates of fertilizers are given growing garden carrot without irrigation and during irrigation.

The materials of collection testing of cucumber, pumpkin, marrow and patty pan squash of domestic and foreign selection on the main economic and biological characteristics are presented in the article. The selected samples are used in varietal and heterotic selection.

The evaluation of 12 samples of hard rind pumpkin of Belarusian breeding on the main economic and biological grounds was carried out. The following samples were distinguished by seed production: Delta, Golosemyannopletistaya, Golosemyanno-kustovaya, Line 2-3, Line 2-4, Line 2-5. The biochemical composition of these varieties seeds and lines for the content of proteins, fats, carbohydrates, amino acids, fatty acids, vitamins, minerals was studied and their statistical indices were determined by the coefficients of variation (V%) and correlation (r).

The long-term research results of introduction aromatic and medicinal plants introduction are presented in the article. The mechanism of adaptation of objects to new soil and climatic conditions is studied.
On the basis of morphophysiological plasticity of species elements of their cultivation in the conditions of Belarus are proposed.