The results of studies of methods of cultivation on the meadow grass seeds. The optimal timing, methods of sowing, as well as the most effective herbicides for weed control on the seed sown meadow grass that produces high quality products competitive with seed yield 3,4–4,0 q / ha level of profitability of 25–30 % .

The dynamics of dry matter and protein compounds in grain of different varieties of the winter wheat during seed-filling period and at dеad-ripe stage was studied. The received results of researches testify that the most intensive accumulation of dry matter in grain occurred to pasty state. The maximum indices of weight of 1000 grains observed in the wax stage. Synthesis of protein compounds continued over the time of 5–10 days after complete ripening of grain.

The results of studies on the effect of basic agricultural methods of cultivation of grain of Siberian millet (Panicum italicum) on sodpodzolic sandy soils south-western part of the country. Found that the highest grain yield at an average of 3.5 t / ha is formed under conditions in wide sowing seed rate at 1,5 million viable seeds per 1 ha when adding N₆₀R₆₀K₉₀. The influence of agricultural methods on biometrics Siberian millet (Panicum italicum) plants.

The article and estimation is driven 35 hybrids of pepper sweet on basic economic-valuable signs: the early, commodity, general productivity, middle mass of fruit. A veritable heterosis is certain on these signs. On results researches the best hybrid combinations are distinguished on the commodity and general productivity, with the high effect of heterosis.

The article presents the results of breeding work with flax oilseed RUE “Institute of flax.” The characteristic varieties of Ilim, Opus and Fokus results of their state variety trials. The characteristic varieties Fokus transferred to the state variety trials in 2014. The effect of high-quality features to parameters describing the physical and physico-chemical properties of the studied varieties of linseed domestic breeding.

In the researches on the sod-podzolic loamy sandy soil the application of new form of poly mineral fertilizers increased the yield of pea-wheat mixes of 8,9–9,9 tha-1 at the general productivity of green masses 33,1–34,1 tha-1, a recoupment of 1 kg NPK of 31,2–57,1 kg of green masses, yield of raw protein 1,06–1,11 tha-1, yield of fodder units 5,96–6,14 tha^-1.

The effect of complex fertilizers with micronutrient supplements and foliar fertilization on growth and development of plants, brown leaf spot development, productivity and product quality of carrots was investigated. Complex fertilizers and foliar fertilization carrots reduce brown leaf spot on 1,5–2,5 points and increase the productivity of this crop on 14,0–33,0 %, Standart production increased by 3,5–6,8 %.

In cucumber protected ground crop among herbivorous phytophages (consumers) prevail spider mite (Tetranychus urticae Koch.), tobacco thrips (Thrips tabaci Lind.), greenhouse whitefly (Trialeurodes vaporariorum Westw.) and cotton aphid (Aphis gossipii Glov.). Among them the most harmful are spider mite and tobacco thrips, which practically appear at the same time bringing an essential damage to plants. Cucumber association system structure is determined by seedling compartment type, the phytophages space redistribution at simultaneous cultivation of smooth-fruited and hillock-fruited hybrids, crop rotation (winter-autumn and summer-autumn), and phytosanitary state of the previous crop. The phyllophages complex formation depends on peculiarities of autotrophic plant development and crop rotation duration.

The specific composition of sucking phytophages of plum plantations under forest-steppe Ukraine conditions is clarified. It is determined that among aphids the most harmful is mealy plum aphid Hyalopterus pruni Geoffr. A degree of different plum cultivars colonization by aphid is shown. The evaluation of the insecticide efficiency in the harmfulness decrease of monoecious and dioecious aphid species is shown. Comparisons of the efficacy of insecticides from different chemical groups are shown. The most effective were insecticides from the group of neonicotinoids. Consequently, in the protection of plum orchards from aphids and fruit yield improvement is worth taking into account the period of insecticides used and a period of crop spraying, вecause in protection of the garden from aphids were more appropriate insecticides with severe systemic effects.

In the article the results of researches on studying the European corn borer (Ostrinia nubilalis Hbn.) harmfulness in corn crops in Belarus are presented. It is determined that corn plant damages resulting in steam breaking favor the highest decrease of biological yield structural elements. The economic thresholds of expediency of insecticides application, as an example, Ampligo, MSC (0,2 and 0,3 l/ha), Carate Zeon, MSC (0,2 l/ha), Veles, SC (0,3 l/ha) in corn cops cultivated for seeds, grain and green mass are calculated. It is determined that in seed crops it is expedient to use insecticides at low threshold pest number 0,005–0,01 egg laying /plant depending on a preparation price what corresponds to seed yield increase from 1,5 to 3,1 cwt/ha. The protective measures against the European corn borer at the cost of its harmfulness decrease in corn crops cultivated for green mass are justified at preserving 262,8–343,4 cwt/ha of green mass.

While conducting spring inspections in Kharkiv region Kharkiv district we have found 5 plant species which reserved cruciferous bugs: wild mustard (Sinapis arvensis), Sisymbrium, Descurainia Sofia, bittercress (Barbarea vulgaris) and blindweed (Capsélla), which were increasingly found on the perimeter of the fields and along roadsides. Sisymbrium, Descurainia and wild mustard (Sinapis arvensis) were found on the roadsides and along the perimeter of the fields with a density from 2 to 6 plants per 1 m². The population density of the cruciferous bugs on them have made from 1,4 to 3,2 individuals per plant. Blindweed was met on the roadsides and along the perimeter of the fields from 13 to 18 plants per m², which is 4–5 times higher compared with other cruciferous weeds. However, the density of cruciferous bugs on it did not exceed 0,1 individual per plant.

Specification of possibility of microfertilizer of Vuksal to compensate at plants of a sugar beet induced by high norms of application of herbicides chemical stresses was the purpose spent field small parcelle researches. It is established that high norms of entering of herbicides can induce chemical stresses at plants of culture which can be partially compensated spraying of crops by microfertilizer of Vuksal in 5 days after application of herbicides.

The estimation of winter wheat varieties for root rot resistance was carried out. It has been established that the extension of root rot on average for the years of research was 36,2–87,5 %, and the development – 11,5–29,6 % depending on the variety. Among studied varieties the largest root rot resistance showed varieties Liona, Viktoria Odes’ka, Syrena Odes’ka, Apogei Lugans’kyi, Zira and Podiaka. The varieties Ukrainka Odes’ka and Lytanivka distinguished as most hardy, because through high level of disease involvement they had the best productivity indicators.

The paper presents the results of a study of sunflower hybrids resistant to the drugs imidazoline group. The regularities of the manifestations of abnormal changes sunflower depending on the dose of herbicide application.