The agroeconomic and energy efficiency of millet cultivation (brand Slavyanskoe) and paiza (Udalaya 2) with foliar application of the drugs Hydrogumat and Humorost at a rate of 2 l/ha in the phase of tillering and the beginning of panicle sweeping is shown. The processing of millet and paise crops with Humorost in the tillering phase is optimal: the yield of millet was 19,7 c/ha and paise – 13,7 c/ha which is 3,5 and 2,5 c/ha higher than the control variant (spraying plants with water). The introduction of Humorost in the tillering phase contributed to a decrease in the cost of 1 centner of millet and paize grain to 14,2 and 12,6 rubles, an increase in profit – to 175,1 and 108,6 rubles/ha, an increase in the level of profitability – to 62,5 and 63,0 %. The bioenergetic coefficient turned out to be the highest – 2,4 and 1,8 respectively.

The article presents the main characteristics of variety samples of white and yellow lupine in competitive testing for 2017–2019 on grain yield, protein content, duration of the growing season, tolerance to anthracnosis.

The economic efficiency of promising varieties of white and yellow lupine obtained at the Department of Selection and Genetics of BGSHA, belonging to various maturation groups, is presented.

A comprehensive point evaluation has been given for promising white and yellow lupine varieties, among which Rosbel, Mara and BGSHA‑81 have distinguished themselves with a profitability level of 155,4 %, 139,7 and 124,29 % respectively.

The article presents the results of calculating the economic and energy efficiency of the use of fertilizers, growth regulators and biological products on two varieties of spring wheat. High efficiency of application of foliar feeding of UAN with microfertilizer based on humic acids EleGum Copper and growth regulator Fitovital was noted.

The article presents the results of three-year field studies with narrow-leaved lupine varieties Pershatsvet and Yan to study the effect of macro-, micronutrient fertilizers, plant growth regulators and bacterial fertilizers on the dynamics of the intake of basic nutrients during the growing season, on crop yield.

The highest content of nitrogen, phosphorus and potassium in the dry biomass of plants by the phase of milky-wax ripeness is observed when Co (chelate), CuSO₄ × 5H₂O, MnSO₄ × 5H₂O are used in pre-sowing seed treatment against the background of N₃₀P₃₀K₉₀ + Phytostimophos + Sapronit + Epin.

The article presents research data on the biological and economic effectiveness of seed protectants in protecting winter rapeseed against the diseases. Protectants have helped to reduce their infection with fungi-pathogens for 84,5–100 %, increase laboratory for 11,2–22,0 % and field germination for 2,0–15,0 %. By reducing the development of diseases, pre-sowing treatment has allowed to keep additionally 8,2 cwt/ha.

The assessment of biological efficiency of insecticides in the control of number of lepidopterous cabbage pests was carried out. The protective effect of the preparation Herold, FRC against cabbage moth was 98,7 %, cabbage scoop – 99,3 %, turnpike – 99,9 %. The efficiency of the insecticide Avant, CE exceeded 99,0 % independently of the target. The range of activity of the insecticide Voliam Targo, KS was in the range of 95,0–100 %, the preparation Koragen, KS – 97,5–100 %, depending on the harmful organism. The maximum biological efficiency of the insecticide Fufanon, CE against Plutella maculipennis was 91,0 %, Mamestra brassicae – 88,9 %, Pieris rapae – 82,3 %.

Researches on economic efficiency of fungicides for etching of winter garlic before planting have been conducted. It was revealed that, on average, for 3 years of research, the treatment of cloves with fungicides Lamador Pro, KS and Insur Perform, KS contributed to an increase in the number of overwintered plants by 19,1 % and 18,5 %, reduced the prevalence of rot per bulb by 3,0 % and 3,6 %, allowed the garlic plants to form a yield, respectively, by 27,0 c/ha and 27,4 c/ha more compared to the control.

The infestation of zoned varieties and hybrids of winter rapeseed with pathogens is shown. It is determined that all studied varieties and hybrids are affected by complex diseases such as: Alternaria, Sclerotinia, Phoma root rot, gray mold, fusarium wilt and verticillatae, cylindraspis, powdery and downy mildew, snow mold.

The results of researches on studying the seed disinfectants study for corn protection against the diseases in the Republic of Belarus are presented. The preparations based on the active ingredients from the groups of triazoles, benzimidazoles, phenylpyrols, strobilurins, acylalanils have been evaluated. The seeds have been dominated by the fungi of the genus Fusarium, the infection rate with which depending on the year of researches and the hybrid has made 11,3–53,4 %. Seed contamination with the fungi of the genus Penicillium has reached 15,4 %. It is found that that the use of the dressing agents has resulted in the suppression of seed infection at the level of 69,3–100 % and contributed to laboratory and field germination, on the average, of 1,7–3,5 and 2,7–5,1 %, respectively. Corn seed dressing is effective in hypocotyls rot development decrease, blister smut incidence at the first stages of the crop development and has ensured grain yield preservation from 7,7 to 9,3 cwt/ha depending on the preparation used.

The article presents the results of the study of the varietal sortment of garlic of Belarusian and Russian breeders. Revealed more productive varieties of garlic with which further research work was carried out to identify more optimal agrotechnical methods for growing this crop with drip irrigation on sod-podzolic sandy loam soils.

The review provides an assessment of quality control systems and certification of planting material of fruit and berry crops abroad and in the Republic of Belarus.

There is a need for systematic quality control of planting material at all levels. First of all, it is required to ensure the full functioning of the production system of improved planting material in leading scientific organizations, and later in basic nurseries. The approbation of fruit crops should be carried out not just by specialists of seed inspections, but necessarily by specially trained approbators for each specific crop and scientists involved in selection and varietal studies.

The article considers the issues of sustainable development of the energy sector of the Republic of Belarus, based on the principles of development of a green economy and ensuring energy security. The most important task is the need to create such a national system that will maximize the efficient use of our own fuel and energy resources and reduce environmental damage.