The results of researches of soil tillage methods influence on winter wheat grain yield are presented in the article. It is determined that on high and medium cultivated soddy-podzolic sandy soil by this crop cultivation after the 1-st year of use clover against a background of nitrogenous fertilizers at the rate of N₇₀₊₅₀ plowing and chisel making essentially did not differ on this crop grain yield influence. A direct sowing technology (without main soil tillage) was reliably inferior to plowing in influence on winter wheat grain yield even at the additional nitrogen application at the rate of N₂₀.

The article presents the results of the influence of the biological pesticide Betaprotektin F distribution and disease development of the root system of sugar beet during vegetation and during storage. It is shown that complex application biofungicide during vegetation and before storage can reduce the spread of rot roots.

In the central part of Belarus, the cultivation of FAO 200-290 maize hybrids allows their harvesting during a month and a half at the maximum dry matter yield and its optimal content in cobs, stems and leaves.

The results of an analysis of winter triticale samples grown in 2011–2013 in competitive variety testing according with conventional and intensive cultivation technologies are presented in the article. The effect of additional agrotechnical methods on the efficiency of the productivity potential realization, variability of quantitative characters and resistance to diseases and abiotic stresses were evaluated. Using the correlation analysis, significant dependencies between yield and disease prevalence level were revealed. It was established that the methods of cultivation technology intensification contributed to higher yields of winter triticale, increase of crude protein and gluten content, resistance to phytopathogens and environmental stress factors.

Results of vegetative propagation of sweet sorghum in the invitro conditions is presented in the article. Regimes of sterilization for different explants of sweet sorghum is chosen. Modified composition of nutrient medium on Murashige and Skoog prescription for clonal micropropagation and rooting that provide high yield of plants.

In the article, the example of the different varieties and hybrids of sweet sorghum, the results of studies of the effect of the joint application of fertilizers and herbicides on yield of green mass and the content of total sugars in the juice of the stems culture. It is found that the integrated use of herbicides and fertilizers has a positive impact on the productivity of sweet sorghum plants.

In the article the characteristics of winter rye varieties included in the State register of the Republic of Belarus is given, the methods of the original seeds production is stated.

It was investigated the autosegregation on the basis of coloring of hypocotyls in 31 apomixis genitures of sugar beet. The part of unpainted (green) seedlings in the studied selections varied from 0 to 26,5 %. The studied genitures fall into 7 segregation groups, connected with distinctions in doses of prepotent and recessive alleles of a locus Рр defining production of pigments in fabrics of sugar beet. The greatest share of unpainted seedlings is marked out in genitures of plants with yellow pith of a root, the smallest – in root genitures with white pith of a root.

The article presents the research’s results of on effectiveness of the application of fertilizers for foliar fertilization and growth regulators fitovital during reed beet. The most efficiency of seed treatment table beet growth regulator fitovital and foliar fertilization of beet plants microelements. The effect on the yield and quality indicators, as well as the main indicators of economical domestic fertilizer for foliar fertilization and growth regulator fitovital not inferior to foreign analogues, which indicates good prospects for domestic products in the cultivation of table beet.

The article presents of application of growth regulators on the background of different doses of nitrogen fertilizers with different mechanism of action on yield and quality of flax fiber in seeds of flax variety Blackit conducted on loamy sod-podzolic soils of the Vitebsk region. It is established that when the principal use of the serone (1.0–1.5 l/ha) obtained maximum results stability of flax 4.8 points, seed yield of 6.6 to 7.4 t/ha, the yield of flax 66,9–68.6 t/ha, the yield of flax fiber is 13.4 27,3 kg/ha – total and 11.1–22,4 kg/ha – long fibers.

The article discusses the impact of human activities on the evolution of various types of arable land soils and change their potential fertility according to cadastral valuation of their productive capacity and agrochemical properties of arable horizons. States that human activities as the sixth factor of modern soil formation, contributes to the convergence of different soil types in terms of effective fertility.

The results of the research dynamics of main nutrients in plants false flax depending on the characteristics of fertilization. Established that plants accumulate more intense false flax main nutrients in the early stages of growth, ensuring normal growth and development of plants in the later stages of organogenesis.

In the article the data on the efficiency of a preparation Zarnitsa, SC (azoxystrobin 200 g/l+ epoxyconazole 187,5 g/l) OOO «Frandesa» Co. against spring barley main diseases: net blotch (Drechslera teres), powdery mildew (Blumeria graminis) and dark-brown spot disease (Bipolaris sorokiniana), and also winter triticale: powdery mildew, Rhynhosporium disease (Rhynchosporium secalis), Septoria leaf spot (Septoria nodorum), brown rust (Puccinia recondita) are presented.

The data on biological and economic efficiency of pre-emergent herbicide extracorn, SE (C-metolachlor, 312,5 g/+terbutilazine,187,5 g/l) application in soybean crops (3,0–3,5 l/ha) and lupine (2,0–2,5 l/ha) and also post-emergent lavina, SC (metamithron, 700 g/l) (2,0–3,0 l/ha) use in blue lupine crops are presented. Based on done researches a prolonged extracorn, SE herbicide action in high-protein crops against annual dicotyledonous and grass weeds is determined what has allowed to keep the crops clean during the whole vegetative period. At insufficient soil moisture or low efficiency of soil herbicides in blue lupine crops a preparation lavina, SC (2,0–3,0 l/ha) can be used for the crop protection against annual dicotyledonous weed plants at St. 2–4 leaves of the crop as a main or an insurance herbicide.

The evaluation of biological and economic efficiency of synthetic pyrethroids Decis Expert, EC and Decis Profy, WDG with the active ingredient deltamethrin on a phytophage complex number and harmfulness decrease in spring and winter grain crops is done.

It is determined that the preparations were high effective against spring, summer and autumn generations of frit flies, cereal beetles and grain aphids which were applied considering the pest development biology and number.

The results of studying the perspective herbicides efficiency for seed crops of perennial grasses protection against weed plants are presented. It is determined that in spite of high biological efficiency of herbicides used in timothy and perennial ryegrass of the first year use the preserved yield amount has made 16 % but in the majority of cases it was statistically not authentic or at the reliable index value. In seed crops of such light-requiring crop as slough grass not rendering a significant competition to weed plants, the herbicides application has provided with the weeds number decrease for 92,4–96,9 %, their weight for 92,4–99,8 % and getting statistically reliable preserved yield increase for 20 %.

The authors submitted the materials on average for three years according to the impact of various measures of basic podzolized black soil tillage in a five year rotation on weediness of peas crops, winter wheat and sugar beets.

The article presents the results of studies on the effect of productivity of flax straw, wrap and degreeof aging of flax stock on flax fiber quality and its technological characteristics.

In Belarus, blackberries grown in private farms, the most common is only one zoned varieties Agawam. This article presents the results of research in 2012–2014 blackberry and raspberryblackberry hybrids in the central zone for horticulture of Republic Belarus. As for complex economic and useful indexes was selected Belarusian variety of blackberry Stefan, which differs shoots without thorns, high productivity (4.0 kg / plant) and large-fruited (12.0 g), resistance to fungal diseases and early maturing productive (0.6 kg / plant) and large-fruited (6.1 g) raspberry-blackberry hybrid Tayberry.

The article considers the comparative assessment of the effectiveness of a mechanical method to stimulate branching of annotinous apple seedlings – remove (pinching) of the apical leaves, carried out with varying intensity of plant growth. It is determined that a greater effect is achieved by stimulation of branching during the most active plant growth in height.