The baking properties of winter rye domestic varieties grain are rather unsteady and are largely dependent on the weather conditions during its filling and ripening. The main reason for the poor quality of flour from sprouted grain – the increased a-amylase ferment, which converts starch into water-soluble substances.

A wide inter and intravarietal variability of amylolytic activity of winter rye variety samples is determined by the researches which makes it possible to improve rye baking properties not only by intervarietal hybridization techniques but also by intravarietal selections.

The article presents the results of researches on a comparative assessment of efficiency of basic and resource-saving soil-protective technology of cultivation of corn on green material on the degraded peat soils of Polessya. It is shown that in conservation and resourcesaving technologies in making fertilizers in doses determined with consideration of the results of new methods of soil diagnostic use in the application of microelements and biologically active substances on the background of the protective culture is provided by the output of fodder units to 21.4 t/ha, digestible protein - 16.9 tons/ha and the exchange energy to 205 GJ/ha, which is higher than in the underlying technology on 30, 20 and 31 % increases profits 573 $/ha. To at least reduce the loss of soil organic matter.

In the article the comparative (between the rotations) field trial results on main soddy podzolic sandy soil tillage systems influence on its agrophysical properties at barley cultivation with meadow clover undersowing in seven field rotation cropping system are presented. Also the evaluation of studied methods and soil tillage systems on weed infestation and barley grain yield with meadow clover undersowing is stated.

The presents results of studies on the effect of different tillage systems (plowing, differentiated, mulching shallow tillage) and fertilizers in crop shot rotation corn-fallow-rowcrop performance of stocks productive moisture in the soil, weeding, its productivity and economic efficiency of cultivation field crops.

Based on research in the stationary experiment found that usage of prolonged subsurface soil tillage methods come amid increasing of density in the 10–30 cm layer of soil, which affects the absorption of moisture soil in the autumn-winter period and during the showers rain, it’s come amid unproductive moisture loss and as a result – decrease of yield. Soil panning lead to using of subsurface tillages causes of decrease of crops yield for 6–7%.

This article shows analysis results of morphometric germ parameters that have been studied on 5 varieties and 7 samples of seeding pea Pisum sativum L. with different types of leaf plate. The degree of correlation has been determined between a seeding plant yield and 6 indicators characterized development degree of germ organs such as a germ length, the lengths of epicotyl and hypocotyl, the radicle length, the average length of lateral root of plant and the number of all lateral roots. The direct relationship has been found between the crop yield and the average length of lateral root as well the number of all lateral roots. Detected regularity can be recommended for effective selection of the most productive plants at the beginning steps of creation of new seedling pea varieties.

The article describes the results of studies on the establishment of the possibility of obtaining of fourspecies forms of triticale by crossing the threespecies triticale with spelta wheat and the creation of fourspecies forms of triticale. In the results of the researches were first obtained fourspecies forms of triticale that is combine genetic material of three species of wheat and rye.

The article presents the results of growth regulators application against a background of different rates of nitrogenous fertilizers with different mechanism of action on flax fiber yield and quality in fiber flax crops cv Blakit on soddy-podzolic medium loamy soils of Vitebsk district. It is determined that with the preparation serone (1,0-1,5 l/ha) application a maximum result of fiber flax resistance – 4,8 points, seed yield – 6,6-7,4 cwt/ha, flax fiber – 13,4-27,3 cwt/ha – total and 11,1 -22,4 cwt/ha – long is obtained.

At the sod-podzolic light loamy soils of different degree of erosion studied the use of differentiated doses of nitrogen, phosphorus and potassium fertilizers on winter wheat. It was found that the erosive agrolandscape on sod-podzolic light loamy soils with high security P₂O₅ and K₂O increased security the most effective option in the fertilizer soil catena nitrogen fertilization is differentiated according to the degree of erosion of the soil, the planned yield and nitrogen losses as a result of runoff, phosphorus and potash at doses calculated to balance the positive elements in dependence on the supply of soil to varying degrees of erosion and erosion losses.

The article presents the results of the research of technical, economic, and cost-effectiveness of the three agricultural systems: industrial (control), ecological and biological in stationary experience.

Research has established optimization of soil ecological environment in the fields under the influence of ecological and biological agriculture. Technological risk with their introduction is to decrease the available forms of mineral nutrients in the soil and plant weediness fields increase. Perspectives biological agriculture limited by the availability of effective biological control agents of pest organisms in the fields, particularly weeds.

Least attractive to imago overwintered plants of varieties Adretta, Zhukovsky rannij and Svitanok kievskij (pest population ranged from 2,5 to 3,8 exemplar / leaf), they were also in a lesser extent palatability (pest-eaten leaf surface for 1 day, was 1,48–2,26 sm²/ekz. phytophage). Minimum daily intake leaves for imago summer generation was observed in varieties Adretta and Cardinal (3,62–4,16 sm²/ exemplar phytophage). Duration of larval feeding on potato plants varied from 627–728 insect-days (Svitanok kievskij, Arosa) to 317 insect-days (Sante). On average, classes for imago and larvae were less nutritious leafage of varieties Zhukovskij rannij, Sapho, Svitanok kievskij, Adretta, Sante and Cardinal.

In the article the results of laboratory research of physicochemical pesticides compatibility applied in bulb onion crops are presented. A possibility of combined application of insecticides Agropan, Concord, fungicides Bellis, Revus, Ridomil Gold MC, the immunity stimulator Ecosyl and liquid nitrogenous fertilizer KAS-32 used for bulb onion protection against a complex of diseases, pests, plant resistance increase is determined.

The article highlights rational methods of control of Acroptilon repens. Application of herbicides with biopolymer Liposam provides decrease in herbicidal loading in 2 time at preservation of high efficiency (97,1–99,1 %).

The article presents the results of studies on the influence of spray dressings microelements in phases of growth and development of plants on yield, quality and economic efficiency of cultivation of melon fruits in greenhouses RUE «Institute of vegetable grooving» and farm «Drujba and Co». The highest yield of fruit melons –21,6 t/hectares in the greenhouses of the Institute and 17.9 t/hectares under production conditions obtained by triple treatment plant melon by a preparation of Nanoplant on the background of the dose N₁₂₀P₈₀K₂₄₀. The yield increase in comparison with background option was 4,4 and 2,5 t/hectares, and net income of 21,06 and 11,02 million rub./hectares respectively.

The studies are designed imaging weeds of Belarus using GIS technology: the method of constructing thematic maps using a software package ArcView Gis 3.2a, which can be used to support management decision making in the organization of measures to combat weeds and planning the use of special protection chemicals plants.

The results of researches on studying the action of biotic factors (pests, diseases, weeds) and technological techniques on productive processes of fiber flax, spring rape and sunflower are presented in the article. The developed agrotechniques of the intensive technologies optimization allow to decrease essentially the damage level made by noxious organisms what gives an opportunity to raise in common the productivity of spring rape agrocenosis for 36,0-39,0 %, sunflower – 40,0-46,0 and fiber flax -39,0-45,0 %.