The information system is aimed at ensuring the optimization of crop requirements for soil cover properties, the ability to predict and adjust its individual properties for use in agricultural production. The created system is a scientific and methodological support for agricultural production and will allow significantly increase the economic efficiency of obtaining crop products with the least material costs.

The article describes the current state of the soil-resource potential of the arable lands of agricultural organizations in Belarus, including an assessment of soil fertility and the availability of arable land in the republic, regions and certain regions. The indicators characterizing the quantitative assessment of the soil-resource potential and their connection with the productive capacity of lands are established.

The article presents data on the quantity, sanitary condition, growth and development of shelterbelts in modern agricultural landscapes in areas with a high probability of water erosion and deflation processes. The directions of the formation of agroforestry-reclamation complexes through the organization of a system of protective plantings of different types and species on arable land, along roads, canals, etc., an increase in their protective functions and an increase in the level of protective forest cover of agricultural landscapes are indicated.

The article analyzes results of monitoring the snow cover of sloping lands experimental stations «Miazhany» and «Stokavyja pliacouki» for 2001-2019, the maximum potential runoff during snowmelt have estimated and the dependence of soil moisture at depths of 30-50 cm on water reserves in the snow have revealed.

In the article there are shows the influence of the density of arable layer of chernozem soil on the removal and use of the main nutrients by different sorts of spring barley and their productivity; calculated the economic efficiency on application fertilizers at various levels of soil density. It is proved that a high level of soil compaction (1,4 g/cm³) leads to a decrease in the assimilation of nutrients by barley plants, which leads to a decrease in crop productivity.

The article presents the results of long-term research to assess the impact of fertilizer systems on crop productivity, the duration of aftereffect of phosphoric and potash fertilizers and fertility of sod-podzolic sandy loam soil. It was found that a prolonged deficiency of one or another mineral nutrition’s element affects the agrochemical degradation and soil fertility. Studies have shown that when phosphoric and potash fertilizers are excluded from the fertilizer system, annual losses of mobile phosphorus and potassium are about 3 and 8 mg/kg of soil per year, respectively.

The results of Agrochemical Soil Survey for 2001-2016 showed the decline of mobile phosphate supply of arable soils and grassland in several regions of Belarus. The needs for improvement of P-fertilizer supply of potentially fertile Luvisol clay and loam soils are evident, as well as reduce the P-supply of poorer sandy soils with higher phosphate content. Differentiated norms of P-balance accordingly of initial phosphate content of different textured soils are proposed.

The data on the influence of systematic exposure of liquid manure of cattle and pig manure effluents on the indicators of humus state of sod-podzolic soils are presented. After 20-30 years the soils near of livestock complexes was established a positive trend in the change of humus state: the relative content of HA-2 increased by 3,1-5,7 %, the share of HA-2 in the sum of humic acids - by 9-22 %; the degree of humification of organic matter - by 6,7-8,4 % with the expansion of C_HA/C_FA - up to 0,70-1,00, C_HA-2/C_FA-2 - to 0,80-2,27 and a decrease in the indicator I_lab. - by 9-23 %, which indicated the stabilization of the humus complex and the strengthening of the sign of humateness of soils. When the period of application of liquid manure of cattle and pig manure effluents up to 10 years, signs of degradation changes in the composition of humus were revealed: the relative content of HA-2 decreased to 3,5-4,5 % of the C_tot., the share of HA-2 in the amount of humic acids - up to 22-26 %, the ratio of C_HA/C_FA - to 0,48-0,54, C_HA-2/C_FA-2 - 0,70-0,81, I_lab. increased in 1,5-2,0 times that testified to fulvate orientation of process of humus formation.

In the field technological experience on sod-podzolic sandy loam soil it was found that the most agroeconomically effective was the N₄₅+₃₀P₄₅K₇₅ application on the background of straw with non-root treatment with Agropon С growth stimulant: the yield was 11.3 t/ha, conditional net income - 485 USD/ha, profitability - 174 % at the cost of 1 ton of corn grain gain 47 USD. With this system of fertilizer, the content of humus and mobile forms of phosphorus and potassium for the years of study remained at the initial level or close to the one.

The article presents the data on the influence of various forms of sulfur-containing mineral fertilizers on productivity and grain quality of buckwheat and potato tubers when growing on sod-podzolic light loamy soil. The most effective forms of sulfur-containing fertilizers were found.

The article presents the data on the influence of various forms of sulfur-containing mineral fertilizers on productivity and grain quality of winter and spring rape (seeds) growing on sod-podsolic loamy sand soil. Most effective forms of fertilizers were established.

The article presents the results of studies on the effectiveness of using MicroStim liquid micronutrient fertilizers when cultivating winter wheat on sod-podzolic highly cultivated light loamy soil. It has been established that foliar top dressing of winter wheat with micronutrient fertilizers during the growing season increases yield, improves grain quality and is a cost-effective method.

Microbial composition A.brasilеnse + B. circulans + Т. longibrachiatum was found to be an effective inoculant for the treatment of spring barley and winter rye plants growing on eroded sod-podzolic soils on loesslike loam. Application of microbial composition resulted in the increase of grain yields of spring barley and winter rye as well as in the improvement of protein content in grain. Microbial composition beneficially influenced on plant growth, mineral nutrition and significantly decreased of plant root infections abundance and development.

The article presents the results of the study of the use of macro -, micro-elements, growth regulator and rhisobial inoculant in the cultivation of field peas on sod-podzolic loamy soil. The influence of factors on the yield of seeds, raw protein and digestible protein, profitability and net income was studied. The use of NPK fertilizer with B and Mo increased the yield of seeds of sowing peas by 4,5 c/ha compared to the introduction applicate of an equivalent dose of N₁₈P₆₃K₉₆ of ammophos and potassium chloride. Adob B and Ecosil on the background of N₁₈P₆₃K₉₆ increased the yield of pea seeds by 4.7 c/ha, and Microstim B and Crystallon - by 4,5 and 6,0 c/ha. Inoculation of pea seeds with rhizobial inoculants on the background of N₁₈P₆₃K₉₆ and N₁₈P₆₃K₉₆ + Microstim B provided maximum seed yield (36,6 and 37,1 c/ha), yield of crude protein (7,50 and 7,82 c/ha) and digestible protein (6,45 and 6,72 c/ha).