The results of field experiments on the efficiency of sprinkler irrigation in soybean cultivation for grain presents. It was found that due to the uneven distribution of precipitation, additional moisture is required in both dry and wet years. The irrigation rate varies from 600 m3/ha in a wet year to 1800 m3/ha in a dry year. Calculation of the economic efficiency of irrigation showed that the maximum profit of 1047 rubles is observed in the variant with the lower limit of soil moisture regulation of 80 % of the NW, while the profitability is 58.26 %. The average increase in soybean grain yield in this variant is 9.4 c/ha.

The current state of systems engineering in reclamation science is characterized by inten-sive development, generation and implementation of new ideas based on the system ideology. Not only system analysis, but also system synthesis has been developed in Russian Federation. Yu. I. Lypar developed the theory of system-structural design (TSD) based on the creation of fundamentally new systems with a priori given properties. Protection of territories from landslide danger involves the introduction of a complex of land reclamation measures. One of these measures includes the creation of holding anti-landslide structures. This article suggests a review of the SSP using the example of anti-landslide structures, although it is obvious that its scope is applicable to various types of land reclamation.

On the example of the mountain rivers of the Samur- Absheron massif, the Republic of Azerbaijan analyzed the consequences of anthropogenic disturbances of the river bed. The main role in the disturbance of the channel was played by the development of channel quarries of building materials (during for almost 25 years). The study site captured the lower reaches of the intake structure which of the built on these rivers. Trends in the development of the channel process are revealed before and during the period of the action of anthropogenic disturbances. The volume of sand-gravel material irretrievably removed from the bed has been estimated, the depth of deformations have been revealed. Аppropriate formulas were proposed to calculate the stability of the newly formed sustainable bottom slope, taking into account the physical and mechanical properties of the riverbed and the flow rate.

The article deals with the results of research on the influence of foliar fertilization on the structure of seed sowing and seed yield of meadow clover. The maximum yield of meadow clover seeds (2.1 c/ha) without undercropping with annual ryegrass on average for 2 years was obtained after MicroStimai application; the increase amounted to 23.5 %. In joint crops with annual ryegrass the highest yield of 2.4 c/ha was also noted in the variant with microfertilizer MicroStim; the increase amounted to 20.0 %.

In 2022–2024, the effect of carbamide-ammonia mixture (CAS), carbamide and farmyard manure on the growth dynamics of corn plants grown in crop rotation and repeatedly, depending on the prevailing weather condi-tions of the year, was studied on cultivated cohesive sandy soil. It was found that under arid conditions in May – June, plant height decreases by 1,4–1,5 times, and high doses of nitrogen (more than 90 kg/ha) do not affect their growth. With heavy rainfall in June, an increase in nitrogen application rates and nitrogen top-dressing have a positive effect on maize growth. The use of organic fertilizers contributes to a better growth of plants, especially with sufficient availability dur-ing their intensive growth. Spraying of CAS plants in the 7–8 phase of maize leaves, even when diluted to 8 % nitrogen concentration, causes severe burns of the leaves, which leads to a decrease in their height, and carbamide, when broadcast application of fertilizer, on the contrary, contributes to its increase.

The article describes a pond-storage for livestock stocks for utilization in irrigation fields due to preliminary accumulation, based on the stock technology of soil cleaning in the process of additional irrigation and as fertilizing irrigation. This will allow to include biogenic elements in the biological cycle and worsen the ecological state of the environment around large livestock complexes. However, the implementation of this technology requires the construction of a drainage network.

An analysis of the volumes of sewage sludge generated as a result of the activities of the main industries of the Republic of Belarus presents. Key sources of pollution are considered. It was established that the bulk of the sludge generated in the republic is sludge from industrial wastewater of food industry enterprises, which amounted to 50.0 and 70.7% of the total sludge volume in 2019 and 2020, respectively. The smallest volume of sludge comes from the mining industry, 2.2 tons, which is 0.003%.