The national map of soil organic carbon stocks in the 0-30 cm layer in Ukraine with resolution of 1x1 km was created based on information on organic carbon content in soils of Ukraine, as well as archive soil maps, remote sensing materials, additional characteristics of soil and climate indicators using digital soil mapping technology. Modeling of the distribution of organic carbon stocks in mineral soils was carried out using the Random Forest algorithm, in the peat soils - the kriging method. The national map of organic carbon stocks in the soils of Ukraine was developed in accordance with the specifications of the Food and Agriculture Organization of the United Nations (FAO) and integrated into the Global Soil Organic Carbon Map of FAO (GSOCmap).

The methodological approach of determining soil contours by the method of aerial photography from an unmanned aerial vehicle (UAV) with a Pentax W60 camera is disclosed in the article. The essence of the definition lies in direct measurements of all channels of the RGB model in JPEG format. Features are shown when determining soil contours of different soil types on the territory of Ukraine in the form of statistical plots. The technique of UAV flight for accurate determination of soil contours is described and reduces the error when creating an orthophotomap as a basis for creating a soil map based on an orthophotomaplane.

The soil- ecological parameters have been determined for the totally developed brown mountain-forest and brown mountain-forest soils of the indications formingbioproduc-tivity and fertility of the forest biogeocenosis based on field and laboratorial researches in the Great Caucasus south-eastern part. The conceptual directions of the forest restoration works realization and timber soils monitoring, protection have been suggested on the basis of them.

In the conditions of experience model laboratory the biotesting method in the conditions of a temperature stress has investigated influence liquid the organo-mineral fertilizers (OMF) of various structure and concentration on indicators of viability and morphometric parameters of growth and development of a winter wheat (p. Triticum). The study of the biological activity of liquid OMF with direct influence on the test culture showed that they have the ability to exhibit both a growth-stimulating effect in the region of certain, rather low concentrations of 0.1 %, and an inhibitory effect of 0.5 %. As a result of the research it was established that not only the concentration, but also the magnitude of the temperature stress of liquid OMF influences the amount of stimulating action of the test fertilizers. This information is needed to assess the quality of fertilizers in connection with the problem of their certification.

The article presents data on the effect of drop irrigation of rice and irrigation by traditional permanent flooding on the dynamics of the content of basic nutrients. It is established that the dynamics of easily hydrolyzable nitrogen during drip irrigation is identical to its dynamics with constant flooding, and its absolute content, with drip irrigation, has some advantage over traditional irrigation by the method of constant flooding. The maximum content of this element falls to the middle of the growing season of rice with drip irrigation, which is very important for the growth and development of rice. Dynamics of the mobile form of phosphorus and exchangeable potassium during drip irrigation is more stable than in the case of constant flooding, where the higher range of vibrations is.

The article presents data on the account of the productivity and yield of cotton on irrigated serozems light Maktaaral district of the South Kazakhstan region with application of biofertilizer Green eco and preparation-adaptogen PA-2-1. The positive effect of these fertilizers was established depending on the dose of their application. The height of plants, the number of closed, half -opened and opened boxes of cotton per 1 m² was studied.

The aim is to investigate the effect of clay on the pH-buffer of sod-podzolic soils of light composition (cohesive and sandy loam). Emission-spectral, petrographic and thermal analysis applied in clay studies showed its high ameliorative qualities. It was determined that the introduction of clay into sod-podzolic soils of co-sandy and sandy-loam composition, as well as spreading over the surface with its further plowing into the arable layer, and locally by bands (clay mixed with soil) into the upper part of the subsoil layer promoted an increase in the content in the soils of physical clay. The increase in the content of physical clay in the local zones was noted especially, although the rates of application of clay itself to the soil were 5 times less than in the case of its traditional application in a random manner. Calculations show that the concentration of applied clay per kilogram of soil, in the doses given above, is 3,3-3,4 times higher for local application than for traditional application. Clay soil with the use of local technology significantly improves the acid-base regime in the soil. In local pH zones, the water content was 5,9-6,0 units, and already in the soil adjacent to it, this index decreases to 5,7-5,8 pH units. As the distance from local zones increases, the acidity of the soil increases, reaching the pH of the soil itself, namely, 5,3-5,4. The increase in buffer capacities in the alkaline and acid load ranges in the series is established: control clay 50 t/ha (spreading) clay 10 t/ha (locally). That is, there is an obvious regularity in the dependence of the acid-alkaline buffer of the investigated soil on the amount of clay particles in a unit of soil mass. Positive changes in the pH-buffer of sod-podzolic soils of light composition under the influence of claying indicate an improvement in the functioning of soil buffer mechanisms.

It has been determined that irrigated grey-brown soils have low anti-erosion durability. These soils after treatment with ionomer BO gains high anti erosion durability. The results of the determination testify that washing up speed increases with 0,045 m/sec. on the control till 0,081 m/sec at the dose 20,0 % of concentration with BO ionomer solutions. Irrigational washing up of the soil sharply decreases. Its water- physical properties improve, soil wetting regime and conditions of the agricultural cultivations feeding get better. As a result, ionomer use durability, of the structure to washing impact of water jet and flow transporting ability sharply increases what brings to the reduce of flow turbidity. While using anti-erosion watering technics as a result of keeping the soil from washing away and increase of agricultural crops all additional expenses are compensated and pure output is gained.

Precision farming is a new stage in the development of the agrosphere, connected with the use of geoinformation systems. At present, satellite images with high resolution are more widely used for study in agriculture, which is an innovation for Kazakhstan in the implementation of the tasks of precision farming. However, the presence and often-prohibitive costs of such images suggest an alternative product for this particular application in precision farming. In particular, images made by remote sensing platforms with low altitude of unmanned aerial vehicle (UAV) are a potential alternative, given their low cost of operation in monitoring the environment, high spatial and temporal resolution, and their high flexibility in image capture, programming. In the world, several studies have been carried out on the application of UAV images for precision farming. The results of these studies indicate that in order to provide a reliable end product for farmers, success in platform development, production, standardization of image georeference, and also in the process of information processing is necessary.