According to the results of soil studies within the Shetsky district of the Karaganda region, the organic carbon stocks in soils are determined. Based on a 1: 200 000 scale soil map, a map of soil carbon stocks in absolute (t) and relative (t / ha) values was compiled. For 20 monitoring sites, carbon stocks in soil and plants for 2004, 2006 and 2008 were calculated, and a comparative analysis of carbon stock changes was carried out depending on the cultivation technologies used.

The broad information about grey-meadow soils of the Garabagh plain situating in the Kur-Araz lowland which is a main agricultural zone was given, the research consequences performed in the soils of the selected experimental area of the plain were registered, some diagnostic indices of the same soils were fixed. The investigations indicate that an area of the salinized soils increased under negative influence of the antropoghenic factors, phyusico-chemical properties of the degraded soils deteriorated. The humus quantity vibrates by 0,49-2,18 %, calcareous - 7,288,97 %, pH value -7,75-8,42 in the same soils.

The regularities of changes in the agrophysical properties of the soil during the cultivation of sugar beet by various methods of drip irrigation are examined in the stand. Also given from the change in indicators of water-resistant aggregates, depending on the methods of drip irrigation. With limited water resources, the problem of efficient use of water in Kazakhstan is of particular relevance. In this regard, research aimed at the development of farming systems that ensure the efficient use of natural and water resources, increase the productivity of irrigated arable land and are of strategic importance, both nationally and internationally, is of great relevance. There is a need for the intensification of agriculture, the use of new breakthrough science-intensive technologies for cultivating crops. As one of the most economical ways to use water to boost crops. Drip irrigation has an unquestionable prospect of application when using local runoff, in areas of complex shape, as well as in cyclic irrigation systems. Therefore, it is important to expand the scope of drip irrigation.

The article presents the results of research on vegetable crop rotation. Different types of biologized and diversified vegetable crop rotations have been developed and recommended for vegetable farms in the south-east of Kazakhstan. It is established that these crop rotations contribute to an increase in the productivity of vegetable crops by an average of 5-11 %. The positive effect of biologized crop rotations on the phytosanitary condition of the experimental plots was noted. The prevalence of pests in vegetable fields was reduced by 10-17 %. This reduces the pesticide load on plants and soil, ensures the production of environmentally friendly vegetable products.

The article presents the results of research for 2015-2018 on the black grain of southern carbonate in the LLP "NPS named after A.I. Barayev" on the impact of mineral fertilizers on the yield of spring soft wheat in grain and fruit-exchange crop rotations with zero technology of soil treatment. A comparative assessment of meteorological conditions of the growing period of the studied years, affecting the accumulation of productive moisture and the content of food elements in the soil, is presented. It was revealed that for all years of observation the largest content of productive moisture was observed in 2015 by zero pair - 168 mm, minimum, in 2016 by sternum flax in fruit-exchange crop rotation - 91,5 mm. The maximum increase in the harvest of spring wheat on versions without application of fertilizers, depending on the precursor and crop rotation, has been revealed. It has been established that in four years, the yield of spring wheat for the zero pair was 4,2-7,1 c/ha higher than for other predecessors. The largest increase in wheat harvest in the variants of application of mineral fertilizers has been determined. The introduction of ammophos in the dose of Р20 provided a crop increase of - 3.0 - 4,6 c/ha, and the highest profitability - 176 -323 %, regardless of the precursor and type of crop rotation.

The study of the use of mineral and organic fertilizers for potatoes is one of the most important problems. From this point of view, conducting research on the need to establish optimal doses and ratios of mineral and organic fertilizers should be assessed as a prerequisite in determining its basic properties, since the introduction of mineral and organic fertilizers for potatoes on mountain black soil has a positive effect on its yield and quality. Studies have allowed a certain combination of mineral and organic fertilizers to increase crop yield and improve its quality. The established dose of fertilizer application was recommended when potato was raised in the test area.

The article presents data on the influence of mineral fertilizers on the dynamics of nitrate nitrogen and mobile phosphorus in the soil and the yield of spring wheat on flax in grain and steam and fruit crop rotation. The content of nitrate nitrogen in the soil layer 0 -40 cm before sowing averaged 6.5 mg / kg; by harvest, regardless of the type of crop rotation, it decreased to 2-3 mg / kg soil. The introduction of ammonium nitrate in various ways and doses increased the content of nitrate nitrogen in the soil by 2-8 mg / kg. The content of mobile phosphorus in the soil layer of 0-20 cm before sowing was 24.3-29.2 mg / kg of soil, before harvesting it decreased by 2.4-11.5 mg / kg. The use of ammophos in stock (P60) and when sowing in rows (P20) increased the amount of mobile phosphorus in the soil by 2-7 mg / kg in comparison with the control. The yield of spring wheat in the control options in the grain-steam and fruit-crop rotation on average for 2016-2018. did not differ and amounted to 18.8-18.9 kg / ha. The addition of phosphorus fertilizer to the rows and to the reserve increased grain collection by 16 - 31 % compared with the control, the addition of nitrogen to phosphorus increased it by another 12 - 27 %.

The article presents experimental data on the effect of domestic bio-organic fertilizer "BioEcoHum" on growth, development and productivity of winter wheat. The efficiency of biofertilizer application in the processing of seed material and foliar feeding of plants was established. Containing humic acids, macro and microelements, growth stimulants, biofertilizer increases seed germination and stress resistance, stimulates plant growth, increases grain yield from 20 to 40 %, allows obtaining environmentally friendly products, and reduces costs. When using humic biofertilizers, the growth of humus in the soil is noticeable, which allows reducing its density, improving air and watering permeability, reducing the negative impact of high doses of mineral fertilizers, especially nitrogen.

The article summarizes the practical experience of the introduction of technology to increase the yield of spring barley on the basis of the use of Bioorganic fertilizers for the treatment of seed material and foliar feeding. Liquid Bioorganic fertilizer "BioEcoHum" made from biocomposite by enrichment with macro and microelements in plant-available form, which increases resistance to stress, stimulates plant growth, increases grain yield. The application of humic biological fertilizers improves the physical, physico-chemical properties of soils, its air, water and thermal conditions. By results of the conducted production tests of biofertilizers "BioEcoHum" is recommended for wide implementation in the southern regions of Kazakhstan in the cultivation of crops.

The article deals with the assessment of the state of fertility of arable soils using various elements of monitoring of agricultural land. It is established that the results of more than half a century of monitoring of agricultural land agrochemical service in the Omsk region there is a tendency to reduce soil fertility. The use of mineral fertilizers in the years of intensification compensated for the removal of nutrients by crops, and for some elements in particular P2O5 reached a positive balance. Currently, trends in the use of mineral fertilizers in the Omsk region are noted in a positive direction, which allows the region to maintain a leading position in agricultural production.