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Abstract

The paper discusses the impact of pesticides on the biological activity of soils, as well as an environmental assessment of the state of light chestnut soils by the Kazakh Research Institute of Agriculture and Crop Production with the aim to es-tablish diagnostic indicators that reduce biological activity. The study covers physical, chemical and biological properties of soils under crops of winter wheat in the light chestnut soil in the South-East of the Republic of Kazakhstan. The content of pesticides in soil samples was determined using the gas chromatography mass-spectrometric method. The paper shows results of the chromatographic analysis of soil samples regarding the content of pesticides. The study of changes of light chestnut soil biological activity was conducted to determine their relative resistance to pesticide contamination. Data ob-tained revealed the degree of light chestnut soil resistance to pesticide contamination. The study also identified species of soil invertebrates, as well as soil enzymes that should be used as bioindicators for the monitoring of the contamination with pesticides. Results obtained expand knowledge about changes in the biological activity of light chestnut soils due to pesti-cide contamination in the ecosystems of South-East Kazakhstan. In contrast to abundance indicators, the results suggest that the species composition of soil organisms can be used as a criterion for a qualitative assessment of the soil exposure to pesticides.
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Authors and Affiliations

Zulfiya Tukenova
1
ORCID: ORCID
Mustafa Mustafayev
2
ORCID: ORCID
Mereke Alimzhanova
3
ORCID: ORCID
Turar Akylbekova
4
ORCID: ORCID
Kazhybek Ashimuly
5
ORCID: ORCID

  1. Al-Farabi Kazakh National University, Faculty of Geography and Environmental Sciences, Department of UNESCO in Sustainable Development, Almaty, Republic of Kazakhstan
  2. Azerbaijan National Academy of Science, Institute of Soil Science and Agrochemistry, 5, M. Rahim str., Baku, AZ10073, Azerbaijan Republic
  3. Al-Farabi Kazakh National University, Faculty of Thermal Physics and Technical Physics, Department of Physics and Technology, Almaty, Republic of Kazakhstan
  4. Abai Kazakh National Pedagogical University, Departments of Chemistry, Institute of Natural Sciences and Geography, Almaty, Republic of Kazakhstan
  5. Scientific Production Center of Microbiology and Virology, Almaty, Kazakhstan
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Abstract

The article presents research data on the amount of salts in the irrigated soils of the Mughan-Salyan massif, their composition, water-salt regime, and their forecast. It was found that the soils on the territory of the massif were saline to varying degrees. In general, the area of non-saline soils in the massif is 125,650 ha, mildly – 272,070 ha, moderately – 210,560 ha, highly – 125,850 ha, very highly – 109,450 ha and saline soils – 27,520 ha. The absorbed bases in the soils of the massif were studied, and it was determined that they change depending on the amount of salts as follows: in mildly saline soils, Ca – 57.82–68.31%, Mg – 25.26–36.28%, Na – 5.49–6.43%; in moderately saline soils – 56.77–65.76%, 27.03–35.58%, 7.12–7.94%, respectively; in highly saline areas – 54.05–64.75%, 24.94–43.67% and 9.19– 14.42%. As you can see, the soils are mildly and moderately saline.
The soils in the surveyed areas are saline to varying degrees (i.e., the average value of salts in the 0–100 cm layer of the soil varies between 0.25 and 1.00%). The biological product used in these soils contains a wide range of macro and microelements, humic acids, fulvic acids, amino acids, vitamins and enzymes that do not contain BioEcoGum mineral fertilisers. This biological product was used for the first time and one of the main goals was to study the improvement of water-physical properties of soils after its use. Therefore, the water-salt regime of the soils of the study area was studied on three experimental sites selected for the area, the number of irrigations for different plants, and their norms were determined taking into account the depth of groundwater in the soils and shown in tabular form. They are widely used in farms and these regions, taking into account the proposed irrigation norms and their quantity.
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Authors and Affiliations

Mustafa Mustafayev
1
ORCID: ORCID
Zulfiya Tukenova
2
ORCID: ORCID
Mereke Alimzhanova
3
ORCID: ORCID
Kazhybek Ashimuly
4
ORCID: ORCID
Farid Mustafayev
1
ORCID: ORCID

  1. Institute of Soil Science and Agrochemistry of Azerbaijan National Academy of Science, M. Rahim St, 5, AZ10073, Baku, Azerbaijan Republic
  2. Al-Farabi Kazakh National University, Faculty of Geography and Environmental Sciences, Department of UNESCO in Sustainable Development, Almaty, Republic of Kazakhstan
  3. Al-Farabi Kazakh National University, Faculty of Thermal Physics and Technical Physics, Department of Physics and Technology, Almaty, Republic of Kazakhstan
  4. Scientific Production Center of Microbiology and Virology, Almaty, Republic of Kazakhstan

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