Ramil Sadigov SOIL-ECOLOGICAL FEATURES OF GRAY-BROWN (CHESTNUT) SOILS FORMED ON THE NORTH-EASTERN SLOPE OF THE LESSER CAUCASUS (WITHIN THE SHAMKIRCHAY RESERVOIR BASIN)

DOI: https://doi.org/10.15688/nsr.jvolsu.2020.3.4

Ramil Sadigov, Doctor of Sciences (Agriculture), Associate Professor, Department of Petrochemical Technology and Industrial Ecology, Azerbaijan State Oil and Industry University, Prosp. Azadlig, 34, AZ1010 Baku, Republic of Azerbaijan, This email address is being protected from spambots. You need JavaScript enabled to view it.


Abstract. On the north-eastern slope of the Lesser Caucasus, within the boundaries of Shamkir administrative district, the most common soils in the Shamkirchay reservoir basin are gray-brown (chestnut) soils. Since the commissioning of the reservoir, these lands have been intensively used as new irrigated areas under agricultural production. To some extent, non-compliance with planting norms when using irrigation can lead to a decrease in soil fertility parameters, soil degradation, and an increased risk of salinization. The main purpose of the study is to analyze the current state of the main physicochemical and fertility indicators of soils in the basin and the relationship between them in the gray-brown (chestnut) soils spread within the basin boundaries of the reservoir. Diagnostic indicators, agrochemical properties and results of their analysis of soil plots placed in characteristic places were analyzed in tables and explanations. The main indicators are humus, total nitrogen, phosphorus and potassium, granulometric composition (sand, dust, silt and clay fractions), soil environmental reaction (pH) and carbonate content (CaCO3), statistical analysis. The article has covered studies in dark, conventional and light gray-brown (semi-brown) semi-soils in three sub-areas of gray-brown (chestnut) soils, mainly distributed in the Shamkirchay reservoir. In each of the three subclasses, profiles are set in specific locations. The practical part has been implemented in 2 stages. During the field studies, 9 profiles have been excavated, relevant samples have been taken, and analysis has been performed to determine the diagnostic performance. The results of the analyses have been presented in the respective tables and have been analyzed in detail. All analyses have been carried out on the basis of modern methods.

Key words: agroecological assessment, ordinary gray-brown soil, dark gray-brown soil, light gray-brown soil, fertility parameters, granulometric composition, diagnostic indicator, soil profile.
Citation. Sadigov R. Soil-Ecological Features of Gray-Brown (Chestnut) Soils Formed on the North-Eastern Slope of the Lesser Caucasus (Within the Shamkirchay Reservoir Basin). Natural Systems and Resources, 2020, vol. 10, no. 3, pp. 27-33. DOI: https://doi.org/10.15688/nsr.jvolsu.2020.3.4

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