RELATIONSHIP OF ELECTRICAL CONDUCTIVITY OF SUBSTRATE AND CONTENT OF MAIN NUTRIENTS

UDC 630*114.25

  • Nosnikov Vadim Valer’yevich − PhD (Agriculture), Associate Professor, Head of the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: nosnikov@belstu.by

  • Yurenya Andrey Vladimirovich − PhD (Agriculture), Assistant Professor, the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: urenya@belstu.by

  • Granik Aleksandr Mikhaylovich − Master of Agriculture, assistant lecturer, the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: granik@belstu.by

  • Selishcheva Oksana Aleksandrovna − PhD (Agriculture), assistant lecturer, the Department of Forest Plantations and Soil Science. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: oksana_selishchava@mail.ru

DOI: https://doi.org/10.52065/2519-402X-2021-246-11-88–92

Key words: peat substrate, nutrients, electrical conductivity, acidity, correlation coefficient.

For citation: Nosnikov V. V., Yurenya А.V., Granik A.M., Selishcheva O. A. Relationship of electrical conductivity of substrate and content of main nutrients. Proceedings of BSTU, issue 1, Forestry. Nature Management. Processing of Renewable Resources, 2021, no. 2 (246), pp. 88–92 (In Russian). DOI: https://doi.org/10.52065/2519-402X-2021-246-11-88–92.

Abstract

The article presents the results of studies of the dependence of the electrical conductivity of the water extract of the substrate on the content of the main nutrients in it. It was found that the value of the electrical conductivity naturally increases with an increase in the content of nitrate ions (the correlation coefficient was 0.661), while there is no clear dependence of the electrical conductivity on the change in the content of ammonium ions (the correlation coefficient is 0.052), however, when analyzing the content of total nitrogen, such a regularity traceable (correlation coefficient – 0.660). A stable dependence of an increase in the value of electrical conductivity is also traced with an increase in the content of potassium ions, phosphate ions, as well as the total content of nutrients (the correlation coefficient is, respectively, 0.628, 0.646, 0.761). Thus, using the express method of analyzing the electrical conductivity of the substrate, it is possible to judge the amount of complex mineral fertilizer introduced into it. This method can be considered as a method for controlling the content of basic nutrients in the preparation of substrates, with the exception of ammonium nitrogen.

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