Particularly valuable soils of Sokal chain

new site

This site is no longer updated!
The new website of the magazine is located at https://visnyk.lnup.edu.ua/

 

Visnyk LNAU: Agronomy 2019 №23: 207-211

Particularly valuable soils of Sokal chain

Haskevych V., Doctor of Geographical Sciences
ORCID ID: 0000-0002-1966-9519
Pshevlotskyi M., Candidate of Geographical Sciences
ORCID ID: 0000-0001-6611-6688
Mikhalchenko G., Master of Geography
ORCID ID: 0000-0003-2040-6035
Ivan Franko National University of Lviv

https://doi.org/10.31734/agronomy2019.01.207

Annotation

The category of particularly valuable soils includes soils with the best natural properties and fertility, the cultivation of crops in them is highly profitable and does not require significant additional costs. Such soils are characterized by high differential rent II, with the highest bonitet and normative value estimation.

The most valuable soils in the Sokal Chain include (Luvic Grayzemic Phaeozems) and Luvic Grayzemic Gleyic Phaeozems soils, Grayzemic Phaeozems and Greyzemic Gleyic Phaeozems, Haplic Chernozems and Gleyic Chernozems (Pachic) soils.

Particularly valuable soils of the Sokal Chain are characterized by a well-developed profile with a humus horizon of an average of 48–62 cm. The content of airborne fry agronomic-valuable meso aggregates 0,25–10,0 mm in size in the arable soil horizons is 31,08–49,87 %, and that of lumpy aggregates > 10 mm in size is 65,45–66,66 %. The unsatisfactory condition of the structural and aggregate composition of especially valuable soils of the Sokal Chain is confirmed by the structurality coefficient, which is 0,50–0,68. Degree of degradation of structural and aggregate soil composition is characterized as too high (crisis). The density of the structure in the arable soil layer is 1,38–1,53 g/cm3, the degree of mechanical degradation through re-densification is estimated as average, high and too high (crisis).

Humus content in the humus horizon of luvic grayzemic phaeozems is 2,4 % on average, podzolic chernozems – 3,1 %, haplic chernozems – 3,5 %, gleyic chernozems – 3,89 %. The content of humus in the arable layer of the studied soils is characterized as low and indicates the development of dehumification processes. Humus reserves in the arable layer of 0-30 cm make up 99.4–170.3 t/ha, in the layer of 0–50 cm – 132,0–273,5 t/ha, and in layer of 100 cm – 172,8–368,5 t/ha. According to indicators of a humus state, humus reserves at 0–100 cm are estimated as low and average. Salt pH in the arable horizon is 5,4–6,3, water pH is 6,6–7,1, reaction of the soil solution is mostly close to neutral.

The use of especially valuable soils requires the use of soil protection technologies, cultivation of no-till, minimization of the load on soils, crop rotation structure observance, and introduction of their state monitoring.

Key words

Sokal Chain, particularly valuable soils, structural and aggregate composition, humus content, degradation

Full text

pdf

Link

  1. Gavrysh N. S. Use, reproduction and protection of soils in Ukraine: theoretical and legal aspects: monograph. Odessa: Legal literature, 2016. 396 p.
  2. Haskevych V., Pschevlotsky M. Soil-resource potential of Belzshchyna: present state and problems of conservation. Belz and Belzskaya land: scientific journal. Belz, 2006. Issue II. P. 112–120.
  3. Haskevych V., Pschevlotsky M., Panchoha A. The meadow-chernozem soils of the Sokal Region. Genesis, Geography and Soil Ecology: Jour. sciences works. Lviv: Publishing Center of Ivan Franko National University of Lviv, 2013. Issue 4. P. 32–41.
  4. Kanash O. P. The are returning to the problem of especially valuable lands. Land Management and Cadastre. 2011. № 1. P. 53–59.
  5. Land Code of Ukraine: as of October 25. 2001 / The Verkhovna Rada of Ukraine. Lviv: Ukrainian Technologies, 2001. 80 p.
  6. Martyn A. G, Yevsyukov T.O. Particularly valuable lands: modern problems of definition and protection. Land Management and Cadastre. 2009. № 2. P. 39–43.
  7. Methods of monitoring the land in crisis. Kharkiv: Publishing house of the Institute of Soil Science and Agrochemistry named Sokolovsky, 1998. 88 p.
  8. Pschevlotsky M., Haskevych V. Soils of the Sokal Ridge and their agrotechnological transformation: monograph. Lviv: Publishing Center of Ivan Franko National University of Lviv, 2002. 180 p.
  9. Teleguz O.V., Kit M.G. Agroecological assessment of soils: monograph. Lviv: Ivan Franko National University of Lviv, 2013. 260 p.
  10. Theories and methods of soil physics / Ed. E. V. Shein and L. O. Karpachevsky. Moscow: Grif and K, 2007. 616 p.
титулка Агро