Changes in the properties and biological activity of crusty solonetzes in the Baraba Lowland under the long-term impact of gypsum

Autor:	N. V. Elizarov, N. V. Semendyaeva, L. N. Korobova
Rok vydání:	2014
Předmět:	Gypsum Soil organic matter Soil Science chemistry.chemical_element Single application Soil science engineering.material Bulk density Nitrogen chemistry Agronomy Solonetz Soil water engineering Earth-Surface Processes
Zdroj:	Eurasian Soil Science. 47:1116-1122
ISSN:	1556-195X 1064-2293
Popis:	A single application of gypsum to crusty hydromorphic low- and high-sodium solonetzes led to the destruction of the columnar structure and the formation of a valuable crumb-granular structure after 25 years. The surface crust disappeared from the reclaimed solonetzes, whereas its thickness in the control soils was about 10 cm. The long-term impact of gypsum also resulted in lower bulk density values in the upper soil meter, especially in the high-sodium solonetz. The number of microorganisms accumulating available nitrogen- and carbon-bearing compounds increased, and the urease and proteolytic activities of the soil became more pronounced. In the upper 20 cm of the reclaimed solonetzes, the microbiological transformation of the plant remains into the soil organic matter became more intensive, thus attesting to the development of the soddy process. The favorable effects of gypsum increased with an increase in the rate of its application.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::294f05a4b0a5ce957a3698745c371fc2 https://doi.org/10.1134/s1064229314110118 Zobrazit plný text záznamu Plný text ve formátu PDF