EFFECT OF THE APPLICATION OF SUPERPHOSPHATE ON RARE-EARTHS CONTENT INTHE SOIL

Authors
TODOROVSKY DS MINKOVA NL BAKALOVA DP
Citation
Ds. Todorovsky et al., EFFECT OF THE APPLICATION OF SUPERPHOSPHATE ON RARE-EARTHS CONTENT INTHE SOIL, Science of the total environment, 203(1), 1997, pp. 13-16
Citations number
6
Categorie Soggetti
Environmental Sciences
Journal title
Science of the total environment → ACNP
ISSN journal
00489697
Volume
203
Issue
1
Year of publication
1997
Pages
13 - 16
Database
ISI
SICI code
0048-9697(1997)203:1<13:EOTAOS>2.0.ZU;2-1
Abstract
The total rare earth content in superphosphate produced by the sulphur ic acid treatment of Kola apatites is similar to 2.6 mg/g. The amount of rare earths (in forms usable by plants) transferred into the soil s olution when 300 kg fertilizer/ha per year is applied has been evaluat ed to be 30-170 g/ha per year. A long-term use of such a superphosphat e leads to a statistically significant increase of the content of the rare earths in the cultivated soils. (C) 1997 Elsevier Science B.V.