The structural features and biological activity of humic acids from coals

Authors
Novikova, LN Chechenina, TE Yakovleva, YN Ostrovskaya, RM Kushnarev, DF Seryshev, VA
Citation
Ln. Novikova et al., The structural features and biological activity of humic acids from coals, EURAS SOIL, 34(3), 2001, pp. 298-302
Citations number
13
Categorie Soggetti
Agriculture/Agronomy
Journal title
EURASIAN SOIL SCIENCE
ISSN journal
10642293 → ACNP
Volume
34
Issue
3
Year of publication
2001
Pages
298 - 302
Database
ISI
SICI code
1064-2293(200103)34:3<298:TSFABA>2.0.ZU;2-1
Abstract
The cytogenetic activity of humic acids extracted from brown coals and thei r effect on both the germination of corn seeds and the yield of barley and wheat were studied. They induce no chromosomal aberrations in plants when a pplied at concentrations of 4.03 to 160 mg/l. The biological activity of hu mic acids depends on the treatment of coal, the relative content of constit uents with a molecular weight over 10000, the content of carboxyl and pheno lic OH groups, and macromolecule charges.