Available nitrogen in the surface mineral layer of Serbian forest soils

To chci

Based on a greenhouse experiment, nitrogen availability in the surface mineral layer of soil under various deciduous forest stands by analysing the following soil characteristics was evaluated: total organic C, total N, initial content of easily available N inorganic forms, mineralized N content obtained by aerobic and anaerobic incubations and A-value. The experiment was performed on a test plant and through the application of urea enriched with 5.4% 15N. The studied forest soils are characterized by high mineralization intensity and high N availability indices. Aerobic incubation appears to be the most appropriate method for evaluating the available N content. The amounts of min- eralized and nitrified N, obtained by aerobic incubation, with subtraction of the initial content of available mineral N forms are in correlation (P ≤ 0.05) with total organic C content (r = 0.916) and total soil N (r = 0.903) while the correlation with the C/N ratio is poor (r = 0.645). … celý popis

Podrobná bibliografie

Hlavní autor

Željko S. Dželetović

Další autoři

R. N. Pivić
N. L. J. Djurović

Typ dokumentu

Články

Fyzický popis

4 il.

Publikováno v

Journal of Forest Science. -- ISSN 1212-4834. -- Roč. 57, č. 4 (2011), s. 131-140

Témata

FOREST SOILS

TEXTURAL SOIL TYPES

SOIL CHEMICOPHYSICAL PROPERTIES

SOIL FERTILITY

CARBON

NITROGEN

MINERALIZATION

NITRIFICATION

FERTILIZER APPLICATION

UREA

EXPERIMENTATION

GREENHOUSES

lesní půdy

půdní druhy

chemickofyzikální půdní vlastnosti

půdní úrodnost

uhlík

dusík

mineralizace

nitrifikace

hnojení

močovina

pokusnictví

skleníky

Srbsko

C/N > organický C

více… méně…

Popis jednotky

4 tabulky

Bibliografie

Bilbiografie na s. 139-140,