In situ ion exchange resin membrane (IEM) technique to measure soil mineral nitrogen dynamics in grazed pastures

Autor:	Andrew Carran, D. R. Scotter, A. G. Gillingham, Saman Bowatte, R. W. Tillman
Rok vydání:	2007
Předmět:	In situ geography geography.geographical_feature_category Chemistry Extraction (chemistry) Soil Science chemistry.chemical_element Soil science Microbiology Pasture Nitrogen Flux (metallurgy) Membrane Soil water Ion-exchange resin Agronomy and Crop Science
Zdroj:	Biology and Fertility of Soils. 44:805-813
ISSN:	1432-0789 0178-2762
DOI:	10.1007/s00374-007-0260-4
Popis:	This paper explored the potential of application of in situ ion exchange resin membrane (IEM) technique for assessing soil nitrogen (N) availability and spatial distribution in New Zealand grazed pastures. Field and incubation experiments conducted to test the technique proved IEM technique to be a useful approach to monitoring the continuous changes in soil mineral N in pasture soils. The field testing showed that the IEM technique reflects both differences in pool size and mineral N flux, while 2-M KCl extraction reflects only pool size at the sampling. Testing the effects of residence time, temperature, soil inorganic N content, and soil water content through diffusion modeling offers further support for using IEM to explore the complex dynamics of nitrogen availability in pasture soils.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::862d31899911524cb5a833fdc24aea9a https://doi.org/10.1007/s00374-007-0260-4 Zobrazit plný text záznamu Full text from SpringerLink