Bandhu Raj Baral

Fate Of Particulate And Dissolved Organic Matter

In soil Nitrogen Mineralization

• Broschiertes Buch

Produktbeschreibung

The transformation of insoluble organic N via particulate and dissolved organic matter (POM and DOM) into inorganic N may represent the bottle neck mechanism in N mineralization. However, it is unknown how POM fractions are related to DOM pools, and how these particulate and dissolved pools are quantitatively involved in N mineralization. To understand and quantify the fate of these pools in N mineralization, we conducted an incubation experiment with 15N labeled radish residues to trace the flow of 15N through the different N pools. POM was fractionated with density fractionation as light and heavy fraction (LF and HF). Our analysis showed that neither DON nor POM function as a distinct N source fraction in soil. The collected DOM was predominantly recalcitrant (~80%), suggesting that the bioavailable DOM fraction cannot be measured with current sampling techniques.

Produktdetails

• Verlag: LAP Lambert Academic Publishing
• Aufl.
• Seitenzahl: 72
• Erscheinungstermin: 7. April 2012
• Englisch
• Abmessung: 220mm x 150mm x 5mm
• Gewicht: 125g
• ISBN-13: 9783847349341
• ISBN-10: 3847349341
• Artikelnr.: 35507119

Autorenporträt

The author is research officer of Nepal Agricultural Research Council (NARC). He has been involved in research related to nutrient and soil management since 2004. He has completed Master degree in soil science from Wageningen University, the Netherlands. He has published many research articles on national and international journals.