Back to Search
Start Over
Effects of Wilting and Dew on the Water Isotope Composition of Detached Grass in Temperate Grassland.
- Source :
-
Journal of agricultural and food chemistry [J Agric Food Chem] 2019 Aug 28; Vol. 67 (34), pp. 9460-9467. Date of Electronic Publication: 2019 Aug 19. - Publication Year :
- 2019
-
Abstract
- Understanding the water isotopes in feed products derived from grass is fundamental for tracing domestic animal products. Grass silage water was reported to have fewer heavy isotopes than fresh grass, but it is still unknown whether dew formation (either dewfall or dewrise), exchange with soil water, or other processes override the expected enrichment of heavy isotopes due to wilting. The isotopic variations of water (δ <superscript>2</superscript> H, δ <superscript>18</superscript> O) in fresh grass and cut grass during wilting on soil and on plastic were compared in this study. Drying enriched heavier isotopes, but this was overridden by three processes that finally caused low δ <superscript>2</superscript> H and δ <superscript>18</superscript> O values: (i) the adsorption of humidity from the surroundings, (ii) the exchange with humidity, and (iii) the depletion of heavy water isotopes close to organic surfaces, called the surface effect, which was the most dominant effect at the end of drying when the water content became low.
Details
- Language :
- English
- ISSN :
- 1520-5118
- Volume :
- 67
- Issue :
- 34
- Database :
- MEDLINE
- Journal :
- Journal of agricultural and food chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 31381328
- Full Text :
- https://doi.org/10.1021/acs.jafc.9b02978