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Reducing greenhouse gas emissions and grain arsenic and lead levels without compromising yield in organically produced rice

Islam, S. F.-U.; Neergaard, A. de; Sander, B. O.; Jensen, L. S.; Wassmann, R.; van Groenigen, J. W.

Flooded rice production is crucial to global food security, but there are associated environmental concerns. In particular, it is a significant source of methane (CH4) and nitrous oxide (N2O) emissions and a large consumer of water resources, while arsenic levels in the grain are a serious health concern. There is also a tendency to use more organic fertilisers to close nutrient cycles, posing a threat of even higher GHG emissions and grain arsenic levels. It has been shown that alternate wetting and drying (AWD) water management reduces both water use and GHG emissions, but success at maintaining yields varies. This study tested the effect of early AWD (e-AWD) versus continuous flooding (CF) water management practices on grain yields, GHG emissions and grain arsenic levels in a split-plot field experiment with organic fertilisers under organic management. The treatments included: i) farmyard manure, ii) compost, and iii) biogas digestate, alone or in combination with mineral fertiliser. The e-AWD water regime showed no difference in yield for the organic treatments. Yields significantly increased by 5–16 % in the combination treatments. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000118173
Veröffentlicht am 22.04.2020
DOI: 10.1016/j.agee.2020.106922
Zitationen: 2
Web of Science
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 06.2020
Sprache Englisch
Identifikator ISSN: 0167-8809, 1873-2305
KITopen-ID: 1000118173
HGF-Programm 12.02.01 (POF III, LK 01) Effects of land use and climate change
Erschienen in Agriculture, ecosystems & environment
Verlag Elsevier
Band 295
Seiten Art.-Nr.: 106922
Schlagwörter Nitrous oxide, Methane, Organic fertilisers, Dissolved organic carbon, Microbial biomass carbon, Redox potential, Root biomass, Global warming potentials, Structural equation modelling, Carbon payment, Heavy metals
Nachgewiesen in Web of Science
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