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1 4 C-isoproturon residues were incorporated in wheat plants by growing seedlings for 18 days in quartz sand with nutrient solution which was treated with ring-labeled 14 C-isoproturon, resulting in 14 C-concentration equivalent to 15.4 nmol isoproturon per g dry shoot mass. The residues were characterized by extraction and HPLC-analysis, and were shown to consist...
The large temporal variation in nitrous oxide (N 2 O), methane (CH 4 ) and carbon dioxide (CO 2 ) flux rates is a major source of error when estimating cumulative fluxes of these radiative active trace gases. We developed an automated system for near-continuous, long-term measurements of N 2 O, CH 4 and CO 2 fluxes from cropland soils and used it to...
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