Course of Uptake of Weed-Borne Nitrogen by Maize,Tested with 15N |
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Authors: | I Merbach |
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Institution: | Sektion Bodenforschung, UFZ-Umweltforschungszentrum Leipzig-Halle GmbH , Bad Lauchst?dt, Deutschland |
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Abstract: | Abstract The course of uptake of weed-borne nitrogen by maize was tested with 15N in a pot experiment with silty loam after common growth of maize and Chenopodium album L., and mulching the weed in the 5-leaf stage of maize. Harvests 4,8 and 12 weeks after mulching show that the maize took up 35, 63 and 70% of the weed-borne nitrogen, resp., in consequence of a rapid and almost complete mineralization. The portion of weed-borne nitrogen in total N of the maize was 16% at all harvest dates. The differences in yield between weeded and unweeded maize were not significant neither at 5-leaf stage nor at corn maturity. |
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Keywords: | Maize nitrogen conservation nitrogen release N uptake nitrogen 15 pot experiment weeds yield |
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