Course of Uptake of Weed-Borne Nitrogen by Maize, Tested with15N
作者:
I. Merbach,
期刊:
Isotopes in Environmental and Health Studies
(Taylor Available online 1996)
卷期:
Volume 32,
issue 2-3
页码: 167-172
ISSN:1025-6016
年代: 1996
DOI:10.1080/10256019608036308
出版商: Taylor & Francis Group
关键词: Maize;nitrogen conservation;nitrogen release;N uptake;nitrogen 15;pot experiment;weeds;yield
数据来源: Taylor
摘要:
The course of uptake of weed-borne nitrogen by maize was tested with15N in a pot experiment with silty loam after common growth of maize andChenopodium albumL., 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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