Persistence of GR7 andStrigagermination stimulant(s) fromEuphorbia aegyptiacaBoiss. in soils and in solutions
作者:
A. G. T. BABIKER,
NADIA E. IBRAHIM,
W. G. EDWARDS,
期刊:
Weed Research
(WILEY Available online 1988)
卷期:
Volume 28,
issue 1
页码: 1-6
ISSN:0043-1737
年代: 1988
DOI:10.1111/j.1365-3180.1988.tb00778.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
SummaryThe activity of GR7 andStrigagermination stimulant(s) fromEuphorbia aegyptiacaBoiss. showed adequate persistence (6–8 days) in acidic soils (pH 5·0–6·3), but residual activity was short (1–3 days) in alkaline soils. The compounds tended to lose activity at a faster rate in the alkaline clay Gezira soil (pH 7·8), than in its sandy equivalent (pH 8·1). In solution, pH had no influence on initial activity, but residual action was reduced more rapidly by alkalinity and high temperature. However, the rate of loss of activity in solution was slower than
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