期刊
JOURNAL OF AGRONOMY AND CROP SCIENCE
卷 192, 期 6, 页码 427-433出版社
WILEY
DOI: 10.1111/j.1439-037X.2006.00232.x
关键词
allelochemicals; allelopathy; paddy weeds; rice; Stylosanthes guianensis
类别
Stylosanthes guianensis is a popular pasture legume and cover crop. The legume possessed strong allelopathic potential and suppressed spontaneous growth of paddy weeds. In a bioassay, aqueous extract of S. guianensis remarkably inhibited germination and growth of barnyardgrass and monochoria. Application of 1 ton ha(-1) upland parts of S. guianensis significantly reduced paddy weed biomass by 80% and increased rice yield by 40% when compared with the control. Gas chromatography-mass spectrometry analysis reveals the presence of several allelochemicals in S. guianensis including phenolic acids, coumarin and long-chain fatty acids. Stylosanthes guianensis may be used as a source of natural herbicide for reducing the dependency on synthetic herbicides in agricultural production.
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