Siam Weed was introduced to Nigeria in 1937, through the importation of timber species from Sri Lanka. It is now a serious weed of both arable and plantation crops in the country. Efforts to control it through manual, mechanical, chemical and biological means have met with little success. At present, the weed seems uncontrollable and suggestion is made that the new research focus should be on its possible industrial and pharmaceutical uses.
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E. O. Lucas (1989) studied this question.
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