Economic importance of White Top (Parthenium hysterophorous L. [f]) under intense vegetable production in Trinidad

Puran Bridgemohan and Richard A.I. Brathwaite

No 260415, 23rd Annual Meeting, August 23-28, 1987, St. John's, Antigua from Caribbean Food Crops Society

Abstract: A weed survey conducted to determine the incidence of Parthenium hysterophorous l. (f) in vegetable crops during the wet and dry seasons in Trinidad indicated that the plant is a predominant noxious weed. It has shown the ability to survive bipyridylium herbicide treatments, and biological and cultural control was insignificant in reducing the population of the weed. The weed reduced crop yield in tomato (lycopersicon esculentum Mill.) cv, Calypso by 10~ and crop quality in Cauliflower (Brassica aleracea var. botrytis l.j by 75-100% due to its competitive ability and allelopathic potential. The plant served as a suitable 'resting site' for the adult insect pest Plutella xylostella (l.) (Lepidoptera: Yponomenitidae) which attacks cruciferous crops.

Keywords: Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies (search for similar items in EconPapers)
Pages: 9
Date: 1987-08-23
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Persistent link: https://EconPapers.repec.org/RePEc:ags:cfcs87:260415

DOI: 10.22004/ag.econ.260415

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