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

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.


Issue Date:
Aug 23 1987
Publication Type:
Conference Paper/ Presentation
Language:
English
Total Pages:
9




 Record created 2017-07-21, last modified 2017-08-29

Fulltext:
Download fulltext
PDF

Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)