Role of secondary metabolites of wild marigold in suppression of Johnson grass and Sun spurge

Objective: To analyze the wild marigold [(Tagetes minuta L.)(T. minuta)] leaf extract with respect to phytochemicals and allelopathic activity. Methods: The aqueous extracts of T. minuta leaves at concentrations of 50%, 75% and 100% were prepared. Preliminary phytochemical analysis was carried out a...

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Bibliographic Details
Published in:Asian Pacific journal of tropical biomedicine 2015-09, Vol.5 (9), p.708-712
Main Authors: Sadia, Sehrish, Qureshi, Rahmatullah, Khalid, Shahida, Nayyar, Brian Gagosh, Zhang, Jin-tun
Format: Article
Language:English
Subjects:
Allelopathy
grass
Johnson
Johnson grass
marigold
spurge
Sun
Sun spurge
suppression
Weed
Weed suppression
Wild
Wild marigold
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Summary:Objective: To analyze the wild marigold [(Tagetes minuta L.)(T. minuta)] leaf extract with respect to phytochemicals and allelopathic activity. Methods: The aqueous extracts of T. minuta leaves at concentrations of 50%, 75% and 100% were prepared. Preliminary phytochemical analysis was carried out and then allelopathic ef ect of T. minuta on root length, shoot length, germination, fresh and dry weight of Johnson grass and Sun spurge was tested on i lter paper and in soil.Results: Qualitative phytochemical analysis showed the presence of alkaloids, tannins, saponins, l avonoides and terpenoids. The higher concentrations proved to be signii cantly ef ective in reducing almost all the parameters of Sun spurge and Johnson grass in i lter paper bioassay. Supplemented with the soil, all concentrations of leaf extract showed reduction in germination, root and shoot growth, fresh and dry weight of Sun spurge; however, 100% concentration signii cantly reduced the germination of Johnson grass. Conclusions: This study suggests that marigold allelochemicals can be used as an integrated weed management for the production of better crop yield.
ISSN:2221-1691
2588-9222
DOI:10.1016/j.apjtb.2015.06.014