Indian Society of Weed Science (ISWS), India

This article Citation:

K.K. Shakkira, P.V. Sindhu and Meera V. Menon. 2022. Screening of Indian borage[Plectranthus amboinicus (Lour) Spreng], bitter weed [Andrographis paniculata (Burm.f.) Nees] and Southern cone marigold (Tagetes minuta L.) for allelopathic potential against weeds . Indian Journal of Weed Science : 54( 2) 211- 215.

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Volume	Issue	Publication year	Page No	Type of article
54	2	2022	211-215	Research note

Screening of Indian borage[Plectranthus amboinicus (Lour) Spreng], bitter weed [Andrographis paniculata (Burm.f.) Nees] and Southern cone marigold (Tagetes minuta L.) for allelopathic potential against weeds

K.K. Shakkira, P.V. Sindhu and Meera V. Menon

DOI: http://dx.doi.org/10.5958/0974-8164.2022.00040.5

Email: pv.sindhu@kau.in

Address: Department of Agronomy, College of Agriculture, Kerala Agricultural University, Thrissur, Kerala 680656, India

Keywords:

Allelopathy, Andrographis paniculata, Plectranthus amboinicus, Tagetes minuta, Weed management

Abstract:

Several plants express the allelopathic phenomenon through release of allelochemicals. Plants rich in allelochemicals can be used for controlling weeds in organic crop production. Current study was aimed at screening of Andrographis paniculata (Burm.f.) Nees (bitter weed), Plectranthus amboinicus (Lour) Spreng (Indian borage) and Tagetes minuta L.(Southern cone marigold) for allelopathic potential against upland weeds.This study was conducted from February to May 2021 in the Department of Agronomy, College of Agriculture, Vellanikkara, Kerala Agricultural University, Thrissur. The methanol extracts of Tagetes minuta and Andrographis paniculate at 25-30% concentration as pre-emergence application exhibited allelopathic effect on broad-leavedweeds.