Exploring Alternative Use of Medicinal Plants for Sustainable Weed Management

Kwame Sarpong Appiah, Hossein Korrani Mardani, Asma Osivand, Sylvia Kpabitey, Christiana Adukwei Amoatey, Yosei Oikawa and Yoshiharu Fujii
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Kwame Sarpong Appiah: Department of Biological Production Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Hossein Korrani Mardani: Department of Biological Production Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Asma Osivand: Department of Biological Production Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Sylvia Kpabitey: Department of Agricultural Economics and Agribusiness, University of Ghana, P.O. Box LG 64, Legon, Accra, Ghana
Christiana Adukwei Amoatey: Department of Crop Science, University of Ghana, P.O. Box LG 44, Legon, Accra, Ghana
Yosei Oikawa: Department of International and Environmental Agriculture Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Yoshiharu Fujii: Department of International and Environmental Agriculture Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan

Sustainability, 2017, vol. 9, issue 8, 1-23

Abstract: This paper presents the first application of ethnobotanical studies to screen for allelopathic species among medicinal plants for sustainable weed management. This study assesses the possible relationship between ethnobotanical indices and allelopathy of medicinal plants. Ethnobotanical data were collected in 2016 by using semi-structured interviews with 140 informants in the Ejisu-Juaben Municipality, Ghana. Data were analysed using statistical tool and ethnobotanical indices including use value (UV), Fidelity Level (FL), Relative Frequency of Citation (RFC). The Sandwich and Dish pack methods were respectively used to evaluate allelopathy through leachates and volatiles of collected samples. Ninety-five species belonging to 43 families are reported in this study, with leaves (52%) cited the most utilised plant part. Cleistopholis patens (UV = 0.54; FL = 90.7%; RFC = 0.37) and Ocimum gratissimum (UV = 0.37; FL = 38.4%; RFC = 0.35) were among the most cited species. Thirty-two species showed inhibition (≥49.3%) by leachates, while twenty-four species were found with potential volatile inhibitory compounds against lettuce radicle growth. There was a significant positive correlation (Pearson) between the UV and RFC of medicinal plants and allelopathy by leaf leachates ( r = 0.639 **; p = 0.01 and r = 0.653 **; p = 0.01 respectively). This systematic documentation of medicinal plants in Ejisu-Juaben Municipality shows medicinal plants with ethnomedicinal values and potential allelopathy that can be utilised in sustainable weed control.

Keywords: medicinal plants; use value (UV); Fidelity Level (FL); Relative Frequency of Citation (RFC); ethnomedicine; allelopathy; sustainable weed control; Ejisu-Juaben Municipality (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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