Journal of Applied Biosciences (J. Appl. Biosci.) [ISSN 1997 - 5902]
Volume 70: 5544 - 5554 Published October 31, 2013.
Characterization of weed flora in rubber trees plantations of Bongo (Côte d’Ivoire)
TUO Korna F. André1, OREGAYouppo Barthélémy2, KOUAME Koffi Badou Jérémie2, ABO Kouabenan2, AGNEROH Thérèse Atcham21 Institut National Polytechnique Félix Houphouët-Boigny, École Supérieure d’Agronomie
2 Institut National Polytechnique Félix Houphouët-Boigny, Département de Formation de Recherche Agriculture et Ressources Animales BP 1313 Yamoussoukro
* Corresponding author. E-mail:je.badou@yahoo.fr Tél: +225 49 99 94 62
Original submitted in on 30th May 2013 Published online at www.m.elewa.org on 31st October 2013.
ABSTRACT
Objectives:
to characterize the weed floristic diversity of the plantation of the
Bongo plantation and to provide a map for the floristic groups for
sustainable weed management,
Methodology and results: a floristic survey of the Para rubber plantations of Bongo (Southeast Côte d’Ivoire) was conducted in 2007 and early 2008. The field tour method was used for weed inventory in 27 plots of 25 ha of different ages. Moreover, the coverage rate of weeds was estimated in samples of 100 square meters each for every plot. Weeds flora is composed of 168 species scattered in the entire rubber trees plantation. These species were distributed in 63 families and 140 genera. The eleven most representative botanical families, constituting more than the half of the flora (50 % of the species), are Rubiaceae, Apocynaceae, Poaceae, Cyperaceae, Euphorbiaceae, Moraceae, Amaranthaceae, Mimosaceae, Fabaceae, Cucurbitaceae and Commelinaceae. Weeds’ mapping was established and illustrated by 4 main weed groups in relation with the stage of rubber trees development. For the plantations of 1 and 2 years old, weeds were dominated by leguminous cover crop Pueraria phaseoloides (Roxb.) Benth. Weed species really begin to establish in the plantation from 8 to 12 years old with appearance of species such as Palisota hirsuta (Thumb.) Engl. and Aneilema beniniense Kunth. Fields of 13 to 23 years old are covered at about 83.5% by Palisota hirsuta (Thumb.) Engl.
Conclusion and application of results: The weed mapping will assist in weed management
Key words: weeds, floristic study, planting year, mapping
Methodology and results: a floristic survey of the Para rubber plantations of Bongo (Southeast Côte d’Ivoire) was conducted in 2007 and early 2008. The field tour method was used for weed inventory in 27 plots of 25 ha of different ages. Moreover, the coverage rate of weeds was estimated in samples of 100 square meters each for every plot. Weeds flora is composed of 168 species scattered in the entire rubber trees plantation. These species were distributed in 63 families and 140 genera. The eleven most representative botanical families, constituting more than the half of the flora (50 % of the species), are Rubiaceae, Apocynaceae, Poaceae, Cyperaceae, Euphorbiaceae, Moraceae, Amaranthaceae, Mimosaceae, Fabaceae, Cucurbitaceae and Commelinaceae. Weeds’ mapping was established and illustrated by 4 main weed groups in relation with the stage of rubber trees development. For the plantations of 1 and 2 years old, weeds were dominated by leguminous cover crop Pueraria phaseoloides (Roxb.) Benth. Weed species really begin to establish in the plantation from 8 to 12 years old with appearance of species such as Palisota hirsuta (Thumb.) Engl. and Aneilema beniniense Kunth. Fields of 13 to 23 years old are covered at about 83.5% by Palisota hirsuta (Thumb.) Engl.
Conclusion and application of results: The weed mapping will assist in weed management
Key words: weeds, floristic study, planting year, mapping
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