Authors:
Ahou Cyprienne KOUASSI, Akpa Alexandre Moïse AKPESSE, N’Klo HALA, Assiénin Hauverset N’GUESSAN, Kouakou Hervé KOUA and Kouassi Philippe KOUASSI ,Côte D’Ivoire |
Abstract:
The oil palm tree, the first source of fatty substances of plant origin in the world, is subject to
attacks from many pests. Among these, Coelaenomenodera lameensis (Coleoptera,
Chrysomelidae: Hispinae) is the most serious pest of oil palm in West Africa and mainly in Côte
d’Ivoire. This insect causes significant damage which greatly compromises the crops. Indeed, the
fight against this pest requires knowledge of the infested areas. This study, which was conducted
from September 2015 to December 2017, therefore aimed to establish spatial distribution of this
pest in the main oil palm production areas. Thus, attack levels of C. lameensis were evaluated by
counting insects every 2 months in the palm groves of 9 localities producing oil palm. The
results found significant differences between localities with regard to the average index of larvae
and adults. These indexes were particularly higher in the South-Central zone, the locality of Divo
being the most affected with an average index of 5.22 larvae/palm and 7.32 adults/palm.
Phytosanitary surveillance of palm groves in the localities surveyed, especially those of Divo,
should therefore be reinforced. This requires a perfect knowledge of the biology and also
evaluation of the impact of this pest on the production. |
