This study was carried out to identify categories of ethnobotanical uses of plant in six localities of Gonate county, Central Western Cote d’Ivoire. An ethnobotanical survey based on semi-structured interviews was performed with 165 interviewees. Forty-four plants species including 42 genera and 27 families were recorded. The most used families were Euphorbiaceae, Verbenaceae and Anacardiaceae while Microphanerophyts (26.86%) were the most represented biological types. Plants are specially collected from fields, along the tracks, Forests, markets, and neighboring villages. Populations mainly used plants in four fields. There were Food (45.56%), the most important, Pharmacopoeia (27.98%), Energy (15.11%) and Handicrafts (11.35%). Overall, Tectona grandis was the most used plant with a citation index (IC) of 58.79%. Twenty-four 24 plants including Dioscorea alata (IC = 46.06%), Manihot esculenta (IC = 42.42%), Mangifera indica (IC = 38.18%) and Ceiba pentandra (IC = 36.97%) were moderately used. Regarding Pharmacopoeia field, the pathologies treated with plants were diarrhea, dysentery, stomach aches, ulcers, and abdominal pains, hemorrhoids, infertility and sexual transmitted diseases. These data could help studies to promote and develop conservation strategies for these useful resources.

Côte d’Ivoire is the first world producer of cocoa beans and represents 42 % of the world offer. A current reduction of the production is due to numerous constraints and particularly, to diseases and vermin of cacao tree. Documentation dedicated to cacao tree’s enemies in the Centre-West region of Côte d’Ivoire is almost non-existent while this region is the second main cacao zone production. Our study aims to contribute to a better knowledge of the impact cacao tree’s enemies. Three sites of plantations were choosed because of their degraded sanitary state and their easy access for a better follow-up. In 25 squares of 4 m aside, after the floristic inventory, the degree of attack was evaluate by direct observation on each tree. 343 trees were observed and 8 enemies were identified. The strongest infestations are Brown rot, other mushrooms and Mosses (77 - 90%), Swollen shoot (> 50%) and Ants (> 50%). The Swollen shoot and the Brown rot which establish the most alarming enemies on the economic aspect are strongly favored by the proximity with other enemies. These results could serve as reference for control diseases in the cacao plantations and sustainable production.