Floristic Inventory and Evaluation of the Effectiveness of Three Herbicides in South Gabon Olive Farms

This study was carried out on the site of oil palm agro-industrial exploitation in South-East Gabon. The aim was to evaluate effectiveness of three herbicides: Roundup (glyphosate), Finish (c) and Ally (metsulfuron methyl) on the weed flora. An inventory weed flora was conducted to estimate abundance-dominance, post-treatment patch coverage, weed recurrence time, and the optimal herbicide application rate. The results obtained show that the weed flora is composed of 22 dominant species, divided into 20 genera and 15 families. The three predominance families are Rubiaceae, Poaceae and Cyperaceae. A mixture of two herbicides, specifically Finish Ally (glyphosate-metsulfuron methyl and metsulfuron methyl), is the most effective, with 85% of weeds eliminated by day 30 and 74 days of recurrence. Citation: Samson Daudet Medza-Mve, Université des Sciences et Techniques de Masuku, USTM-INSAB Gabon; Ayoni Ogunbayo ,Country Project Manager Regional Hub, West and Central Africa, BP 320, Bamako-Mali ; Julie Dumortier ,Université des Sciences et Techniques de Masuku, USTM-INSAB Gabon; Maurice Ognalaga ,Université des Sciences et Techniques de Masuku, USTM-INSAB Gabon; André Toussaint ,Université de Liège, Gembloux Agro-Bio Tech, 2 Passage des Déportés, 5030 Gembloux-Belgique . "Floristic Inventory and Evaluation of the Effectiveness of Three Herbicides in South Gabon Olive Farms." Global Research and Development Journal For Engineering 32 2018: 1 - 6.