Journal of Animal and Plant Sciences
J. Anim. Plant Sci. [ISSN 2071 - 7024]
Volume 6 (1): 559 - 566. Published February 25, 2010.
Effectiveness of glyphosate herbicide in a juvenile oil palm plantation in Côte d'Ivoire
Karidia TRAORE, Dodiomon SORO, Brahima CAMARA, Fatogoma SORHO
*1UFR Sciences de la Nature, Université d’Abobo-Adjamé, 22 BP 67 Abidjan 22 ; 2UFR Biosciences, Laboratoire de Botanique & 3Laboratoire de Physiologie Végétale Université d’Abidjan-Cocody, 22 BP 582 Abidjan 22.
*Corresponding author E-mail : kadytrao@yahoo.frSUMMARY
To diversify herbicides used in oil palm tree farms, an experiment was conducted in CNRA (Centre National de Recherché Agronomique) in La Me research station located in the southern rain forest of Cote d’Ivoire. It was to assess the effectiveness of three application rates (2, 3 and 4 l/ha) of Roundphos compared to the usual optimal rate (3 l/ha) of Roundup and Callaxone Super. The results show that 3 l/ha of Roundphos and the widely used herbicide (Roundup) applied at the same rate have similar effectiveness. Except for the first date of observations, i.e. 15 days after treatment (DAT), the effectiveness of Calloxone Super remained under the 80 % threshold limit with a lower residual effect. The higher rate of Roundphos (4 l/ha) was significantly more effective than the best control herbicide only at 45 DAT. Therefore, 3 l/ha of Roundphos is optimal with an effectiveness above the threshold limit up to 60 DAT. No symptom of phytotoxicity was observed on young trees during this assay.
Key words: Effectiveness, glyphosate, herbicide, oil palm tree, paraquat
FULL PAPER [PDF AVAILABLE HERE]
