Correlation of Oil Palm (Elaeis Guineensis Jacq.) Age, Leaflet Parameters, and Incidence of Its Major Pest Coelaenomenodera Minuta Uhmann

Nlend Alain Nicaise¹, Kosma Philippe¹, Tabe Taku Robert², Tamfuh Eric² and Ntsomboh Ntsefong Godswill^3,

¹Departement of agriculrure, livestock and by products, Higher institute of the sahel, University of Maroua, P. O. Box 46 Maroua, Cameroon

²Phytosanitary Unit, Departement of Agriculture, SOCAPALM Mbongo, Cameroon

³Institute of Agrigultural Research for Development (IRAD), Phytopathology Unit, Specialized Centre for Oil Palm Research (CEREPAH) of La Dibamba. B.P. 243 Douala, Cameroon

Cite this paper:
Nlend Alain Nicaise, Kosma Philippe, Tabe Taku Robert, Tamfuh Eric and Ntsomboh Ntsefong Godswill. Correlation of Oil Palm (Elaeis Guineensis Jacq.) Age, Leaflet Parameters, and Incidence of Its Major Pest Coelaenomenodera Minuta Uhmann. Research in Plant Sciences. 2015; 3(1):4-11. doi: 10.12691/plant-3-1-2

Abstract

The oil palm (Elaeis guineensis Jacq.) is an oleaginous plant cultivated in the humid inter tropical zone. Its economic importance is significant as it represents the world's leading source of fats of vegetable origin. Its yield is higher per hectare than any other oilseed in the world, but this yield may be limited by Coelaenomenodera minuta Uhmann, one of the most damaging pests of oil palm. Because of the damage of this pest, palms can lose up to 50% of their production within two successive years. This study aims at putting in place a method of control of C. minuta. For this reason, 14 samples and three repetitions were defined; 11 doses of insecticides and 3 replications were tested. After statistical analysis, the results showed that 25% of the trees had at least 2 adults, 50% had at least 4 adults, 75% of the trees had 9 larvae, 4 nymphs and 7 adults. These results are sufficient to trigger an intervention to reduce the population. The threshold is the same as in older tress, were we had 8 larvae, 4 nymphs and 2 adults. Also, it was found that treatment with evisect's at a dose of 300 g / ha is the best treatment that can significantly reduce the population of larvae, nymphs and adults of C. minuta in three weeks. It is recommended that more research work on the seasonality of C. minuta be undertaken. This can help identify the period of the year, the moment when the larvae, the nymphs and the adults of C. minuta are abundant, allowing proper orientation in decision making. This study can improve on integrated pest management strategies against this major oil palm pest.

Keywords:
Coelaenomenodera minuta Uhmann Elaeis guineensis Jacq. leaflet parameters oil palm integrated pest management

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