Estimation of production losses caused by the coffee berry borer (Coleoptera: Scolytidae) and calculation of an economic damage threshold in Togolese coffee plots

Wegbe Komlan, Cilas Christian, Decazy Bernard, Alauzet Claude, Dufour Bernard Pierre. 2003. Estimation of production losses caused by the coffee berry borer (Coleoptera: Scolytidae) and calculation of an economic damage threshold in Togolese coffee plots. Journal of Economic Entomology, 96 (5) : 1473-1478.

Autre titre : Estimation des pertes de production causées par le scolyte des baies du caféier (Coleoptera : Scolytidae) et calcul d'un seuil économique de dégât dans des parcelles de caféiers au Togo

Résumé : The coffee berry borer, #Hypothenemus hampei# (Ferrari) (Coleoptera: Scolytidae), which exists in all coffee producing zones, is a major pest. The seriousness of this scolytid was assessed in Togolese plots spread over five agroclimatic zones, by determining the attack rate from a sample of coffee trees. The work was carried out over 2 yr and revealed that weight losses were proportional to the attack rates. The average infestation rates were 5.64% in the first year and 6.36% in the second year, while total production losses amounted to 2.60% and 3.18%, respectively, for the same periods. Generally speaking, attack rates in the plots were low and varied considerably within a given zone. Plantations located on plateau were more severely attacked than those in the plains. A relationship was established between total losses and the cost of insecticide treatment; this relationship was used to calculate an economic damage threshold beyond which control proves to be cost effective.

Mots-clés Agrovoc : Coffea canephora, Hypothenemus hampei, dégât, niveau de préjudice économique, seuil économique, plateau, plaine, lutte anti-insecte, analyse coût avantage, perte de récolte

Mots-clés géographiques Agrovoc : Togo

Classification Agris : H10 - Ravageurs des plantes
U10 - Informatique, mathématiques et statistiques
F01 - Culture des plantes

Auteurs et affiliations

• Wegbe Komlan, CRA-F (TGO)
• Cilas Christian, CIRAD-CP-CACAO (FRA)
• Decazy Bernard, CIRAD-CP-CACAO (FRA)
• Alauzet Claude, Université Toulouse III Paul Sabatier (FRA)
• Dufour Bernard Pierre, CIRAD-CP-CAFE (SLV)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/517496/)

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