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1 October 2003 Estimation of Production Losses Caused by the Coffee Berry Borer (Coleoptera: Scolytidae) and Calculation of an Economic Damage Threshold in Togolese Coffee Plots
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Abstract

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.

Komlan Wegbe, Christian Cilas, Bernard Decazy, Claude Alauzet, and Bernard Dufour "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, (1 October 2003). https://doi.org/10.1603/0022-0493-96.5.1473
Received: 16 October 2002; Accepted: 1 February 2003; Published: 1 October 2003
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