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.
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Claims 8
Claim · model-written summary
Coffee weight losses were proportional to borer attack rates.
CoffeaNot reportedInteractor
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“weight losses were proportional to the attack rates”
t0“Coffee Berry Borer”
Claim · model-written summary
Average coffee infestation was 5.64% in year one.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average infestation rates were 5.64% in the first year and 6.36% in the second year”
t0“Coffee Berry Borer”
Claim · model-written summary
Average coffee infestation was 6.36% in year two.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The average infestation rates were 5.64% in the first year and 6.36% in the second year”
t0“Coffee Berry Borer”
Claim · model-written summary
Coffee production losses were 2.60% in year one.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total production losses amounted to 2.60% and 3.18%, respectively, for the same periods”
t0“Coffee Berry Borer”
Claim · model-written summary
Coffee production losses were 3.18% in year two.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total production losses amounted to 2.60% and 3.18%, respectively, for the same periods”
t0“Coffee Berry Borer”
Claim · model-written summary
Plot attack rates were generally low and varied within zones.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“attack rates in the plots were low and varied considerably within a given zone”
t0“Coffee Berry Borer”
Claim · model-written summary
Plateau coffee plantations were attacked more severely than plains plantations.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plantations located on plateau were more severely attacked than those in the plains”
t0“Coffee Berry Borer”
Claim · model-written summary
The loss-cost relationship supported calculation of an economic damage threshold for cost-effective control.
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“Coffee Berry Borer”