Biology and control of Bathycoelia thalassina (H.S.) (Pentatomidae hemiptera), a pest of cocoa in Ghana
Bathycoelia thalassina is responsible for the immature ripening of cocoa pods in Ghana and accounts for at least 20 percent loss of cocoa production. The biology of this pentatomid was studied in the insectary and in the field on cocoa pods. The mass rearing method is presented. A number of parasites and predators are found and notes on the biology of the more important, Cylindromyia cribrata (Villen) and endo-parasite and Trissolcus spp., egg parasites, are given. The possibility of biological control is discussed. Results, of insecticide experiments on caged insects under field conditions are presented for Agrothion, Bayer 5007, C 17018, C 20132, Dioxacarb, Gammalin/Baygon mixture and Thiodan. Four of these insecticides are currently under large scale trials in the field
Main Authors: | , , , , , , , , |
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Format: | biblioteca |
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St. Augustine (Trinidad y Tobago)
1972
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Subjects: | THEOBROMA CACAO, INSECTOS DEPREDADORES DE LOS FRUTOS, CONTROL QUIMICO, INSECTICIDAS, CONTROL BIOLOGICO, ENEMIGOS NATURALES, CICLO VITAL, BATHYCOELIA THALASSINA, PARASITOS, DEPREDADORES, GHANA, |
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Summary: | Bathycoelia thalassina is responsible for the immature ripening of cocoa pods in Ghana and accounts for at least 20 percent loss of cocoa production. The biology of this pentatomid was studied in the insectary and in the field on cocoa pods. The mass rearing method is presented. A number of parasites and predators are found and notes on the biology of the more important, Cylindromyia cribrata (Villen) and endo-parasite and Trissolcus spp., egg parasites, are given. The possibility of biological control is discussed. Results, of insecticide experiments on caged insects under field conditions are presented for Agrothion, Bayer 5007, C 17018, C 20132, Dioxacarb, Gammalin/Baygon mixture and Thiodan. Four of these insecticides are currently under large scale trials in the field |
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