Publications by authors named "Ken O Fening"

Thaumatotibia leucotreta Meyrick (Lepidoptera: Tortricidae) is a major threat to the production and marketing of pepper (Capsicum spp.) in Ghana. To reduce the damage of the pest on pepper farming, it is important to find appropriate control methods, which may include the use of resistant host plants.

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Fall armyworm (FAW), is a generalist pest known to feed on more than 300 plant species, including major staple crops such as rice, maize and sorghum. Biological control of FAW using a combination of a major indigenous egg parasitoid and entomopathogenic fungi was explored in this study. strains (ICIPE 7, ICIPE 41, and ICIPE 78) and ICIPE 621 which demonstrated effectiveness to combat the pest, were evaluated through direct and indirect fungal infection to assess their pathogenicity and virulence against adults, eggs and their effects on parasitism rates.

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It is essential to correctly identify and keep track of the abundance of thrips species on infested host crops to understand their population dynamics and implement control measures promptly. The current study was conducted to evaluate the performance of sticky traps in monitoring thrips species in exporters' eggplant and chili farms and to assess the impact of weather factors on thrips population dynamics. Thrips species were monitored using blue, yellow, and white sticky traps on chili and eggplant farms in Tuba, respectively, in 2020 and 2021.

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The eggplant fruit and shoot borer (EFSB) is a devastating pest of eggplants ( L. and L.) in Ghana, causing significant economic losses.

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Article Synopsis
  • Aphids pose significant threats to cruciferous crops in tropical regions, making it essential to understand their population dynamics for effective pest management.
  • The study monitored aphids and their natural enemies on cabbage plants in Ghana over five cropping seasons, revealing that population densities peak during specific times, particularly in dry conditions.
  • Factors such as plant age, air temperature, and humidity were key in influencing aphid populations, with different relationships observed between aphids and their natural enemies in the Coastal Savannah and Deciduous Forest zones, indicating the need for tailored management strategies.
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Laboratory research in Ghana demonstrated the effectiveness of an isolate of Beauveria bassiana (IMI 389521) from the United Kingdom against the larger grain borer Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), a major pest of stored maize. The minimum effective concentration, following artificial infestation trials on maize, was between 10 and 10 cfu/kg maize. Before moving out to village-level control, a major requirement was to determine if the product could effect control in artificially infested maize held under real environmental conditions in several locations in Ghana.

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Since 2016, the invasive insect Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) from the Americas has made maize production unattainable without pesticides in parts of Sub-Saharan Africa and Asia.

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The infestation of the fall armyworm (FAW), (J.E. Smith) (Lepidoptera: Noctuidae) in Africa since 2016 has been a major threat to maize production.

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In response to the threat caused by the fall armyworm to African maize farmers, we conducted a series of field release studies with the egg parasitoid in Ghana. Three releases of ≈15,000 individuals each were conducted in maize plots of 0.5 ha each in the major and minor rainy seasons of 2020, and compared to no-release control plots as well as to farmer-managed plots with chemical pest control.

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The economic impact of the invasion of Spodoptera frugiperda (J.E. Smith, Lepidoptera: Noctuidae) into Africa has so far been limited to maize agriculture but could potentially impact many other crops.

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The fall armyworm Spodoptera frugiperda (J. E. Smith) invaded several West African countries in 2016 causing severe injury to maize plants and economic damage.

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