Raymonda Johnson

ORCID: 0000-0002-5666-8398
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About
Contact & Profiles
Research Areas
  • Insect Resistance and Genetics
  • Insect Pest Control Strategies
  • Animal Disease Management and Epidemiology
  • Listeria monocytogenes in Food Safety
  • Pesticide Residue Analysis and Safety
  • Food Safety and Hygiene
  • Agricultural pest management studies
  • Zoonotic diseases and public health
  • Insect and Pesticide Research
  • Salmonella and Campylobacter epidemiology
  • Livestock and Poultry Management
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Insect Utilization and Effects

Njala University
2022-2025

Sierra Leone Agricultural Research Institute
2022

Ministry of Agriculture and Forestry
2022

The fall armyworm (<i>Spodoptera frugiperda</i>), a devastating pest of maize (<i>Zea mays</i>), poses significant threat to production and food security in Sierra Leone due its high reproduction rate voracious feeding habits. This study evaluates the efficacy insecticidal nets controlling populations minimizing damage crops. A field experiment evaluated treated net (FAW) <i>Spodoptera frugiperda</i>...

10.11648/j.aje.20250901.15 article EN American Journal of Entomology 2025-02-24

The transfer of antibiotic resistance from animals to humans is concern in recent times. One potential source such the untreated poultry excreta used as manure farming. We aim identify bacterial isolates and susceptibility patterns Escherichia coli Sierra Leone. This was a cross-sectional study fresh samples collected four commercial sites Freetown, Leone, June–September 2021. Bacterial were tested against eight antibiotics using established standards. Of 100 samples, 93 showed (93%): those,...

10.3390/ijerph19095405 article EN International Journal of Environmental Research and Public Health 2022-04-29

There are no previous studies reporting the type and quantity of pesticides for farming from Sierra Leone impact Ebola or COVID-19 on importation. This study reviewed imported by Leone, Ministry Agriculture Forestry (MAF), between 2010-2021. It was a descriptive using routinely collected importation data. We found MAF only during 2010, 2014 2021, in response to growing food insecurity associated with outbreaks. Results showed insecticide increased 6230 L 2010 51,150 antimicrobial (including...

10.3390/ijerph19084792 article EN International Journal of Environmental Research and Public Health 2022-04-15

The use of artificial diets to mass reared insect stock under laboratory conditions, promotes knowledge about the biology, behavior, and nutritional requirements insects; with such information being fundamental for formulation efficient integrated pest management programs (IPM) strategies. However, used rearing Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in this study, do not contain wheat germ, routine rearing. aim study was compare food preference consumption by S. larvae,...

10.4236/ae.2023.112007 article EN Advances in Entomology 2023-01-01

In Sierra Leone, in 2020, a study by the Livestock and Veterinary Services Division (Ministry of Agriculture Forestry) on surveillance system animal diseases antimicrobial use found poor reporting. Of expected weekly districts reports, <1% were received only three 15 had submitted reports occasionally between 2016 2019. Following this, staff-capacity-building reporting was undertaken. 2021, we reassessed improvement used to describe livestock antimicrobials utilized their treatment....

10.3390/ijerph19095294 article EN International Journal of Environmental Research and Public Health 2022-04-27
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