https://orcid.org/0000-0001-5128-3299
Figures & data
Figure 1. Map of Ghana showing the study area (Bawku Municipality, Bawku West and Binduri District).
Table 1. Distribution of the communities selected and number of farmers interviewed.
Table 2. Disease severity measurement using a 5-point score.
Table 3. Background information of respondents.
Table 4. Farmers’ knowledge and perceptions about onion basal rot.
Table 5. Onion farmers’ agronomic practices.
Plate 1. Onion bulbs showing various symptoms of basal rot diseases
Plate 2. (a) Onion plant with rotten neck and bulb that turned brown and water-soaked. (b) Bulb showing basal rot with white fungal mycelial growth.
Plate 3. (a) 9-day culture of Fusarium oxysporum on PDA. (b) Microscopy of Fusarium oxysporum f. sp. cepae showing branched, hyaline and septate mycelium, macroconidia (red arrow) and microconidia (black arrow).
Plate 4. Pathogenicity test showing diseased onion (A = full; B = cut) bulbs after inoculating with Fusarium oxysporum.
Plate 5. Pathogenicity test showing healthy onion bulbs after inoculating with sterile PDA.
Table 6. Incidence and severity of onion basal rot disease in the Upper East Region of Ghana.
Table 7. Incidence and severity of onion basal rot disease among the three districts/municipality.
Table 8. Mean disease incidence for dry season and rainy season.
Table 9. Mean disease severity for dry season and rainy season.
Data availability statement
All data are available within the manuscript and there is no additional data to be reported.