Sampling procedures and action threshold level of vectors of viruses that cause maize lethal necrosis disease in Kenya

Maize lethal necrosis disease (MLND) has emerged as a major threat to maize production in East Africa. The disease is caused by a co-infection of maize by maize chlorotic mottle virus (MCMV) and sugarcane mosaic virus (SCMV) which are respectively vectored by corn thrips, Frakliniella williamsi Hood...

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Bibliographic Details
Published in:International journal of tropical insect science 2020-12, Vol.40 (4), p.919-931
Main Authors: Namikoye, E. S., Kinyua, Z. M., Kasina, M.
Format: Article
Language:English
Subjects:
Aphidoidea
Biomedical and Life Sciences
Cereal crops
Corn
Crop production
Entomology
Foliage
Imidacloprid
Infestation
Insecticides
Insects
Leaves
Life Sciences
Necrosis
Original Research Article
Plant virus diseases
Sampling
Sugarcane
Vegetables
Viruses
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Summary:Maize lethal necrosis disease (MLND) has emerged as a major threat to maize production in East Africa. The disease is caused by a co-infection of maize by maize chlorotic mottle virus (MCMV) and sugarcane mosaic virus (SCMV) which are respectively vectored by corn thrips, Frakliniella williamsi Hood and corn leaf aphids, Rhopalosiphum maidis Fitch. Developing a reliable and practical sampling plan and action threshold for population monitoring of the two vectors is key for implementing a reliable integrated vector management strategy. A study was carried out to determine the sampling regime and action threshold levels for the vectors. Three maize stratas (upper, mid and lower foliage levels), three sampling intervals and five spray regimes using Thunder OD 145 (110 g/L Imidacloprid and 100 g/ L Betacyfluthrin 45 g/L) (were tested. The upper plant strata proved a preferred target for corn thrips ( P  
ISSN:1742-7592
1742-7584
1742-7592
DOI:10.1007/s42690-020-00150-7