Efficacy of Spinosad 48SC on the Management of Cotton Bollworms Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) in Zimbabwe

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dc.contributor.authorJimu, F.
dc.contributor.authorMapuranga, R.
dc.contributor.authorMubvekeri, W.
dc.contributor.authorKutywayo, D.
dc.date.accessioned2024-03-07T10:38:50Z
dc.date.available2024-03-07T10:38:50Z
dc.date.issued2023-05-11
dc.description.abstractBollworms management remains one of the major constraints to higher cotton productivity in Zimbabwe. Field trials to investigate the efficacy of Spinosad 48 SC on Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) were carried out for three seasons 2010/11 to 2013/14 at Cotton Research Institute, Kuwirirana, Umguza, and Chizvirizvi in Zimbabwe. A Randomised Complete Block Design with five treatments and four replications was used in this experiment. Three doses of Spinosad 48 SC 40ml/ha, 60ml/ha and 80ml/ha, were evaluated, along with Lambda cyhalothrin 5 EC at 200ml/ha as the standard treatment and the untreated control. Observations on bollworms eggs, larval counts and predator counts. The square root transformation of (x + 3/8) was used for data not following normal distribution. Data were analysed using Genstat 14th Edition. All the three doses of Spinosad 48 SC (40ml/ha, 60ml/ha and 80ml/ha) controlled Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) at CRI, Kuwirirana, Umguza and Chizvirizvi. The highest dose of Spinosad 48 SC of 80ml/ha resulted in the highest yield of seed cotton at CRI and Kuwirirana. All the three doses of Spinosad 48 SC killed predators in the same way as the standard insecticide. Spinosad 48 SC was recommended for registration on control of the two bollworms in Zimbabwe at 80ml/ha dose.en_US
dc.identifier.citationJimu, F., Mapuranga , R., Mubvekeri, W., & Kutywayo, D. (2023). Efficacy of Spinosad 48SC on the Management of Cotton Bollworms Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) in Zimbabwe. Asian Journal of Research in Crop Science, 8(4), 56–63. https://doi.org/10.9734/ajrcs/2023/v8i4188en_US
dc.identifier.issn2581-7167
dc.identifier.urihttps://doi.org/10.9734/ajrcs/2023/v8i4188
dc.identifier.urihttp://ir.gsu.ac.zw:8080/xmlui/handle/123456789/345
dc.language.isoenen_US
dc.publisherAsian Journal of Research in Crop Scienceen_US
dc.relation.ispartofseries2023 - Volume 8;Issue 4
dc.subjectCotton, bollworms, spinosad 48 SC, karate 5 EC, predatorsen_US
dc.titleEfficacy of Spinosad 48SC on the Management of Cotton Bollworms Diparopsis castanea (Hubner) and Herlicoverpa amigera (Hampson) in Zimbabween_US
dc.typeArticleen_US

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