Asian Journal of Research in Crop Science

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, Volume 8, Issue 4, Page 56-63
DOI: 10.9734/ajrcs/2023/v8i4188

Abstract


Bollworms 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.

Keywords:
  • Cotton
  • bollworms
  • spinosad 48 SC
  • karate 5 EC
  • predators

How to Cite

Jimu, 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/v8i4188

References

Renneberg R, Berkling V, Loroch V. Cotton insect pest problems, biotechnology for beginners (second edition). Imprint Academic Press, ISBN 978-0-12-801224-6; 2017.

Ismail SM. Influence of some insecticide sequences on the injurious insect- pests of cotton plants. Bull Natl Res Cent. 2019; 43:149. Available:https://doi.org/10.1186/s42269-019-0190-y

Seraina V, Monika MM, Thomas B, Yogendra S, Shreekant SP, Amritbir R. Extent of Bollworm and sucking pest damage on modern and traditional cotton species and potential for breeding in organic cotton. Sustainability. 2019; 11(6353):2 of 12.

Available:https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/bollworm

Jowah P. Studies on timing of insecticide applications on small scale cotton farms. A thesis submitted in partial fulfilment of the degree of Doctor of Philosophy. Department of crop science, Faculty of Agriculture, University of Zimbabwe; 1994.

Meyer JR. Insects as pests: The economics of pest control. Department of Entomology, NC State University; 2004.

Kranthi KR, Russsell DA. Changing trends in cotton pest management. Crop Protection Division, Central Institute for Cotton Research, PB. No. 2 Shankarnagar, PO, Nagpur-440010-India; 2009.

Yano BL, Bond IDM, Novilla MN, Mcfadden LG, Reasort MJ. Spinosad insecticide: Subchronic and chronic toxicity and lack of carcinogenicity in fischer 344 rats. Oxford Journals, Medicine and Health Sciences and Mathematics Toxicological Sciences. 2001;65(2):288-298.

Spinosad Technical Bulletin www.2ndchance.info/fleas-spinosadgarden.pdf

Cotton Growers Association (CGA). Cotton Handbook, Zimbabwe, Revised edition. European Union, Harare, Zimbabwe; 1998.

Sarina P, Zalucki MP. Do predators aggregate in response to pest density in agroecosystems? Assessing within-field spatial patterns. Journal of Applied Ecology. 2005;23.

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