Effectiveness of Different Spay Timing Methods for the Control of Lepidopteron Pests in Cotton

Mapuranga Rangarirai; Jimu Francis; Mubvekeri Washington

Effectiveness of Different Spay Timing Methods for the Control of Lepidopteron Pests in Cotton

Mapuranga Rangarirai * §

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Jimu Francis

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Mubvekeri Washington

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§ Cotton Research Institute

Effectiveness of Different Spay Timing Methods for the Control of Lepidopteron Pests in Cotton

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Abstract

Background: Application of chemicals for the control of Helicoverpa armigera and Diparopsis castanea is based on egg threshold, while for Erias insulana and E. biplaga larval counts are used. In Zimbabwe the traditional farmer practice involves use of weekly spraying, fortnightly spraying and spraying at first sight of damaged squares. The methods may be less effective, costly, damaging to the environment and labour intensive. Experiments were conducted for three consecutive seasons from 2010/11 season up to 2012/13 season to evaluate the spray timing methods. Spraying at bollworm egg threshold level was the standard. The trial was laid as a randomised complete block design replicated four times at Cotton Research Institute, Dande and Umguza.

References

7 Cites in Article

Reference Format

1. (2012). Cotton Scouting Handbook, Alabama Cooperative Extension System. Cotton Scouting Handbook, Alabama Cooperative Extension System
2. M Boyd,B Phipps,A Wrather (2004). Integrated pest management Cotton pests scouting and management. Integrated pest management Cotton pests scouting and management
3. (1998). Cotton handbook, Zimbabwe. Cotton handbook, Zimbabwe
4. P Daka (2003). A study of Deltamethrin in sediment from the Okavango delta -Botswana. A study of Deltamethrin in sediment from the Okavango delta -Botswana
5. J Greene (2012). Cotton Insect Pest Management Update. Cotton Insect Pest Management Update
6. I Javaid (2008). Application of insecticides on cotton in Zambia: Timing of spray applications. Tropical Pest Management, 36(1)
7. P Jowah (1994). Studies on timing of insecticide applications on small scale cotton farmers. Studies on timing of insecticide applications on small scale cotton farmers

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Mapuranga Rangarirai, Jimu Francis, Mubvekeri Washington. 2017. "Effectiveness of Different Spay Timing Methods for the Control of Lepidopteron Pests in Cotton". Global Journal of Science Frontier Research - D: Agriculture & Veterinary GJSFR-D Volume 16 (GJSFR Volume 16 Issue D8).

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GJSFR Volume 16 Issue D8

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

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Classification

GJSFR-D Classification FOR Code: 070199

Submission ReceivedAugust 26, 2016
Peer Review Double Blind
Handling Editor
Accepted September 22, 2016
Published October 5, 2016

Version of record

v1.2

Issue date

February 5, 2017

Language

English

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Article Matrices

Total Score: 147

Country: Zimbabwe

Subject: Global Journal of Science Frontier Research

Authors: Mapuranga Rangarirai, Jimu Francis, Mubvekeri Washington (PhD/Dr. count: 0)

View Count (all-time): 231

Total Views (Real + Logic): 1182

Total Downloads (simulated): 90

Publish Date: 2016 10, Wed

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Total Views: 1.2K

Total Downloads: 90

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