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Action Thresholds for the Management of Pod-borer, Adisura atkinsoni Moore on Field Bean, Lablab purpureus*

Published online by Cambridge University Press:  19 September 2011

P. N. Krishna Moorthy ,
G. C. Tewari  and
K. Srinivasan
P. N. Krishna Moorthy
Affiliation:
Indian Institute of Horticultural Research, Hesseraghatta Lake Post, Bangalore-560089, India
G. C. Tewari
Affiliation:
Indian Institute of Horticultural Research, Hesseraghatta Lake Post, Bangalore-560089, India
K. Srinivasan
Affiliation:
Indian Institute of Horticultural Research, Hesseraghatta Lake Post, Bangalore-560089, India
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Abstract

Management programmes for the use of action thresholds to initiate insecticide treatments for controlling pod-borer, Adisura atkinsoni on field bean were evaluated in comparison with standard sprays on calendar basis. Results of three field experiments revealed that management based on initial spray at peak egg laying on tender pods, followed by sprays to maintain 1.5 flat pod damage/inflorescence realised maximum benefit: cost ratio. This management also resulted in reduced insecticide usage.

Résumé

Nous avons comparé des programmes d'emploi des insecticides pour limiter l'insecte perceur, Adisura atkinsoni, sur les haricots de champs, Lablab purpureus, basés sur la notion de seuils d'action avec des programmes classiques de pulvérisations d'insecticides periodiques. Les résultats obtenus de trois essais aux champs ont montré que le programme comprenant une pulvérisation initiale d'insecticide à l'époque de ponte maximale d'oeux sur les cosses tendres suivie de pulvérisations pour maintenir les dégâts à un taux de 1.5 cosses plates percées par inflorescence donnait le rapport maximal de bénefices aux coûts. Ce programme conduisait également à une reduction de la consommation d'insecticide.

Keywords

Adisura atkinsoniLablab purpureuspeak egg layingflat pod damagemonocrotophosAdisura atkinsoniLablab purpureusla période de ponte maximale d'oeuxdégâts de cosses platesmonocrotophos
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 4 , August 1988 , pp. 489 - 492
Copyright
Copyright © ICIPE 1988

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References

REFERENCES

Chakravarthy, A. K. (1983) Relative abundance of field bean (Lablab niger Medik) pod-borers and distribution patterns of the borer, Adisura atkinsoni Moore. Insect Sci. Applic. 4, 401–406.Google Scholar
Krishna Moorthy, P. N., Prasada Rao, G. S. and Tewari, G. C. (1986) Spatial distribution of eggs laid and pods bored by Adisura atkinsoni Moore (Noctuidae: Lepidoptera) in field bean. Insect Sci. Applic. 7, 737–740.Google Scholar
Krishna Moorthy, P. N. and Tewari, G. C. (1987) Field efficacy and economics of newer insecticides against Adisura atkinsoni Moore infesting field beans. Legume Res. 10, 97–101.Google Scholar