Hostname: page-component-77c89778f8-cnmwb Total loading time: 0 Render date: 2024-07-16T10:37:14.488Z Has data issue: false hasContentIssue false
  • English
  • Français

Noxiousness of the african white stem borer, Maliarpha separatella Rag (Pyralidae: Phycitinae) in irrigated paddy fields at lake Alaotra (Madagascar)

Published online by Cambridge University Press:  19 September 2011

G. Bianchi ,
B. Rasoloarison  and
M. Genini
G. Bianchi
Affiliation:
Institute of Plant Sciences, Swiss Federal Institute of Technology, Clausiusstr. 21/CLS, 8092 Zurich, Switzerland
B. Rasoloarison
Affiliation:
Subdivision Régionale de la Protection des Végétaux (S.R.P.V.), Station Alaotra 503, Madagascar
M. Genini
Affiliation:
Project “Protection intégrée en riziculture au Lac Alaotra” (PLI), B.P. 30, Station Alaotra 503, Madagascar
Get access

Abstract

A study of the noxiousness of the African white rice stem borer, Maliarpha separatella Rag carried out under controlled field conditions has revealed that the impact of this pest on the yield and its components is assessable. For mean infestation rates up to 68% during the period of highest sensitivity of a paddy rice culture (second half of tillering to panicle initiation), no significant decrease could be observed in the number of panicles, nor any significant increase in the number of white heads and the number of empty grains per hill. However, with increasing infestation rates, the number of immature panicles increased and the number and weight of filled grains per hill decreased. An explorative analysis of the infestation rate-yield loss relationship, showed that a sigmoid model describes this interdependence appropriately. The proposed economic injury level (EIL), is here considered more the result of an approach, which had as its goal the re-definition of the status of the pest than as an instrument of a chemical control programme with treatments based on an action threshold.

Résumé

Une étude de la nuisibilité du borer blanc africain du riz, Maliarpha separatella Rag. conduite en plein champ et en conditions contrôlées, montre que l'impact de ce phytophage sur le rendement et ses composantes est mesurable. Des infestations moyennes allant jusqu'à 68% des tiges infestées au moment de plus grande sensibilité de la culture (deuxième mioitié du tallage jusqu'à l'initiation paniculaire) n'ont aucun effet sur le nombre total de panicules, sur le nombre de têtes blanches et sur le nombre de grains stériles par touffe. On observe par centre une augmentation du nombre de panicules immatures et une diminution du nombre et du poids des grains fertiles. Une analyse explorative de la relation taux d'infestation-perte de rendement montre qu'un modèle de type sigmoïde décrit cette interdépendence de façon convenable. Le seuil d'intervention proposé dans la deuxième partie de ce travail n'est pas consideré eomme l'doutil d'une stratégic de traitment au seuil mais comme le résultat d'une approche qui avait comme but la redéfinition du statut de ce phytophage.

Keywords

Madagascarrice stem borersMaliarpha separatellaPhycitinaeyield losseconomic injury levelintegrated pest managementMadagascarforeurs du rizMaliarpha separatellaPhycitinaepertes de rendementseuil de toléranceprotection intégrée
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 14 , Issue 5-6 , December 1993 , pp. 667 - 673
Copyright
Copyright © ICIPE 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Akinsola, E. A. and Agyen-Sampong, M. (1984) The ecology, bionomics and control of rice stem-borers in West Africa. Insect Sci. Applic 5, 697ndash;77.Google Scholar
Akinsola, E. A. (1984) Effects of rice stem-borer infestation on grain yield and yield components. Insect Sci. Applic. 5, 91–94.Google Scholar
Anonymous (1977) Special Research Project, Annual Report of the West African Rice Development Association (WARDA), No. 3, Monrovia, Liberia.Google Scholar
Baumgärtner, J., Regev, U., Rahalivavololona, N., Graf, B., Zahner, P. and Delucchi, V. (1989) Rice production in Madagascar, regression analysis with particular reference to pest control. Agric. Ecosystems Environ. 30, 37–47.CrossRefGoogle Scholar
Bianchi, G., Baumgärtner, J., Delucchi, V., Rahalivavololona, N., Skillman, S. and Zahner, P. (1989) Sampling egg batches of Maliarpha separatellaRsLg. (Lep., Pyralidae) inMadagascan rice fields. Trop. Pest Manage. 35, 420–424.CrossRefGoogle Scholar
Bianchi, G., Baumgartner, J., Delucchi, V. and Rahalivavololona, N. (1990) Modèle de population pour la dynamique de Maliarpha separatella Ragonot (Pyralidae, Phycitinae) dans les rizières malgaches du Lac Alaotra. J. Appl. Entomol. 110, 384–397.CrossRefGoogle Scholar
Blanc-Pamard, C. (1986) Autour du riz, le difficile face-à-face des pay sans et de la SOMALAC dans la cuvette du Lac Alaotra (Hautes Terres centrales de Madagascar), Collection Documents Systèmes Agraires, Département Systèmes Agraires du CIRAD, Montpellier, No. 6, 461–479.Google Scholar
Brenière, J., Rodriguez, H. and Ranaivosoa, H. (1962) Un ennemi du riz a Madagascar, Maliarpha separatella Rag. ou borer blanc. L'Agron. Trop. 17, 223–301.Google Scholar
Cleveland, W. S. (1979) Robust locally weighted regression and smoothing scatter plots. J. Am. Stat. Assoc. 74, 829–836.CrossRefGoogle Scholar
FAO (1971) Crop loss assessment methods. FAO Manual on the Evaluation and Prevention of Losses by Pests, Disease and Weeds. FAO by the Commonwealth Agricultural Bureaux, Alden Press, Oxford.Google Scholar
FAO (1988) Integrated Pest Management in Rice in Indonesia. Status after three crop seasons, perspectives for farmers training in Jakarta, May 1988.Google Scholar
Ho, D. T. (1986) Damage and yield loss caused by stem borers in irrigated rice in Kenya. Trop. Agric. 63, 201–204.Google Scholar
Hodkinson, M. K. and Hughes, I. D. (1982) Insect Herbivory. Chapman and Hall, London.CrossRefGoogle Scholar
Li, C. S. (1985) Sugar cane insect pests with special reference to the moth borers in the Markham Valley, Papua New Guinea. MUSHI 50, 13–18.Google Scholar
MPARA (Ministère de la Production Agricole et de la Réforme Agraire de la République Démocratique de Madagascar) (1984) Taona Zina II, Rapport a execution pour la campagne 1984.Google Scholar
Mumford, J. D. and Norton, G. A. (1984) Economics of decision making in pest management. Annu. Rev. Entomol. 29, 157–174.CrossRefGoogle Scholar
Njokah, J., Kibuka, G. and Raina, A. K. (1982) Some aspects of population dynamics of Maliarpha separatella (Rag.) on rice in the Lake Basin areas of Kenya. Insect Sci. Applic. 3, 271–273.Google Scholar
PANS (1970) Pest control in rice. PANS Manuals (Pest Articles and News Summaries), No. 3, Publ. in Britain by the Ministry of Overseas Development.Google Scholar
Pedigo, L. P., Hutchins, S. H. and Higley, L. G. (1986) Economic injury levels in theory and practice Annu. Rev. Entomol. 31, 41–68.CrossRefGoogle Scholar
PLI (1985–1989) Protection intégrée en riziculture au Lac Alaotra (Madagascar), République Démocratique de Madagascar et Confédération Suisse (DDA). Institut de Phytiatrie, EPF, Zürich. Rapports d'Activité Nos. 1 (1985), 2 (1986), 3 (1987), 4 (1988), 5 (1989).Google Scholar
Pollet, A. (1981) Maliarpha separatella Ragonot (Pyralidae, Phycitinae) sur riz irrigué en Côte d'lvoire Centrale, Travaux et documents de l'ORSTOM No. 140, Paris.Google Scholar
Sandhu, G. S. and Chander, Ramesh (1975) Occurrence of green striped borer, Maliarpha separatella Ragonot on sorghum in Punjab. J. Bombay Nat. Hist. Soc. 72, 3, 872–873.Google Scholar
Shoemaker, C. A. (1984) The optimal timing of multiple applications of residual pesticides: deterministic and stochastic analyses. In Pest and Pathogen Control: Strategic, Tactical, and Policy Models (Edited by Conway, G. R.). International Series on Applied Systems Analysis, John Wiley and Sons, London.Google Scholar
Stern, V. M., Smith, R. R., Van den Bosh, R. and Hagen, K. S. (1959) The integrated control concept. Hilgardia 29, 81–101.CrossRefGoogle Scholar