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Use of a Moth Production Index to Assess the Impact of Sorghum Varieties in Management of Chilo Partellus in Southern Africa

Published online by Cambridge University Press:  19 September 2011

J. van den Berg
J. van den Berg
Affiliation:
ARC-Grain Crops Institute, Private Bag X 1251, Potchefstroom, 2520 South Africa
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Abstract

Two field experiments were conducted over two seasons to assess the effect of resistance levels of sorghum varieties on follow-up generations of Chilo partellus. Sorghum varieties, released by the Southern African Development Community/International Crops Research Institute for the Semi-Arid Tropics (SADC/ICRISAT) through the Sorghum and Millet Improvement Program (SMIP) in the southern African region, were evaluated for their ability to provide for larvae to complete development in stalks and emerge as moths. Plants were naturally infested by C. partellus. The number of moth exit holes per stem was used to calculate survival of larvae to the adult stage. A moth production index was calculated to estimate the role of each sorghum variety in area-wide suppression of stemborer abundance. Between 97,500 and 213,125 moths per hectare emerged from the different sorghum varieties in trial 1 while between 0 and 77,500 emerged per hectare in trail 2. Resistant sorghum varieties may help suppress pest population build-up and be of considerable value in development of IPM systems for resource-poor farmers.

Keywords

stemborersorghumChilo partellusIPMresistanceSADC-regionSouth Africaforeur de tigessorghoChilo partelluscontrôle intégré des ravageursrésistancerégion de SADCAfrique du Sud
Type
Articles
Information
International Journal of Tropical Insect Science , Volume 17 , Special Issue 1: Ecology and Management of Tropical Gramineous Stemborers , March 1997 , pp. 151 - 155
Copyright
Copyright © ICIPE 1997

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References

REFERENCES

Bessin, R. T., Reagan, T. E. and Martin, F. F. (1990) A moth production index for evaluating sugarcane cultivars for resistance to the sugarcane borer (Lepidoptera: Pyralidae). J. Leon. Entomol. 83, 221–225.Google Scholar
ICRISAT (1993a) SADC/ICRISAT Sorghum and Millet Improvement Program, Phases III and IV, 15 September 1993–15 September 2003 (Semi-formal publication).Google Scholar
ICRISAT (1993b) SADC/ICRISAT 1992 drought relief emergency production of sorghum and pearl millet seed: Impact assessment. ICRISAT Southern and Eastern Africa Region Working Paper 93/01.SADC/ICRISAT Sorghum and Millet Improvement Program, P.O. Box 776, Bulawayo, Zimbabwe (Semi-formal publication).Google Scholar
Leuschner, K. (1989) A review of stem borer screening procedures, pp. 129–135. In International Workshop on Sorghum Stem Borers, 17–19 November 1987, ICRISAT Centre, Patancheru, A.P. 502 324, India.Google Scholar
Mlambo, S. S. (1983) The status of cereal stem borer research in Zimbabwe. Insect Sci. Applic. A, 221–222.Google Scholar
Mushonga, J. N. and Rao, S. A. (1986) Traditional food crops in Zimbabwe. 2. Sorghum. Zimb. agric. J. 83, 121–124.Google Scholar
Nour, A. M. and Saxena, K. N. (1995) Screening new sorghum hybrids for resistance to stem borer Chilo partellus and for grain yield, pp. 75–79. In Proceedings of the 10th Meeting and Scientific Conferenceof the African Association of Insect Scientists, 5–10 September 1993, Mombasa, Kenya. African Association of Insect Scientists, Nairobi.Google Scholar
Nwanze, K. F. and Mueller, R. A. E. (1989) Management options for sorghum stem borers for farmers in the semi-arid tropics. In International Workshop on Sorghum Stem Borers, 17–19 November 1987, ICRISAT Centre, Patancheru, A.P. 502 324, India.Google Scholar
Rohrbach, D. D. and Malaza, M. (1993) The sorghum agenda for Swaziland: A report of a reconnaissance survey, pp. 26–39. In Proceedings of the 1st National Sorghum and Pearl Millet Technology Transfer Workshop Swaziland, 22nd–25th July 1993, Nhlango Sun Hotel, Swaziland, SADC/ICRISAT/SMIP, Bulawayo, Zimbabwe. 134 pp.Google Scholar
Seshu Reddy, K. V. (1985) Integrated approach to the control of sorghum stem borers, pp. 205–215. In Proceedings of the International Sorghum Entomology Workshop, 15–21 July 1984, Texas A&M University, College Station, TX, USA. ICRISAT, Patancheru, A.P. 502 324, India.Google Scholar
Sharma, H. C., Taneja, S. L., Leuschner, K. and Nwanze, K. F. (1992) Techniques to screen sorghums for resistance to insect pests. ICRISAT Information Bulletin no. 32. Patancheru, A.P. 502 324, India.Google Scholar
Sithole, S. Z. (1989) Sorghum stem borers in Southern Africa, pp. 41–47. In International Workshop onSorghum Stem Borers, 17–19 November 1987, ICRISAT Centre, Patancheru, A.P. 502 324, India.Google Scholar
Teetes, G. L. (1985) Sorghum entomology research: Programs and needs in the developed world in relation to developing countries, pp. 21–27. In Proceedings of the International Sorghum Entomology Workshop, 15–21 July 1984, Texas A&M University, College Station, TX, USA. ICRISAT, Patancheru, A.P. 502 324, India.Google Scholar
Van den Berg, J. and Van Rensburg, J. B. J. (1991) Unavoidable losses in insecticidal control of Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) in maize and grain sorghum. S. Afr. J. Plant Soil 8, 12–16.CrossRefGoogle Scholar