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Habitat management strategies for the control of cereal stemborers and striga in maize in Kenya

Published online by Cambridge University Press:  19 September 2011

Z. R. Khan ,
J. A. Pickett ,
L. Wadhams  and
F. Muyekho
Z. R. Khan
Affiliation:
International Centre of Insect Physiology and Ecology, P.O. Box 30772, Nairobi, Kenya
J. A. Pickett
Affiliation:
IACR-Rothamsted, Harpenden, Hertfordshire AL5 2JQ, UK
L. Wadhams
Affiliation:
IACR-Rothamsted, Harpenden, Hertfordshire AL5 2JQ, UK
F. Muyekho
Affiliation:
Kenya Agricultural Research Institute, P.O. Box 450, Kitale, Kenya
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Abstract

Maize is the principal food and cash crop for millions of people in the predominantly mixed crop-livestock farming systems in Kenya. Stemborers and striga (Striga hermonthica) are major constraints to increased maize production in eastern Africa. An intercropping and trap crop system has been developed, using a ‘push-pull’ strategy, for the control of stemborers in small scale maize farming systems. The ‘push-pull’ strategy involves trapping stemborers on highly susceptible trap plants (pull) and driving them away from the crop using repellent intercrops (push). Napier grass (Pennisetum purpureum Schumach) and Sudan grass (Sorghum vulgare sudanense Stapf.) are used as trap plants, whereas molasses grass (Melinis minutiflora Beauv.) and two species of desmodium (Desmodium uncinatum Jacq. and Desmodium intortum Urb.) repel ovipositing stemborers. The integrated ‘push-pull’ strategies were shown to increase parasitism of stemborers through attraction of parasitoids to one of the intercrops, molasses grass. The leguminous intercrop, silver leaf desmodium, drastically reduced damage to maize by the parasitic weed, striga. This aspect was further investigated and developed for integration with stemborer control. On-farm trials with farmers in Kenya have shown significant yield increases in maize farming.

Résumé

Le maïs est la principale nourriture et culture commerciale pour des millions de personnes pratiquant le système agricole prédominant au Kenya, associant la culture et l'élevage. Les foreurs des tiges et le striga (Striga hermonthica) sont les contraintes majeures de l'accroissement de la production de maïs en Afrique de l'Est. Un système de cultures associées et pièges, utilisant une stratégie de répulsion-attraction, à été développé pour contrôler les foreurs des tiges dans les petites exploitations agricoles. La stratégie de répulsion-attraction consiste à piéger les foreurs de tiges sur des plantes pièges fortement attractives (attraction) et à les éloigner de la culture en utilisant des cultures associées répulsives (répulsion). On utilise l'herbe à éléphants (Pennisetum purpureum Schumach) et l'herbe du Soudan (Sorghum vulgare sudanense Stapf) comme plantes pièges tandis que l'herbe à mélasse (Melinis minutiflora Beauv) et deux espèces de desmodium (Desmodium uncinatum Jacq. et Desmodium intortum Urb.) repoussent les foreurs de tiges prêts à pondre. La stratégie de répulsion-attraction permet d'augmenter le parasitisme des foreurs des tiges en attirant les parasitoïdes vers l'une des cultures associées, l'herbe à mélasse. L'association du desmodium à feuilles argentées (Légumineuse), réduit de façon drastique les dégâts causés au maïs par l'herbe parasite striga. Ce résultat a été approfondi et développé pour être associé avec la lutte contre les foreurs des tiges. Des essais au champ réalisés avec des fermiers au Kenya ont montré des augmentations de rendements significatives dans la culture du maïs.

Keywords

stemborersmaizehabitat management‘push-pull’KenyaStriga hermonthicaforeurs des tigesmaïsgestion de l'habitatrépulsion-attractionKenyaStriga hermonthica
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 21 , Issue 4 , December 2001 , pp. 375 - 380
Copyright
Copyright © ICIPE 2001

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References

Ampofo, J. K. O. (1986) Maize stalk borer (Lepidoptera: Pyralidae) damage and plant resistance. Environ. Entomol. 15, 1124–1129.CrossRefGoogle Scholar
Berner, D. K., Kling, J. G. and Singh, B. B. (1995) Striga research and control: A perspective from Africa. Plant Disease 79, 652–660.CrossRefGoogle Scholar
ECAMAW (1998) The Five-Year Plan for the Eastern and Central Africa Maize and Wheat (ECAMAW) Research Network', Research Froposal, Entebbe.Google Scholar
Goletti, F. and Govindan, K. (1995) Methods for agricultural input market reform research: A tool kit of techniques, MSSD Discussion Paper No. 6, International Food Policy Research Institute (IFPRI), Washington, DC.Google Scholar
Khan, Z. R., Ampong-Nyarko, K., Chiliswa, P., Hassanali, A., Kimani, S., Lwande, W., Overholt, W. A., Pickett, J. P., Smart, L. E., Wadhams, L. J. and Woodcock, C. M. (1997a) Intercropping increases parasitism of pests. Nature 388, 631–632.CrossRefGoogle Scholar
Khan, Z. R., Chiliswa, P., Ampong-Nyarko, K., Smart, L. E., Polaszek, A., Wandera, J. and Mulaa, M. A. (1997b) Utilisation of wild gramineous plants for the management of cereal stemborers in Africa. Insect Sci. Applic. 17, 143–150.Google Scholar
Khan, Z. R., Pickett, J. A., Van den Berg, J., Wadhams, L. J., and Woodcock, C. M. (2000) Exploiting chemical ecology and species diversity: Stemborer and striga control for maize and sorghum in Africa. Pest Manage. Sci. 56, 957–962.Google Scholar
Lagoke, S. T. O., Parkinson, V. and Agunbiade, R. M. (1991) Parasitic weeds and control methods in Africa, pp. 3–14. In Combating Striga in Africa (Edited by Kim, S. K.). International workshop organised by IITA, ICRISAT and IDRC, 22–24 August 1988, IITA, Ibadan, Nigeria.Google Scholar
M'Boob, S. S. (1989) A regional programme for West and Central Africa, pp. 190–194. In Striga—Improved Management in Africa (Edited by Tobson, T. O. and Broad, H. R.). Proceedings of the FAO/OAU All-African Government Consultation on Striga control. 20–24 October 1988, Maroua, Cameroon. FAO/OAU.Google Scholar
Miller, J. R. and Cowles, R. S. (1990) Stimulo-deterrent diversion: A concept and its possible application to onion maggot control. J. Client. Ecol. 16, 3197–3212.Google ScholarPubMed
Musselman, L. J., Bhrathalakshmi, , Safa, S. B., Knepper, D. A., Mohamed, K. L., and White, C. L. (1991) Recent research on biology of Striga asiatica, S. gesnerioides and S. hermonthica, pp. 31–41. In Combating Striga in Africa. International workshop organised by IITA, ICRISAT and IDRC, 22–24 August 1988, IITA, Ibadan, Nigeria (Edited by Kim, S. K.).Google Scholar
Nelson, R. A., Cramb, R. A. and Mamicpic, M. A. (1996) Erosion/productivity modelling of maize farming in the Philippine uplands. Part IV: Economic analysis of alternative farming methods', SEARCA-UQ Uplands Research Project, Working Paper No. 15, Los Baños, Philippines.Google Scholar
Pyke, B., Rice, M., Sabine, B. and Zalucki, M. (1987) The push-pull strategy—behavioural control of Heliothis. Aust. Cotton Grower, May-July, pp. 7–9.Google Scholar
SAS Institute (1996) SAS/STAT Software: Change and Enhancement Through Release 6.11. SAS Institute, Cary, NJ.Google Scholar
Seshu Reddy, K. V. and Sum, K. O. S. (1992) Yieldinfestation relationship and determination of economic injury level of the stemborer, Chilo partellus (Swinhoe) in three varieties of maize, Zea mays L. Maydica 37, 371–376.Google Scholar
Smart, L. E., Stevenson, J. H. and Walters, J. H. H. (1989) Development of field trial methodology to assess short-term effects of pesticides on beneficial arthropods in arable crops. Crop Protection 8, 169–180.CrossRefGoogle Scholar
Van den Berg, J., Rebe, M., De Bruyn, J. and Van Hamburg, H. (2001) Developing habitat management systems for graminaceous stemborers in South Africa. Insect Sci. Applic. (this issue).CrossRefGoogle Scholar