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The potential of a herbicide resistant maize technology for Striga control in Africa

Author

Listed:
  • De Groote, Hugo
  • Wangare, Lucy
  • Kanampiu, Fred
  • Odendo, Martins
  • Diallo, Alpha
  • Karaya, Haron
  • Friesen, Dennis

Abstract

Striga is an obligate parasitic weed that attacks cereal crops in sub-Saharan Africa. In Western Kenya, it has been identified by farmers as their major pest problem in maize. A new technology, consisting of coating seed of imidazolinone resistant (IR) maize varieties with the imidazolinone herbicide, imazapyr, has proven to be very effective in controlling Striga on farmer fields. To bring this technology to the farmer, a sustainable delivery system needs to be developed, preferably with substantial participation of the private sector. To help extension agents and seed companies to develop appropriate strategies, the potential for this technology was analyzed by combining different data sources into a Geographic Information System (GIS). Superimposing secondary data, field surveys, agricultural statistics and farmer surveys made it possible to clearly identify the Striga-prone areas in western Kenya. Results found that Striga affected a maize area of 246,000 ha annually, with a population of 6.4 million people and maize production of 580,000 tons, or 81 kg/person. Population density in this area is high at 359 people/km2. A survey of 123 farmers revealed that 70% of them have Striga in their fields. A contingent valuation (CV) survey indicated that farmers would, on average, be willing to buy 3.67 kg of the IR-maize seed each at current seed prices, sufficient to sow 44% of their maize area. By extrapolation over the maize area in the zone, total potential demand for IR-maize seed is estimated at 2000-2700 tons annually. Similar calculations, but based on much less precise data and expert opinion rather than farmer surveys or trials, gives an estimate of the potential demand for IR-maize seed in Africa of 153,000 tons.

Suggested Citation

  • De Groote, Hugo & Wangare, Lucy & Kanampiu, Fred & Odendo, Martins & Diallo, Alpha & Karaya, Haron & Friesen, Dennis, 2008. "The potential of a herbicide resistant maize technology for Striga control in Africa," Agricultural Systems, Elsevier, vol. 97(1-2), pages 83-94, April.
    • Handle: RePEc:eee:agisys:v:97:y:2008:i:1-2:p:83-94
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    References listed on IDEAS

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    1. Whittington, Dale, 1998. "Administering contingent valuation surveys in developing countries," World Development, Elsevier, vol. 26(1), pages 21-30, January.
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    1. Menale Kassie & Zewdu Abro & Tesfamicheal Wossen & Samuel T. Ledermann & Gracious Diiro & Shifa Ballo & Lulseged Belayhun, 2020. "Integrated Health Interventions for Improved Livelihoods: A Case Study in Ethiopia," Sustainability, MDPI, vol. 12(6), pages 1-21, March.
    2. De Groote, Hugo & Rutto, Esther & Odhiambo, George & Kanampiu, Fred & Khan, Zeyaur & Coe, Richard & Vanlauwe, Bernard, 2010. "Participatory evaluation of integrated pest and soil fertility management options using ordered categorical data analysis," Agricultural Systems, Elsevier, vol. 103(5), pages 233-244, June.
    3. Joshua Sikhu Okonya & Walter Ocimati & Anastase Nduwayezu & Déo Kantungeko & Nicolas Niko & Guy Blomme & James Peter Legg & Jürgen Kroschel, 2019. "Farmer Reported Pest and Disease Impacts on Root, Tuber, and Banana Crops and Livelihoods in Rwanda and Burundi," Sustainability, MDPI, vol. 11(6), pages 1-20, March.
    4. Timothy R. Silberg & Robert B. Richardson & Maria Claudia Lopez, 2020. "Maize farmer preferences for intercropping systems to reduce Striga in Malawi," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 12(2), pages 269-283, April.
    5. Nnanna N. Unachukwu & Abebe Menkir & Adekemi Stanley & Ebenezer O. Farombi & Melaku Gedil, 2020. "Contrasting Response Mechanisms of Maize Lines to Striga hermonthica," Agriculture, MDPI, vol. 10(10), pages 1-18, October.
    6. Jonathan Gressel & Bernal Valverde, 2009. "The other, ignored HIV — highly invasive vegetation," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 1(4), pages 463-478, December.
    7. Fridah Chepchirchir & Beatrice W. Muriithi & Jackson Langat & Samira A. Mohamed & Shepard Ndlela & Fathiya M. Khamis, 2021. "Knowledge, Attitude, and Practices on Tomato Leaf Miner, Tuta absoluta on Tomato and Potential Demand for Integrated Pest Management among Smallholder Farmers in Kenya and Uganda," Agriculture, MDPI, vol. 11(12), pages 1-20, December.
    8. Mamudu, A.Y, 2022. "Striga Hermonthica Suicidal Germination Activity Of Ten Soyabean, Cowpea And Groundnut Varieties In Niger State, Nigeria," Tropical Agroecosystems (TAEC), Zibeline International Publishing, vol. 3(2), pages 63-70, August.
    9. Hugo De Groote & Bernard Vanlauwe & Esther Rutto & George D. Odhiambo & Fred Kanampiu & Zeyaur R. Khan, 2010. "Economic analysis of different options in integrated pest and soil fertility management in maize systems of Western Kenya," Agricultural Economics, International Association of Agricultural Economists, vol. 41(5), pages 471-482, September.
    10. Kassie, Menale & Stage, Jesper & Diiro, Gracious & Muriithi, Beatrice & Muricho, Geoffrey & Ledermann, Samuel T. & Pittchar, Jimmy & Midega, Charles & Khan, Zeyaur, 2018. "Push–pull farming system in Kenya: Implications for economic and social welfare," Land Use Policy, Elsevier, vol. 77(C), pages 186-198.

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