Bantilan, M C S and Joshi, P K (1996) Returns to Research and Diffusion Investments on Wilt Resistance in Pigeonpea. Documentation. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, Andhra Pradesh.
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Abstract
Fusarium wilt caused by Fusarium udum Butler is one of the most widespread and destructive diseases of pigeonpea (Cajanus cajan (L.) Millsp.) in Asia and Africa. An international survey of pigeonpea diseases in Asia, Africa, and the Americas (Kannaiyan et al. 1981), initiated in 1975, showed that the disease occurred in almost all pigeonpea-growing areas on these continents. Subsequent monitoring surveys in 11 major pigeonpeaproducing states in India reported high wilt incidence in three states - Maharashtra (23%), Bihar (18%), and Uttar Pradesh (15%) (Kannaiyan et al. 1984). Surveys in Africa found that wilt was the only major pigeonpea disease in Malawi, Tanzania, and Kenya. Other studies suggested that wilt caused yield reductions of up to 50% (Ryan 1981). Wilt-related production losses in 1977/78 were estimated to be 97 000 t (worth US$ 36.4 million) in India and 14 000 t (worth US$ 5.2 million) in Kenya, Malawi, and Tanzania. Largely on the basis of these survey results, ICRISAT set a high priority for fusarium wilt research in pigeonpea. The research program aimed primarily at identifying resistant lines, conducting multilocational screening for resistance, and developing resistant cultivars. A combination of genetic resistance and cultural practices (crop rotation and mixed- or intercropping) was expected to offer farmers a cost-effective method of controlling the disease.
| Item Type: | Monograph (Documentation) |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Series Name: | Impact Series No. 1 |
| Subjects: | Mandate crops > Pigeonpea |
| Depositing User: | Library ICRISAT |
| Date Deposited: | 28 Sep 2011 07:57 |
| Last Modified: | 18 Mar 2014 05:46 |
| URI: | http://oar.icrisat.org/id/eprint/1041 |
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