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Returns to Research and Diffusion Investments on Wilt Resistance in Pigeonpea

OAR@ICRISAT

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Relation http://oar.icrisat.org/1041/
 
Title Returns to Research and Diffusion Investments on Wilt Resistance in Pigeonpea
 
Creator Bantilan, M C S
Joshi, P K
 
Subject Pigeonpea
 
Description 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.
 
Publisher International Crops Research Institute for the Semi-Arid Tropics
 
Date 1996
 
Type Monograph
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/1041/1/RA_000306.pdf
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.