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Head smut disease of maize in Nepal

By: Manandhar, G | Centro Internacional de Mejoramiento de Maíz y Trigo CIMMYT, Nepal (India) | Proceedings of a Maize Symposium Kathmandu (Nepal) 3-5 Dec 2001.
Contributor(s): Rajbhandari, N.P.|Ransom, J.K.|Adhikari, K.|Palmer, A.F.E [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Kathmandu (Nepal) NARC|CIMMYT : 2002Description: p. 135-141.ISBN: 99933-205-1-X.Subject(s): Maize | Nepal | Plant diseases | Smuts | Sphacelotheca | Ustilago | CIMMYT | NARC | Zea mays AGROVOC | Genotypes AGROVOC | Hybrids AGROVOCDDC classification: 631.536 Summary: Head smut (Sporisorium reiliana) is a sporadic disease of maize (Zea mays) in the hills of Nepal. In general, yield reduction due to smut is ignored. Farmers are facing problem of the smut. All maize genotypes including released ones are susceptible to it under artificial inoculated conditions. The number of genotypes included was 9, 14 and 16 in field tests during 1990, 1991 and 1998, respectively. In each test, Khumal Yellow, Ganesh-2, Arun-1, Arun-2, Arun-4, showed the smut symptoms. In addition to sweet corn, popcorn, and hybrid B840 which were supposed to be resistant to the disease also showed the smut in one or more years. The influence of seeding date on the incidence of the smut was significant. The ranges of the smut incidence were 3-29% and 7-19 %, respectively during 1993 and 1994 maize seasons. The smut incidence was in a decreasing trend in both the years with the highest percent in April or early May sown plants as compared to that sown in late Mayor June. Head smut incidence was not different between infested soil and contaminated seed. Significant differences in the smut incidence were observed in fungicidal seed treatment experiments during 1990 to 1996. Out of 15 fungicides Sumi-8, Tilt-100, RaxiI-2, Baytan- 10 and Bayleton-5 have proved effective against the smut.Collection: CIMMYT Publications Collection
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Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 631.536 RAJ (Browse shelf) 1 Available Q631641
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Head smut (Sporisorium reiliana) is a sporadic disease of maize (Zea mays) in the hills of Nepal. In general, yield reduction due to smut is ignored. Farmers are facing problem of the smut. All maize genotypes including released ones are susceptible to it under artificial inoculated conditions. The number of genotypes included was 9, 14 and 16 in field tests during 1990, 1991 and 1998, respectively. In each test, Khumal Yellow, Ganesh-2, Arun-1, Arun-2, Arun-4, showed the smut symptoms. In addition to sweet corn, popcorn, and hybrid B840 which were supposed to be resistant to the disease also showed the smut in one or more years. The influence of seeding date on the incidence of the smut was significant. The ranges of the smut incidence were 3-29% and 7-19 %, respectively during 1993 and 1994 maize seasons. The smut incidence was in a decreasing trend in both the years with the highest percent in April or early May sown plants as compared to that sown in late Mayor June. Head smut incidence was not different between infested soil and contaminated seed. Significant differences in the smut incidence were observed in fungicidal seed treatment experiments during 1990 to 1996. Out of 15 fungicides Sumi-8, Tilt-100, RaxiI-2, Baytan- 10 and Bayleton-5 have proved effective against the smut.

English

0304|AGRIS 0301|AL-Maize Program|R01PROCE

Juan Carlos Mendieta

CIMMYT Publications Collection

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