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Farming components responsible for gray leaf spot disease severity in districts of contrasting incidence

By: Bigirwa, G | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT) Kenya | 7. Proceedings of the Eastern and Southern Africa Regional Maize Conference Nairobi (Kenya) 5-11 Feb 2002.
Contributor(s): Adipla, E [coaut.] | Friesen, D.K.|Palmer, A.F.E [eds.] | Lipps, P.E [coaut.] | Pratt, R.C [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Nairobi (Kenya) KARI|CIMMYT : 2002Description: p. 85-87.ISBN: 970-648-120-6.Subject(s): Agricultural economics | Cercospora coffeicola | Crop husbandry | Environmental conditions | Farmers | Maize | Plant diseases | Varieties | Yield factors | CIMMYT | KARI | Zea mays AGROVOC | Plant breeding AGROVOCDDC classification: 338.16 Summary: Gray leaf spot is a disease of economic importance in many maize growing countries including Uganda. During a Countrywide survey conducted in Uganda in 1997, several factors which predispose maize crops to the disease were found being practised by farmers. The study was carried out to ascertain the role of farmers' practices in causing GLS disease. Three factors; leaving stover on the soil surface, variety and continuous cropping of maize were noted to playa significant role in perpetuating the disease. In Mubende, a district of high incidence, leaving stover on the soil surface was practised by 40% of the collaborating farmers and the associated maize crop had average severity of 3. I during the 2000B season; and 35% of farmers with average severity of 2.7 in the 2001 A season. In Tororo, it was practised by 40% and 45% of the collaborating farmers with average severity of 2.3 and 2.8 in the 2000 B and 2001 A seasons, respectively. The type of variety, particularly hybrid 624 was highly associated with high incidence and severity of 69.6% and 2.8 respectiveIy, in Tororo. On the other hand, in Mubende district it was cropping history (monocropping) and crop management (leaving stover on the soil surface), which were associated with high incidence and severity.Collection: CIMMYT Publications Collection
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Book CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 338.16 FRI (Browse shelf) 1 Available E630188
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Gray leaf spot is a disease of economic importance in many maize growing countries including Uganda. During a Countrywide survey conducted in Uganda in 1997, several factors which predispose maize crops to the disease were found being practised by farmers. The study was carried out to ascertain the role of farmers' practices in causing GLS disease. Three factors; leaving stover on the soil surface, variety and continuous cropping of maize were noted to playa significant role in perpetuating the disease. In Mubende, a district of high incidence, leaving stover on the soil surface was practised by 40% of the collaborating farmers and the associated maize crop had average severity of 3. I during the 2000B season; and 35% of farmers with average severity of 2.7 in the 2001 A season. In Tororo, it was practised by 40% and 45% of the collaborating farmers with average severity of 2.3 and 2.8 in the 2000 B and 2001 A seasons, respectively. The type of variety, particularly hybrid 624 was highly associated with high incidence and severity of 69.6% and 2.8 respectiveIy, in Tororo. On the other hand, in Mubende district it was cropping history (monocropping) and crop management (leaving stover on the soil surface), which were associated with high incidence and severity.

English

0409|AGRIS 0401|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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