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Response of maize varieties to nitrogen: selection for N-use efficiency in Uganda

By: Kikafunda, J | 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): Bigirwa, G [coaut.] | Friesen, D.K.|Palmer, A.F.E [eds.] | Imanywoha, J [coaut.] | Kyetere, D.T [coaut.] | Nakayima, A [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Nairobi (Kenya) KARI|CIMMYT : 2002Description: p. 233-240.ISBN: 970-648-120-6.Subject(s): Breeding | Farmers | Fertilizers | Maize | Nitrogen | Pollination | Production factors | Uganda | Varieties | CIMMYT | KARI | Hybrids AGROVOCDDC classification: 338.16 Summary: Nitrogen is the most limiting factor in the production of maize in Uganda. The small-scale farmers who produce the bulk of the maize cannot afford the cost of mineral fertilizer and production of organic manure is inefficient. Breeding for nitrogen use efficiency is a viable alternative. In a study to select for N efficiency, 10 trials involving hybrids, synthetics and open pollinated varieties were screened under low and high nitrogen sites at Namulonge Research Institute. A number of entries ranked high under both nitrogen levels in each of the trials. The synthetics and open pollinated varieties seemed to be more stable than the hybrids. The varieties that performed well under both conditions should be considered for further testing for eventual release.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 X630188
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Nitrogen is the most limiting factor in the production of maize in Uganda. The small-scale farmers who produce the bulk of the maize cannot afford the cost of mineral fertilizer and production of organic manure is inefficient. Breeding for nitrogen use efficiency is a viable alternative. In a study to select for N efficiency, 10 trials involving hybrids, synthetics and open pollinated varieties were screened under low and high nitrogen sites at Namulonge Research Institute. A number of entries ranked high under both nitrogen levels in each of the trials. The synthetics and open pollinated varieties seemed to be more stable than the hybrids. The varieties that performed well under both conditions should be considered for further testing for eventual release.

English

0410|AGRIS 0401|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org