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Improving tolerance to abiotic stresses in staple crops: a random or planned process?

By: Edmeades, G.O | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Campos, H [coaut.] | Schussler, J [coaut.] | Banziger, M [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 12.ISBN: 970-648-106-0.Subject(s): Crop husbandry | Maize | Production factors | Soil biology | Tropical zones | Water availability | Hybrids AGROVOC | Plant breeding AGROVOCSummary: Production Environment Staple crops in modern production systems are exposed to an environment characterized by increased internal competition for assimilates and external competition for nutrients. Key abiotic stresses are water and nitrogen deficits, and soil acidity. Significant yield losses due to drought occur about one year in four to five in the western US Com Belt, although drought and nitrogen (N) deficiencies are more frequent and intense in the tropics. Despite improvements in agronomic management, shortages of inputs and good quality land are common in the tropics. Increasing variation in weather over time is enhancing the risk of severe stress, and rising costs of water and N are focusing research on input-use efficiency. Finally, interplant competition is intensifying in maize, where plant densities are increasing by an average of 700 plants/ha/yr in temperate production systems.Collection: CIMMYT Staff Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-2859 (Browse shelf) 1 Available 632519
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Production Environment Staple crops in modern production systems are exposed to an environment characterized by increased internal competition for assimilates and external competition for nutrients. Key abiotic stresses are water and nitrogen deficits, and soil acidity. Significant yield losses due to drought occur about one year in four to five in the western US Com Belt, although drought and nitrogen (N) deficiencies are more frequent and intense in the tropics. Despite improvements in agronomic management, shortages of inputs and good quality land are common in the tropics. Increasing variation in weather over time is enhancing the risk of severe stress, and rising costs of water and N are focusing research on input-use efficiency. Finally, interplant competition is intensifying in maize, where plant densities are increasing by an average of 700 plants/ha/yr in temperate production systems.

Research and Partnership Program

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

INT1888

CIMMYT Staff Publications Collection

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Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org