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Tropical maize under pre-anthesis drought and low nitrogen supply

By: Moser, S | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Edmeades, G.O.|Banziger, M.|Mickelson, H.R.|Pena-Valdivia, C.B [eds.] | Feil, B [coaut.] | Stamp, P [coaut.] | Thiraporn, R [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 1997ISBN: 968-6923-93-4.Subject(s): Drought resistance | Drought stress AGROVOC | Nitrogen content | Resistance to injurious factors | South Asia | CIMMYT | Zea mays AGROVOC | Soil fertility AGROVOC | Nitrogen fertilizers AGROVOCDDC classification: 633.153 Summary: An estimated 50% of tropical lowland maize grown in Southeast Asia is reported to suffer substantial grain yield reduction because of drought stress and low soil fertility. Field trials were conducted in the tropical lowlands of Thailand during the dry season to determine the extent to which water stress and nitrogen limit maize growth and yield. Water stress was established during the vegetative period in combination with three nitrogen fertilization levels. Two hybrids (KTX2602, DK888) and two OPVs (Suwan1, La Posta Sequia) were grown; DK888 and La Posta Sequia were assumed to be relatively drought tolerant. Morpho-physiological traits (including leaf rolling and anthesis-silking interval) were evaluated and biomass accumulation was observed during the vegetative period and at maturity. Shoot and grain were analyzed for nitrogen and mineral element concentrations. Soil water content was measured using time domain reflectrometry (TDR) and tensiometers.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.153 EDM (Browse shelf) 1 Available 1F624179
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An estimated 50% of tropical lowland maize grown in Southeast Asia is reported to suffer substantial grain yield reduction because of drought stress and low soil fertility. Field trials were conducted in the tropical lowlands of Thailand during the dry season to determine the extent to which water stress and nitrogen limit maize growth and yield. Water stress was established during the vegetative period in combination with three nitrogen fertilization levels. Two hybrids (KTX2602, DK888) and two OPVs (Suwan1, La Posta Sequia) were grown; DK888 and La Posta Sequia were assumed to be relatively drought tolerant. Morpho-physiological traits (including leaf rolling and anthesis-silking interval) were evaluated and biomass accumulation was observed during the vegetative period and at maturity. Shoot and grain were analyzed for nitrogen and mineral element concentrations. Soil water content was measured using time domain reflectrometry (TDR) and tensiometers.

English

9801|AGRIS 9702

Jose Juan Caballero

CIMMYT 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.
Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org