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Estimates of yield losses in maize production due to drought in Zimbabwe

By: Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) | Machida, L.
Contributor(s): Edmeades, G.O.|Banziger, M.|Mickelson, H.R.|Pena-Valdivia, C.B [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 1997ISBN: 968-6923-93-4.Subject(s): Climatic factors | Crop losses | Drought stress AGROVOC | Injurious factors | Plant production | Zimbabwe | CIMMYT | Zea mays AGROVOCDDC classification: 633.153 Summary: Maize is the most important food crop in Zimbabwe and is widely grown. Two major sectors of agricultural production are recognized: the large-scale commercial farming sector (LSC) and small-scale communal farming sector or Communal Farmers (CFS). Most LSC maize growers are situated in the high rainfall areas, where average annual rainfall totals 800 mm or more (Natural Region 11), while 91% of CFS maize growers are situated in semi-arid areas with average annual rainfall totals of 800 mm or less (Natural Regions III, IV and V). Rainy seasons dating back to 1970/71 were classified and grouped as either normal or drought seasons. The difference in average maize yields between normal and drought seasons was used to estimate yield loss due to drought in each farming sector. Estimated yield losses were 0.79 t/ha or 68% in the CFS, and 1.69 t/ha or 37% in the LSC. Yield differences between normal and drought seasons were highly significant (P£0.001) in both sectors. Mid-season drought was cited as the common form of drought responsible for substantial yield losses even during normal seasons in both sectors.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 N624179
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Maize is the most important food crop in Zimbabwe and is widely grown. Two major sectors of agricultural production are recognized: the large-scale commercial farming sector (LSC) and small-scale communal farming sector or Communal Farmers (CFS). Most LSC maize growers are situated in the high rainfall areas, where average annual rainfall totals 800 mm or more (Natural Region 11), while 91% of CFS maize growers are situated in semi-arid areas with average annual rainfall totals of 800 mm or less (Natural Regions III, IV and V). Rainy seasons dating back to 1970/71 were classified and grouped as either normal or drought seasons. The difference in average maize yields between normal and drought seasons was used to estimate yield loss due to drought in each farming sector. Estimated yield losses were 0.79 t/ha or 68% in the CFS, and 1.69 t/ha or 37% in the LSC. Yield differences between normal and drought seasons were highly significant (P£0.001) in both sectors. Mid-season drought was cited as the common form of drought responsible for substantial yield losses even during normal seasons in both sectors.

Global Maize Program

English

9801|AGRIS 9702

Jose Juan Caballero

INT3439

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