Knowledge Center Catalog

Significance and control of fusarium ear blight in winter wheat

By: Contributor(s): Material type: TextTextPublication details: Mexico, DF (Mexico) CIMMYT : 1997ISBN:
  • 968-6923-94-2
Subject(s): DDC classification:
  • 632.4 DUB
Summary: In Fusarium culmorum-inoculated field trials, a significant regression relationship was found between incidence and severity of fusarium ear blight (FEB), and between % infected spikelets and 1000 grain weight of wheat. In cv. Avalon, an estimated 0.5 t ha-l would be lost for every 10% increase in the disease. In glasshouse trials, the most effective fungicidal control of F. culmorum infection of wheat ears was demonstrated by tebuconazole and prochloraz, applied 7 days prior to inoculation. The variable retention of a sodium fluoroscein tracer was demonstrated on the ears of a range of wheat cultivars, and scanning electron microscope studies showed massive internal colonization of protected surfaces prior to the appearance of visible symptoms. These factors may help to explain variability in fungicide performance. A link between height and FEB resistance in wheat cultivars was demonstrated.
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Item type Current library Collection Call number Copy number Status Date due Barcode Item holds
Conference proceedings CIMMYT Knowledge Center: John Woolston Library CIMMYT Publications Collection 632.4 DUB (Browse shelf(Opens below)) 1 Available R624324
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In Fusarium culmorum-inoculated field trials, a significant regression relationship was found between incidence and severity of fusarium ear blight (FEB), and between % infected spikelets and 1000 grain weight of wheat. In cv. Avalon, an estimated 0.5 t ha-l would be lost for every 10% increase in the disease. In glasshouse trials, the most effective fungicidal control of F. culmorum infection of wheat ears was demonstrated by tebuconazole and prochloraz, applied 7 days prior to inoculation. The variable retention of a sodium fluoroscein tracer was demonstrated on the ears of a range of wheat cultivars, and scanning electron microscope studies showed massive internal colonization of protected surfaces prior to the appearance of visible symptoms. These factors may help to explain variability in fungicide performance. A link between height and FEB resistance in wheat cultivars was demonstrated.

English

9806|AGRIS 9802

Jose Juan Caballero

CIMMYT Publications Collection


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