Macrophomina phaseolina infection and charcoal rot development in sunflower under field condition

Ahmad I., . and Burney K., . (1990) Macrophomina phaseolina infection and charcoal rot development in sunflower under field condition. [Proceedings Paper]

The infection process and symptom expression of charcoal rot have been investigated both in spring and summer sunflower under rainfed conditions. These studies revealed that infection of sunflowers roots by Macrophomina phaseolina started to take place very early during the seedling stage both in spring and summer. In spring this happened inspite of prevalence of environmental conditions considered unfavourable for infection low air and soil temperatures and high moisture compared to summer when conditions were most favourable. However time 50 percent infection was much shorter in summer than in spring. Disease symptoms were expressed only during crop maturity both in spring and summer. Flower removal resulted in the non-expression of symptoms even though 100 percent plants were infected and favourable conditions prevailed for disease development

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Abstract

The infection process and symptom expression of charcoal rot have been investigated both in spring and summer sunflower under rainfed conditions. These studies revealed that infection of sunflowers roots by Macrophomina phaseolina started to take place very early during the seedling stage both in spring and summer. In spring this happened inspite of prevalence of environmental conditions considered unfavourable for infection low air and soil temperatures and high moisture compared to summer when conditions were most favourable. However time 50 percent infection was much shorter in summer than in spring. Disease symptoms were expressed only during crop maturity both in spring and summer. Flower removal resulted in the non-expression of symptoms even though 100 percent plants were infected and favourable conditions prevailed for disease development

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Item Type:	Proceedings Paper
Additional Information:	3 ills. 6 refs.; Summary En
AGROVOC Term:	HELIANTHUS ANNUUS
AGROVOC Term:	MACROPHOMINA PHASEOLINA
AGROVOC Term:	ENFERMEDADES DE LAS PLANTAS
AGROVOC Term:	INFECCION
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:26
URI:	http://webagris.upm.edu.my/id/eprint/15001

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