Effect of some Soil Amendments on Damping-Off and Charcoal-Rot as well as on Sunflower Growth Characteristics and Yield | ||
| Egyptian Journal of Phytopathology | ||
| Article 2, Volume 40, Issue 2, December 2012, Pages 27-38 PDF (282.56 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejp.2012.102784 | ||
| Author | ||
| Saber Morsy* | ||
| Plant Pathol. Res. Inst. Agric., Res. Centre, Giza, Egypt | ||
| Abstract | ||
| Rhizoctonia solani (Kuhn), Macrophomina phaseolina (Tassi) Ashby, Sclerotium rolfsii (Sacc.) and Fusarium spp. were found to be the most associated fungi with damping-off and charcoal-rot of sunflower plants in Behera Governorate. Rhizoctonia solani was the most pathogenic fungus, causing pre-emergence damping-off on sunflower (cv. Vedok). Meanwhile, M. phaseolina caused less disease incidence 15 days after sowing. In contrast, S. rolfsii was the most pathogenic fungus, causing post-emergence damping-off, 15 to 45 days after sowing. However, M. phaseolina was most effective to cause charcoal-rot , 45 to 90 days after sowing. Soil amendments with sulphur, compost and gypsum, either alone or in combination, recorded the highest reduction of pre-, post-emergence damping-off and charcoal-rot when compared with check (control) treatment in field experiments. Also, results indicated that the soil amendments improved growth characteristics and increased yield as well as oil contents of sunflower. | ||
| Keywords | ||
| Charcoal-rot; compost; damping-off; gypsum; sulphur and sunflower | ||
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