INTEGRATION BETWEEN ZINNIA SEEDS OSMOPRMING WITH PEG SOLUTION AND SOIL TREATMENT WITH COONTAIL AND BIOIMMUNE EXTRACTS TO CONTROL FUSARIUM CULMORUM TRANSMITTED BY SEEDS

I. Saeed, R.; S. Juber, K.

	INTEGRATION BETWEEN ZINNIA SEEDS OSMOPRMING WITH PEG SOLUTION AND SOIL TREATMENT WITH COONTAIL AND BIOIMMUNE EXTRACTS TO CONTROL FUSARIUM CULMORUM TRANSMITTED BY SEEDS
The Iraqi Journal of Agricultural Science
Article 1, Volume 46, Issue 1, 2015, Pages 1-10
Authors
R. I. Saeed; K. S. Juber
Abstract
This study was carried out to evaluate the efficiency of some plant extracts and Beltanol to control the Fusarium culmorum with Zinnia seeds, and test its pathogenicity. Results showed the existence of fungus in 27.2% of seed samples with 7.59% mean frequency. Pathogenicity test by using blotter method showed that all the 5 isolates caused a significant reduction (0.05) in Zinnia seeds germination. Isolate A33 gave the highest decrease in percentage germination (19%). Laboratory result showed that the Bioimmune extract 12% caused the highest growth inhibition of isolate A33 (75.5%) followed by coontail extract 2000 mg/L (59.9%) while lotus Nymphaea nouchali extract did not give any effect. It was found that the Coontail, Bioimmune and Beltanol caused a significant reduction in disease incidence and severity. Beltanol + A33 treatment gave the highest significant decrease in percentage of disease incidence and severity, it was 22.5% and 11% compared with 92.5%and 90% in the control treatment respectively. There were not significant differences in the disease incidence and severity between the two extracts and Beltanol and extracts themselves. The two extracts gave superior significant increase in fresh and dry weight compared with Beltanol treatment. Seed treatment with PEG solution caused a significant reduction in disease incidence, but it was less than reduction in treatments without PEG.
Keywords
Pathogenicity; disease incidence; disease severity; Beltanol

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