Influence of grape genotype, plant growth stage, and geographic location on Pierce's Disease - Don Hopkins - Pierce's Disease Conference 2008
1. Biological control of Pierce’s disease: Influence of grape genotype, plant growth stage, and geographic location D. L. Hopkins Mid-Florida REC University of Florida Phil Brannen Plant Pathology Dept. University of Georgia
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3. Current tests on new grape plantings of various grape genotypes Field injections
9. Effect of EB92-1 on development of PD in mature ‘Mourvedre’ grapevines in North Georgia vineyard with a high incidence of PD
10. Effect of EB92-1 on survival of symptomatic, mature ‘Mourvedre’ grapevines in North Georgia vineyard 29 36 10 6
11. Effect of EB92-1 on development of PD in mature ‘Mourvedre’ grapevines in North Georgia vineyard with a low incidence of PD
12. Effect of EB92-1 on survival of symptomatic, mature ‘Mourvedre’ grapevines in a North Georgia vineyard 3 4 (2)
13. Planned Mature Plant Study for 2009 Inject EB92-1 into the main trunk of the vines to get more systemic affect
14. North Georgia Central Florida North Carolina South Carolina Different Locations (Climates)
15. Effect of EB92-1 on development of PD in new plantings in Florida (4 years - Cabernet Franc, Chardonnay, Chenin Blanc, Golden Muscat, Ruby Cabernet), Georgia (1 year – Cabernet Sauvignon, Cab. Franc, Vidal Blanc), S. Carolina (1 year – Neptune)
16. Comparison of treatment method with EB92-1 on control of Pierce’s disease in rooted cuttings in the greenhouse. b b a b a a EB92-1 Treatment Methodology
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18. 10 5 PD92-9 cells Colonization of host plant by EB92-1 and pathogen (PD92-9 10 5 PD92-9 cells