Compatibility and infectivity of a Cercospora rodmanii formulation with enhancing agents. Final report
A formulation of the fungus Cercospora rodmanii Conway has been produced, as a biocontrol of waterhyacinth (Eichhornia crassipes (Mart.) Solms.). To ensure the most efficient germination of the formulation, 12 potential enhancing agents were tested for addition during the spray application. The agents were aspartic acid, glucose, glutamic acid, gum xanthan, nutrient agar, Ortho X-77 Spreader, Tween 20, Tween 60, Tween 80, sodium alginate, Super Slupper, and yeast extract. Compatibility of test agents and combinations of test agents with two lots of the formulation was determined in the laboratory. All combinations of test agents were compatible with both lots of the C. rodmanii formulation. The C. rodmanii formulation was sprayed with test agents on waterhyacinth pseudolaminae. Damage was monitored each week for 8 weeks by assigning a disease index to each original and new pseudolaminae. No spots having characteristics suggestive of C. rodmanii infection were observed at any time during the study. Lack of infectivity could be remedied by isolating a virulent strain of C. rodmanii from the field. Agents determined to be compatible in this study could then be reexamined for enhancing infectivity on a virulent C. rodmanii formulation. 14 references, 2 figures, 5 tables.
- Research Organization:
- Army Engineer Waterways Experiment Station, Vicksburg, MS (USA). Environmental Lab.
- OSTI ID:
- 6540454
- Report Number(s):
- NP-4901953; ON: TI84901953
- Resource Relation:
- Other Information: Miscellaneous Paper A-83-6
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nitrogen transformations in a waterhyacinth-based water treatment system. [Eichornia crassipes (Mart. ) Solms]
Pentachlorophenol: Uptake/elimination kinetics and metabolism in an aquatic plant, Eichhornia crassipes