This trial was set up to evaluate the efficacy of Bacillus subtilis lipopeptides against Botrytis cinerea stem infections in greenhouse tomatoes in comparison to the chemical reference Scala and the biological reference Prestop.
- Are the results reliable?
- Are Bacillus subtilis lipopeptides effective against Botrytis cinerea on tomato? Does it perform comparable results as Scala or Prestop?
- What about the plant compatibility of Bacillus subtilis lipopeptides in tomato?
The trial was set up in a randomized block design, in 4 parallels and a plot size of 12 plants at a greenhouse in the research centre PCG in Kruishoutem (Belgium) on the variety Admiro (Monsanto) according to the EPPO guidelines.
The planting date was 28/8/2013. Destruction of the crop took place on 4/11/2013.
Preventive treatments were performed on 3/10/2013 (i.e. 1 day before artificial inoculation (DBI)). The applications were performed by means of a handheld sprayer with a spray volume of 800 l/ha vertical. The test product was dissolved in 0.1% DMSO.
On 4/10/2013 an artificial inoculation with Botrytis cinerea R16 was performed following a work instruction. Immediately after the inoculation vents were closed and a fog installation was used to assure high relative humidity.
On 18/10/2013 disease incidence and severity were assessed.
In this trial there was a severe infestation of Botrytis cinerea. Both the chemical and biological reference products, Scala (pyrimethanil) and Prestop (Gliocladium catenulatum) proved to be effective in reducing disease incidence and severity of B. cinerea on tomato stems. No effects were observed for mycosubtilin, fengicin or surfactin individually at a dose of 100mg/l or from combinations of mycosubtilin (50mg/l) with fengicin (50mg/l) or surfactin (50 mg/l).
Efficacy of bacillus subtilis lipopeptides against botrytis cinerea stem infections in tomato 2013
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