You can simply use the EC 50 of each fungicide as expressed in terms of concentration, afterwards, determine the % growth rate and compare with the control.

You can go for minimum inhibitory concentration (MIC) test. MIC is the lowest concentration of a chemical which prevents visible growth of a bacterium.

Follow the basic MIC protocol.

Thanks

Md. Faisal Kabir and Manisha Phour for your answers. but i need a method for application

Add the various pesticides to liquid cultures of your biocontraol agent. The evaluate the viability of your cultures after exposure by plating and counting Cfu's (you would do this before treatment too, so that you can determine the effect / death rate if any )

You can go the optimum inhibitory concentration(OIC ) of the chemical which inhibits the growth of the bacterium.

You need to check the viability and growth of your bacillus in the culture media after exposing it to the lowest inhibitory pesticide concentration. I have used the same approach to screening attractants for their compatibility with entomopathogenic fungi. Read this paper to get inspiration: Article African Journal of Biotechnology Screening for attractants c...

Pls. find the attached files

https://ar.scribd.com/doc/208126865/Biosurfactants-in-Agriculture

http://en.cnki.com.cn/Article_en/CJFDTOTAL-AHNY200715081.htm

http://www.just4growers.com/stream/pests-and-diseases/common-fungal-diseases-and-how-to-control-them.aspx

https://patents.google.com/patent/RU2235463C2/en

Hoping this will be helpful to your project, good luck

Best regards

Following the discussion.

This depends on whether you are interested in knowing the effect of these materials in vitro or in vivo. Previous research has demonstrated that the impacts of some compounds in culture may not be the same as the impact on seeds (e.g. https://naldc.nal.usda.gov/download/9456/PDF) on on plants (e.g. http://www.sbreb.org/research/plant/plant97/97p334.htm, Article Efficacy of the biocontrol agents Bacillus subtilis and Ampe...

You can use as a base FRAC method.