I am going to run a new project according to evaluate of biochar application on water erodibility. I want to run the study under rainfall simulator and in plots. I have some challenges here:

1- What rates of biochar you recommend? 

2- kind of application: a) spreading on the surface/ or incorporating within a surface soil such as 5  cm upper soil?

3- Any incubation do you suggest? like wetting and drying?

thanks in advance for your responses

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