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Making JHS

Hello, Mr. Cho!!!
I am analyzing the JHS production process and I have some questions...

1 - Can I use water with pH 5.7 and EC 0.04 mS/cm? If I use this water, will my JHS stop working or will its efficiency just be reduced?

2 - My best herb options are oleander, lemongrass, ora-pro-nobis and rosemary. Which is the best option for controlling pests and diseases in your opinion among them?

3 - Here, we will have to use a wood stove to make JHS. In my first test, I used oleander, but due to the high temperature, the JHS did not turn out well. In this case, what is your guidance for making JHS in this situation?

4 - In the book, some herbs need alcohol to obtain the pesticide. How much should be used? Can the same herbs be infused in just water?

Thank you for your attention!!!

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