Usually i had extracted DNA from soil sample using power soil Qigen kit and got upto 700 ng/ul of DNA.

I do have a soil sample which has pH of 2.3 higlhiy acidic and one with 12.3 which is highly alkaline

i performed same extraction and got DNA only 3-5 ng/ul... that is not suitable for my downstream tests.

Can some one suggested what to do to increase yield of DNA from such sample.

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