how will you find out whether the soil is fertile or not using an acid-base indicator ?
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Take a few grams of soil and mix it with little amount of water to form solution. ... Put the PH paper in the solution and observe. If the PH comes less than 7 then it is acidic or if the PH comes more than 7 then it is basic. By this, if the PH comes more or less than 7 than it is infertile other wise fertile.
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