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The acidic, alkaline and neutral nature of the soil is determined by the pH value of the soil.
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Its decrease or increase directly affects the growth of crops.
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In areas where there is a problem of pH value, suitable varieties of the crop are sown which can tolerate acidity and alkalinity.
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The optimum pH value of the soil is considered to be between 6.5 to 7.5 because the soil with this pH value absorbs the nutrients in greater quantities by the plants.
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If the pH value is less than 6.5, the soil is acidic, if it is more than 7.5 the soil is alkaline and when it is 7 it is neutral in nature.
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The pH value of the soil can be found by using a pH meter or litmus paper.
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It is recommended to apply lime for acidic soil and gypsum for alkaline soil.
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