Conduct research.To check the pH of the soil.1. put the soil into the hole about half the holes using the plastic spoon scoop clean soil.2. drops of a liquid, 10 to go down until the soil is saturated with a liquid, then add 2 drops of reagent,3. tilt the plastic holes.4. leave 1 minute compare the colour of a liquid, priwen holes with standard colour plates.Analysis and conclusionFrom the research work, the pH of the soil each area by a summary table as follows:
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