Studying the pH and water holding capacity of different soil samples

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AIM: To study the pH and water holding capacity of different soil samples

REQUIRED: Soil samples, measuring cylinders, funnel, filter paper and pH indicator.

PROCEDURE: Take two funnels and line them with filter paper.

Put these funnels in a measuring cylinder

Put the two soil samples in separate funnels

The weight of soil sample should be same in both (25g)

Pour equal amount of water in both funnels (25ml)

Let the water drip in the cylinder

Note the volume of water collected

Test the two samples with pH indicator and note the observations.

OBSERVATIONS: The volume of water collected in cylinder of sample A was more than sample B

CALCULATIONS: The volume of water retained = Volume of H2O collected in cylinder.

water holding capacity equation

CONCLUSION: Soil sample A is roadside soil and sample B is garden soil at sample B has more water holding capacity.

PRECAUTIONS: Water should be poured slowly

The measuring cylinder should be properly calibrated.

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