soil practicals

soil moisture content

weigh sample and dry in oven

100 degrees for 24 hours

repeat steps until no change in mass

wet- dry / wet x100

soil organic matter content

dry soil in crucible

weight it

heat vigorously over bunsen burner

re weigh crucible

repeat heating cooling and reweighing until no change in mass

dry-burnt / dry x100

soil ph

dry soil in test tube

barium sulphate

universal indicator

de ionised water

shake vigorously

settle

ph colour chart

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