Magnesium 

Magnesium atoms are incorporated in chlorophyll molecule in all green plants, without it photosynthesis will not occur. Magnesium stimulates the uptake of phosphorus and help in starch translocation. It is also essential in the formation of fats and oils in plants. Deficiency could be easily rectified by the application of pulverized limestone or other artificial fertilizers.

Procedure for test 

1. Use a pipet, transfer 10 drops of soil extract into a Spot Plate.
2. Add one drop of Magnesium Test Solution #1 and stir. A pale yellow color developed.
3. Add drop-wise, Manganese-Magnesium Test Solution #2 until the pale yellow color change to a darker shade. Compare color developed to Magnesium Color Chart.

Soil sample by river edge