| 1. Use the pipette to
transfer the clear solution above the
soil to one of the test tubes in the
Soil Test Kit until the tube is filled
to the shoulder. (If more solution is
needed, repeat Part 1). |
|
|
| 2. Add one Nitrate WR
CTA Tablet. Be sure that all the pieces
of the tablet are added to the test
tube and try not to touch the tablet
as you place it into the tube. Cap and
mix until the tablet disintegrates. |
|
|
| 3. Rest the test tube
in a cup or beaker. Wait 5 minutes for
color to develop. (Do not wait longer
than 10 minutes). |
| 4. Compare the pink
color of the solution to the Nitrogen
Color Chart in the Soil Test Kit. Record
your results (High, Medium, Low, or
None) on the Soil Fertility Data Work
Sheet. |
|
|
| 5. Discard the solution
and wash the tube and the pipette with
distilled water. |
| 6. Repeat this procedure
with the liquid from each of the soil
samples. Be sure to rinse the pipette
and tube with distilled water after
they are used. |
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