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Nitrate leaching by organic and inorganic fertilizers Featured science projectScience project video

Observation

It is observed that the runoff water of the pot using the inorganic fertilizer had the highest levels of nitrate.
 

Day Nitrate content in runoff water using different fertilizers ( mg/liter)
  Cow manure Compost Liquid fertilizer Granule fertilizer
Day 1 50 50 150 100
Day 2 50 50 150 100
Day 3 50 50 150 100

The above results were then plotted onto a graph, as shown below:

nitrate leaching fertilizer science project

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Complexity level:
6
Project cost ($):
30
Time required:
1 day for preparation, 3 days for observation
Material availability:
Easily found. You can obtain most of the materials from a gardening supplies store
Safety concerns:

None