1. The Effect of Natural Fertilizers on the Growth of Sweet Corn
Hope Milo and Maya Sunderraj

2. Harm to the environment
How is this experiment useful in the real world?
Harm to the
environment

7. 1 2 3 4

8. ANOVA
Comparing more than two variables (a.k.a., the means of each group of corn.)
13 cm
34 cm
20 cm

9. Plant
Add Fertilizer & Water
Measure

10. ANOVA Single Factor Results
Between all fertilizer types
SUMMARY
Groups
Count
Sum
Mean
Variance
Ashes 10
381.7
38.2
42.8
Coffee
308.4
30.8
13.3
Pasta Water
365.7
36.6
20.1
Tap Water
342.3
34.2
16.9
ANOVA
Source of Variation SS df MS F
P-value
F crit
Between Groups 3
101.34
4.35
0.01
2.87
Within Groups 36
23.30
Total 39

11. ANOVA Single Factor Results
Between ashes and pasta water

12. ANOVA Single Factor Results
Between coffee grounds and tap water

13. P-Value between all data sets: .01
Data is statistically significant!
Potential Errors:
Some corn seeds sprouted later than others
Corn was not planted at the same time

14. Further Questions
What other natural items could be utilized as fertilizers?
How would these fertilizers work with other types of plants?
Are these fertilizers better than chemical fertilizers?
Would fresh coffee grounds which weren’t used work better than used coffee grounds?

15. Works Cited
Coffee, brewed from grounds, prepared with tap water Nutrition Facts & Calories. (n.d.). Retrieved May 08, 2017, from
Editors, R. D. (2011, May 31). Use Recycled Cooking Water to Feed Your Garden | Reader's Digest. Retrieved May 08, 2017, from
How do plants get their nitrogen from the air? (n.d.). Retrieved May 08, 2017, from
Michael BalterJul. 15, 2013 , 3:00 PM, Scott Waldmann, E&E NewsMay. 6, 2017, 4, 2. J., 3, 2. E., 3, 2. J., 3, 2. M., , 2. A. (2016, February 11). Researchers Discover First Use of Fertilizer. Retrieved May 08, 2017, from
Micronutrients. (n.d.). Retrieved May 08, 2017, from
Nitrogen. (n.d.). Retrieved May 08, 2017, from
Nitrogen Cycle. (n.d.). Retrieved May 08, 2017, from
Patterson, S. (2016, November 27). Understanding The Role Of Magnesium In Plants – How Do Plants Use Magnesium. Retrieved May 08, 2017, from
POTASSIUM IN PLANTS. (n.d.). Retrieved May 08, 2017, from
Rhoades, H. (2016, November 27). NPK Values: What Do The Numbers On Fertilizer Mean. Retrieved May 08, 2017, from
Rhoades, H. (2016, March 03). Coffee Grounds & Gardening: Using Coffee Grounds As Fertilizer. Retrieved May 08, 2017, from
Soils - Part 6: Phosphorus and Potassium in the Soil. (n.d.). Retrieved May 08, 2017, from
WHITE, P. J., & BROADLEY, M. R. (2003, October 01). Calcium in Plants. Retrieved May 08, 2017, from
Why do plants need SULFUR?? (n.d.). Retrieved May 08, 2017, from
Wise, N. (n.d.). The 6 Essential Nutrients for Healthy Plants. Retrieved May 08, 2017, from
Wood ashes can benefit gardens and lawns. (n.d.). Retrieved May 08, 2017, from