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The Effects of Fertilizer on Plant Growth and Development

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Emma Sherburne

on 7 September 2014

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Transcript of The Effects of Fertilizer on Plant Growth and Development

The Effects of Fertilizer on
Brassica rapa
Growth and Development

To summarize my data; the plant growing with the organic fertilizer grew the tallest, but was not the healtiest. The plant growing with out fertilizer was healthy even though it grew slowly. The healthiest plant was the plant growing with compost as it's coloration was a nice vibrent green and it produced the most seed pods while keeping healthy leaves and stalk.
Research Question:
How do different types of adding nutrients through fertilizer affect
Brassica rapa
growth over time?
If the
Brassica rapa
plants are treated with different types of fertilizer, then the plant with the most efficient fertilizer (compost) will grow larger and be healthier than the plants using less efficient fertilizer (artificial or dried fertilizer), because the plant will have to expend less energy to get the nutrients it needs and be able to channel more energy into growth and reproduction.

Data Summary
In my experiment, the
Brassica rapa
plant growing with the compost was the healthiest throughout the full experiment and also produced the most seed pods. The compost was the best at providing nutrients to the plant without degrading the soil quality.
Plants require three main nutrients in order to have the healtiest growth and best production; phosphorus, potassium, and nitrogen. By using a fertilizer that includes and balances these, the plant can more easily use them to grow and develop. However, while a fertilizer can provide excelent nutrients quickly, it doesn't add beneficial microbes to enhance soil quality and can overload the soil with nutrients, disrupting the symbiotic relationships within the soil. Compost provides nutrients as well as beneficial microbes, so it is ehancing the soil and providing nutrients.
I tested the effects of diferent types of feritlizer and compost on
Brassica rapa
by growing four seperate plants; each one using a different method of gaining nutrients. I tested no fertilizer, the fertilizer that was availabe for everyone (pellet form), Dr. Earth Organic Fertilizer, and compost from my own home. By measuring plant height, counting leaves and seed pods, comparing color and plant health I was able to see how the extra nutrients affected the plants.

Brassica rapa
Height Over Time
Height (cm)
Type of Fertilizer Used
Full transcript