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The Effect of Amount of Fertilizer on the Growth of Plants a

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Haley Diment

on 11 June 2014

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Transcript of The Effect of Amount of Fertilizer on the Growth of Plants a

The Effect of Amount of Fertilizer on the Growth of Brassica Rapa Plants and their Roots in Centimeters, and the Amount of Leaves, Flowers, Flower Buds, Seed Pods, and Seeds Produced
Data Summary
Height (cm): Control (14.5 cm)
3 (16.5)
6 (0) 9 (15.5)
Root Length: Control (5.5 cm) 3(5 cm) 6 (0)
9 (6cm)
Leaf Number: Control (4) 3 (6) 6 (0)
9 (8)
Flower Bud Number: Control (5) 3 (10) 6 (0)
9 (12)
Amount of Flowers: Control (0) 3 (3) 6 (0)
9 (5)
Amount of Seed Pods: Control (2)
3 (5)
6 (0) 9 (3)
Amount of Seeds: Control (36)
3 (59)
6 (0) 9 (8)
Research Question
What is the effect of the number of fertilizer tablets on plant and root growth in centimeters, number of leaves, flowers, flower buds, seeds, and seed pods produced?
Hypothesis
If the fertilizer tablet number
increases
then the growth of the plant and roots, amount of seeds, seed pods, leaves, flower buds, and flowers will
increase
because more fertilizer will offer more nutrients for the plant. However, when there are more than 6 tablets, plant growth (leaves, flowers, seeds, and roots) will remain the same or decrease because the plant cannot absorb all the excess nutrients.
Procedure
1. First, obtain one planter with four different chambers
2 Drop one wick into each chamber so the pointed tip extends below the hole in the bottom of each plant chamber
3. Fill each chamber halfway full with potting mix
4. Next, add the fertilizer. Add none to one chamber, 3 to one chamber, 6 to one chamber, and 9 to the other.
5. Lastly, add more potting soil mix until it reached the top of the planter and add three seeds to each chamber and push into soil about 4mm deep
6. While measuring plant height, extend the plant up and measure from top of dirt to top of plant in (cm)


Conclusion
Our hypothesis that if we increase the amount of fertilizer, the growth of plants and their roots in centimeters, leaves, flower buds, flowers, seedpods, and seeds will also increase was somewhat supported,

Height (cm): Control (14.5 cm)
3 (16.5)
6 (0) 9 (15.5)
Root Length: Control (5.5 cm) 3(5 cm) 6 (0)
9 (6cm)
Leaf Number: Control (4) 3 (6) 6 (0)
9 (8)
Flower Bud Number: Control (5) 3 (10) 6 (0)
9 (12)
Amount of Flowers: Control (0) 3 (3) 6 (0)
9 (5)
Amount of Seed Pods: Control (2)
3 (5)
6 (0) 9 (3)
Amount of Seeds: Control (36)
3 (59)
6 (0) 9 (8)

As this data shows, the plant with 3 fertilizer tablets was the tallest of all four plants, and had the most amount of seeds and seed pods. The plant with 9 fertilizer tablets had the longest roots, and most amount of leaves, flowers, and flower buds. From this data we can conclude that either 3 tablets or 9 tablets of fertilizer provide to most growth benefits for the plant.
Explanation

Plants absorb water from the soil into the roots through a process called
osmosis
. This process will require the salt content inside the roots to be higher than the salt content of the soil. As a result, the water molecules will migrate from the soil into the roots in order to balance the salt level in the soil and in the roots.

Using
too much fertilizer will increase the salt content of the soil
. If the salt content of the soil becomes higher than the salt content of the roots, the water molecules will migrate out of the root into the soil causing root burn. This will cause the plant to grow more slowly, become dehydrated and eventually die. Too
little fertilizer will cause the plants not being able to grow
at the optimal speed due to the lack of nutrients in the soil. Plants use large amounts of potassium, nitrogen, and phosphorus for their growth and survival. Without the proper amount of these nutrients the plant will not thrive and grow to its best ability. However, with too much of these nutrients, found in the fertilizer, the plant is not able to absorb the excess nutrients. In some cases, the plant will die due to excess nutrients.

April 16, 2014
April 19, 2014
April 21, 2014
April 23, 2014
April 28, 2014
April 30, 2014
May 2, 2014
May 6, 2014
May 9, 2014
May 13, 2014
May 16, 2014
May 18, 2014
May 20, 2013
By: Kate Hampson & Haley Diment
Why did our plant with 6 Tablets not grow?
Genetics
Too much/too little water
Pests
Soil Quality
Full transcript