How the Amount of
Fertilizer Pellets, in the
Soil, Effects the Growth of
Wisconsin Fast Plants
By:
John Hoffman, Andrew Hendrix,
Thomas Finley, and Borya Hahl
How the Experiment was
Conducted
Planted Wisconsin Fast Plant seeds in
each cell
 Used 0, 4, 8, or 16 fertilizer pellets in
each cell
 Recorded how much the plants grew over
a period of 30 days
 Pollinated the flowers on the plants
 Removed and counted all the seeds and
pods

Controlled Variables
#1- the amount of light (24 hours a
day)
 #2- type of water (tap)
 #3- type of fertilizer pellets
(Carolina n-p-k)
 #4- intensity of light (40 watt)
 #5- type of seed (Brassica Rapa)

Day 0-13 to day
13 the control
group plants
grew about 54
mm.
Wisconsin Fast Plants
200.0
Day 13-15 they
grew about 19
mm
Day 21-24 the
plants grew
about 9 mm.
Day 24-28 grew
about 23 mm.
160.0
Day 24
Day 21
140.0
Height of Plants (mm)
Day 15-21 they
grew exactly 78
mm.
Day 28
180.0
120.0
100.0
Controled Group
80.0
Day 15
60.0
Day 13
40.0
20.0
0.0
Day 13
Day 15
Day 21
Age Of Plants (Days)
Day 24
Day 28
Wisconsin Fast Plants
Day 0-13 to day
13 grew a small
amount.
300.00
Day 13-15 they
grew a little.
Day 21-24 they
slowed in
growth.
Day 24-28 for
cell 1 and 4 he
growth almost
stopped, but
cell 2 and 3
grew a little
faster.
200.00
Height of Plants (mm)
Day 15-21 they
grew the most
in there lifespan.
250.00
cell1
cell2
150.00
cell3
cell4
100.00
50.00
0.00
Day 13
Day 15
Day 21
Age of Plants (Days)
Day 24
Day 28
Number of Pods on Wisconsin Fast Plants
Experimental
cell one had 10
pods, cell two
had 18, cell
three had 2, and
four had zero.
18
18
16
14
Number of Pods
On average the
Controlled
group had all
between 6 and
5 pods, but the
plant in cell 2
died.
20
12
10
Controled Group
10
Exparamental Group
8
6
6
5
5
4
2
2
0
0
0
1
2
3
Cell Number
4
Number of Seeds in Wisconsin Fast Plants
140
131
120
101
100
Number of Seeds
The
Controlled
Group had
101 seeds
and the
Experiment
al group
had 131
seeds.
80
Control Group
Exparamental Group
60
40
20
0
1
Group (Experimental and Controlled)
Sources of Error







Snow days, Christmas break, etc... (low
temperatures).
The two group of lights looked different.
Pollinating plants wrong.
Other groups Touching them.
Handling the plants too roughly.
Watering plants differently.
Not enough plants to make accurate
conclusions.
Conclusions
The plant with 8 fertilizer
pellets grew the most
 for some reason some of the
plants “split” into two
different stalks
 too many fertilizer pellets
was our main assumption of
why one of our plants died

Recommendations to Improve
Experiment
Try to make sure that the lights aren’t
different
 Find a way, to some effect, keep the
temperature the close to being same
 Buy a portable heater for the room
 observe the groups to see if they work
well together
