JOEL MARTINEZ
How to grow a sweet potato in the
winter faster
!
The purpose of my
experiment was to find
out if sweet potatoes can
grow faster with dirt or
without
dirt.
I
hypothesized that if I use
dirt to grow a sweet
potato it will grow faster
than just water because
dirt has nutrients.
!
To c o n d u c t m y
experiment I needed the
following material: pot of
dirt, shoebox, two sweet
potatoes, cup of water.
!
Once I had my
materials, I followed this
procedure:
1. Get the shoe box cut
one of its ends and
make it two by two
inches.
2. have a small cup of
water and put toothpicks
around the potato so it
takes a little bit of water
each day.
3. Put the other potato in
the pot and water it.
4. Now compare them to
see which one grow
faster.
!
The independent
variable was a sweet
potato. The dependent
variable was dirt, and
light. The controlled
variable was pot of dirt.
!
In the end, my
results were good. My
hypothesis was not
supported because the
potato in the dirt did not
grew better than the
potato just in water.
I learned that even
though you put a potato
with dirt it wonʼt grow
much. But in water it
grew a lot because the
roots go though the
water and have more
space.