Hosheni This report discusses the impact of sand

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Hosheni Lakeraj

BIOL 206- Foundation of Biology: Ecology
and Evolution Lab

Section 103

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Lab Report: Plant Experiment

05 Nov. 2017













and Tritium Aestivum (Wheatgrass): A
Demonstration of the Effect of Sand on Plant Growth 



            This report discusses the impact of
sand on wheatgrass plant development. We hypothesized that the spread of water
will help the plant grow with sand added into the soil mixture for the
experimental wheatgrass plant. Soils containing sand mixtures evenly distributed
are more efficient and effective in producing a better growth environment for
plants versus soils that do not. Studies demonstrates that a sandy soil is a
natural characteristic that is essential to retaining water and supplements for
plants. Therefore, when two similar plants are grown in comparison, a change in
soil will highly influence growth.


            The goal of this experiment is to
observe and analyze whether the addition of sand will increase absorbency, thus
providing better flow into the soil system. The main dependent variable is
growth, development, and health of the plant. Soil type, thusly can adjust a
plant’s impact on soil through consequences for plant production (Hancock,
Bradley, Giardina, & Pregitzer, 2008). Sand is known to have some silt and
organic matter which is best for growing plants. Sandy soil is a poor average
for water storing, therefore, watering plants all the more frequently and at
shorter intervals will go far in keeping the soil saturated (Leineriza, 2011). Overall,
a soil mixture of sand and soil should promote an overall effective growth environment
compared to a soil without sand. Wheatgrass – a typical plant presented to
either a sandy soil or consistent soil will be developed and analyzed.
Therefore, one sample will be wheatgrass grown in only organic soil and the
experimental wheatgrass will be grown in organic soil and sand.

Materials and Methods

A plant pot was utilized to run the
essential theory. Two separate blends, the control and the experiment were set
in the plant pot for investigation. Twenty wheat grass seeds, were planted in
the mixture of half sand and half soil was added to the experimental plant pot,
and the control group which was filled with just soil. The two gatherings were
routinely watered 3 times each week with 1/4 cup of water, and left at a window
sill, accepting a similar level of daylight, with a similar room temperature.
The length of the trial went on for around 2 weeks. Once the analysis was
finished, plants from both the control and the experimental were cut from the
base of the soil, and lengths were measured by utilizing a standard 12-inch
ruler. Scaling of plant lengths was in centimeters. Graphical examinations,
along with a t-test was kept running with a specific end goal to set up an
accord of the experiments success. Furthermore, a null hypothesis will be
conceivable if an expansion of sand neglects to have any effect on development.



            Both plants displayed a decent
amount of growth over the two weeks that the plants were watered. The control
group wheat grass plant had a mean length measured at 22.1 cm, while the experimental
group had a mean length measured at 26.9 cm. When the t-test was conducted, the
p-value was 0.0105. Figure 1 shows the evaluation of the lengths of both the
control and experimental plants under a box and whiskers plot. This means that
our data has a statistically significant difference and there was no difference
between the means of our data. Therefore, the null hypothesis where expansion
of sand has no impact on development, is neglected, as there is a normal plant
length contrast of 4.8 cm between the control and experimental.










1 shows the difference
of growth values between the control group (without sand) and the experimental
group (with sand). A box and whiskers plot was used to show the range of plant
lengths relative to both parties. The figure shows significantly larger plant
lengths from the pot plant including sand versus the pot plant without sand. A
t-test value of 0.0105 shows a significant relationship.


            Our results caused us to reject our
null hypothesis and accepted our hypothesis. The t-test that was revealed showed
that there was a statistical significant difference in our data because the p-value
being 0.0105. The experimental group demonstrates a significant connection
between the expansion of sand on a soil body to the development of a plant,
when contrasted with a plant that did not get any sand and was entirely natural
soil. Soil is a dynamic three-dimensional substance which emphasizes plant
development by giving anchorage, oxygen, water, temperature adjustment and
supplements (Berg Stack 2016). We can say this because when measured the values
of the lengths, it ended up being higher for the experimental plant than it did
for the control group. One question that has left me wondering is what would
have happened if we added more sand to the soil rather than doing an even
distribution of sand and soil for the experimental group, would our plant grow
just the same or would the lengths of plant be taller or would it not grow at
all? In the article, “Soil and Water
Relationships,” it states that permeability refers to the development of
air and water through the soil, which is essential since it influences the
supply of root-zone air, dampness, and supplements accessible for plant uptake.
Therefore, since our plants sat on a window sill, it was exposed to a lot of
air which is most likely the reason why the roots ended up sprouting so tall,
because the plants were getting sufficient nutrients. Due to a huge
relationship in the t-test, the hypothesis that sandy soils create more
proficient development environments than soils without sand is fruitful.

Literature Cited

Ball, J. (n.d.). Soil and Water Relationships. Retrieved
November 06,

2017, from https://www.noble.org/news/publications/ag-news-and-views/2001/september/soil-and-water-relationships/

Berg Stack, Lois. “Soil and Plant Nutrition: A Gardener’s
Perspective.” The University of

Maine, 2011,

Hancock, J. E., Bradley, K. L., Giardina, C. P., &
Pregitzer, K. S. (2008). The influence

of soil type and altered
lignin biosynthesis on the growth and above and belowground biomass allocation
of Populus tremuloides. Plant & Soil, 308(1/2), 239-253.

Leineria. (2011, April 13). Growing and Gardening in Sandy Soil.

Retrieved from November 05,
2017, from http://agverra.com/blog/sandy-soil/


Categories: Nutrition


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