By Mike L.
The purpose of this experiment was to determine which of the
following different types of water over a six week period of time,
will be most effective in plant growth: Poland Spring, Evian,
Tap, Rain, and Distilled. The sunflower plant was used as the
only plant in the experiment. The procedure utilized to obtain
the results consisted of various steps. Initially, it was necessary
to collect the different types of water previously mentioned and
store them in a separate measuring container. Next, five sunflower
plants were purchased and planted in separate clay pots in the
same location where equal sunlight and temperature would be provided.
During the experiment, the plant were watered every other day
for 18 days with 100 ml. of different types of water. Measurements
were observed and recorded as to the rate of plant growth.
During the first nine days of the experiment, the Sunflower plants
achieved their greatest and most rapid rate of plant growth irrespective
to the water used. The results indicated a range of 1.6 cm. to
4.7 cm. During the second half of the experiment, the rate of
plant growth was not as rapid. In fact, the range of growth was
between 0.5 cm. and 1.0 cm.
The results of this experiment demonstrated that distilled water
produced the highest growth of 5.5 cm. Next, rain had a growth
of 5.4 cm. Tap water grew to 5.1 cm. Poland Spring had a growth
of 4.9 cm. until it died . Evian produced a growth of 4.8 cm.