The Effects of Pollution on the Growth of Peanut Plants

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In the control group, it is shown that, on average, the peanut plants grew up to 1.69 inches and had an average leaf area of 3.166 cm^2.

In the aluminum sulfate investigation, the data calculated shows that plants watered with a pH of 2.5 grew the least in plant height (1.992 in) and leaf area (3.81 cm^2), followed by the plants watered with a pH of 3.5 (2.375 in & 4.67 cm^2). The plants that were given water with a pH of 4.5 grew the most with an average height of 2.81 inches and leaf area of 5.48 cm^2.

For the nitrogen groups, the average height and leaf area are greatest at 75mL (3.69 in & 7.8 cm^2), least at 100mL (2.35 in & 4.49 cm^2), with 50mL at 2.86 inches and 5.83 cm^2.

In the phosphorus investigation, the data states that the average height and leaf area are greatest at 64lb A/6” soil (3.125 in & 6.433 cm^2), least at 8lb A/6” soil (2.125 in & 4.12 cm^2), with 20lb A/6” soil at 2.59 inches and 5.05 cm^2.

Interpretation:

In the aluminum sulfate investigation, it was interesting to see the clear differences in growth, although the pH was altered by one level. The farther away the pH was from 7 (neutral), the less the peanut plants grew. While the plants given water with a pH of 7 only grew to a height of 1.9, Graph 1 still shows that acidic pHs negatively affect peanut plants. This is accurate, because the peanut plants in the aluminum sulfate group began the experiment at a height of 3 inches and the neutral group started as a sprout. The decrease indicates that acid rain, specifically consisting of aluminum sulfate, has a negative effect on the growth of peanut plants. Perhaps this occurs due to the washing away of the plants’ essential nutrients.

The significant difference between the average height and ...

... middle of paper ...

...ca. 28 Apr. 2011. .

Ojima, D.S, T.G.F Kittel, T. Rosswall, and B.H. Walker. "Critical Issues for Understanding Global Change Effects on Terrestrial Ecosystems." JSTOR. Ecological Society of America, Aug. 1991. 3 Aug. 2011. .

Ownby, James D., and Lyndon Dees. "Growth and Mineral Nutrient Status in Peanut and Sorghum in Response to Acid Precipitation and Aluminium." JSTOR. Blackwell Publishing. 28 Apr. 2011. .

"Peanuts | UGA Cooperative Extension." University of Georgia Cooperative Extension. University of Georgia, 2011. 03 Aug. 2011.

Winner, William E. "Mechanistic Analysis of Plant Responses to Air Pollution." JSTOR. Ecological Society of America. 29 Apr. 2011. .

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