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Figure 1: Soil pH
Figure 1 Legend:
Figure 1 Legend:
The graph to the right compares the average pH of soil with pesticide and without pesticide. To obtain these results, we used two different samples of soil, one with pesticide and one without pesticide. For the experiment, we used a pH meter to test the pH of both soil samples. The graph above shows the average pH value of every group’s pH data for pesticide and without pesticide along with their standard deviations revealed by the vertical lines through each bar. The average pH for the pesticide condition was 7.87 whereas the average pH for the no pesticide condition was 7.83. The standard deviation for the pesticide condition is .26, and the standard deviation for the no pesticide condition is .32. The statistics test we used was a unpaired t-test assuming unequal variance and the p-value for the data was .79. The * indicates that the graph is statistically insignificant.
Figure 1 Method:
To measure the pH of the soil, we diluted 3 grams of each soil sample in water and vortexed the solution. The solution was then measured with a pH probe to determine the pH.
Figure 1 Evidence:
Figure 1 Evidence:
There were slight differences in the pH between the pesticide and no pesticide conditions. The difference in pH between the two conditions was 0.04. The soil with pesticide had .508% higher pH than the soil without pesticide. The p value for the data is .79, which is greater than the .05 threshold and therefore reveals that there is no statistical significance between soil with or without pesticide.
Figure 1 Conclusion:
Figure 1 Conclusion:
The data of the pH differences in soil with and soil without pesticides does not support any claim that pesticides make a significant difference in the pH of the soil. There is only a very slight difference in average pH as soil with pesticide had only a half of a percent more pH than soil without pesticides. The p value is .79, which is much higher than the threshold of .05 to prove the data has no statistical significance.
Figure 1 Explanation:
Figure 1 Explanation:
Since there is no statistical significance between the pH of soil with or without pesticide, it reveals that this pesticide does not have a significant impact on the pH for these soil samples and could lead us to exploring other ways pesticide could affect the soil as our overarching goal is to figure out if there is a difference in the microbe diversity of soil with our without pesticide. Possible reasons why pesticide does not change pH significantly is that most pesticides do not contribute large amounts of acidic or alkaline ions to the soil (Admin 2017)). Soil also naturally contains minerals and organic matter that can act as buffers, which would resist large changes in pH by absorbing or releasing ions as needed (Admin 2017). Since there was no statistical significance between the pH of soil with or without pesticide, we know to run more tests in order to see how or even if pesticide will change the microbe diversity in soil and how we can help the plants reach their healthiest lives.
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