The Effects of Glyphosate Versus Spinosad on the Nitrate Concentration in the Soil
School Name
Spring Valley High School
Grade Level
10th Grade
Presentation Topic
Environmental Science
Presentation Type
Non-Mentored
Abstract
Glyphosate is the most common chemical herbicide used in the United States. However, chemical pesticides can prevent the growth of the nitrogen-fixing rendering the soil of its capability to grow plants efficiently. This study aimed to find a possible alternative for chemical pesticides. It was hypothesized that glyphosate would cause the largest decrease in the nitrate concentrations. The two types of pesticides used were glyphosate and spinosad. 5 mL of the glyphosate and the spinosad were applied to the assigned soil samples. The control was given 5 mL water. This took place every other day for 5 days. The nitrate concentrations were evaluated on the seventh day of the experiment. The glyphosate did cause the largest decrease in the nitrate concentration with a mean concentration of 2.714 ppm, spinosad having a mean concentrations of 3.857 ppm, and the control with a mean concentration of 9.524 ppm. An ANOVA (F (5,120) = 238.89, p < 0.001< α =0.05) showed that there was a significant difference between the before and after for the glyphosate and the spinosad and there was a statistically difference between the after data for the control, glyphosate, and spinosad. These results indicate that an organic pesticides (spinosad) could be a plausible alternative for chemical pesticides (glyphosate).
Recommended Citation
Widener, Mikaila, "The Effects of Glyphosate Versus Spinosad on the Nitrate Concentration in the Soil" (2017). South Carolina Junior Academy of Science. 143.
https://scholarexchange.furman.edu/scjas/2017/all/143
Location
Wall 206
Start Date
3-25-2017 2:15 PM
Presentation Format
Oral and Written
Group Project
No
The Effects of Glyphosate Versus Spinosad on the Nitrate Concentration in the Soil
Wall 206
Glyphosate is the most common chemical herbicide used in the United States. However, chemical pesticides can prevent the growth of the nitrogen-fixing rendering the soil of its capability to grow plants efficiently. This study aimed to find a possible alternative for chemical pesticides. It was hypothesized that glyphosate would cause the largest decrease in the nitrate concentrations. The two types of pesticides used were glyphosate and spinosad. 5 mL of the glyphosate and the spinosad were applied to the assigned soil samples. The control was given 5 mL water. This took place every other day for 5 days. The nitrate concentrations were evaluated on the seventh day of the experiment. The glyphosate did cause the largest decrease in the nitrate concentration with a mean concentration of 2.714 ppm, spinosad having a mean concentrations of 3.857 ppm, and the control with a mean concentration of 9.524 ppm. An ANOVA (F (5,120) = 238.89, p < 0.001< α =0.05) showed that there was a significant difference between the before and after for the glyphosate and the spinosad and there was a statistically difference between the after data for the control, glyphosate, and spinosad. These results indicate that an organic pesticides (spinosad) could be a plausible alternative for chemical pesticides (glyphosate).
