fairfolio
Saved Projects

Effect of the Herbicide Dicamba on Green Algae Volvox Barberi Growth Rate

AJAS · 2026 Plant Sciences (inferred)

Zayan Keezhana · New Jersey Academy of Science

Overview

Dicamba is a type of herbicidal auxin meant to mimic Indole-3-acetic-acid (IAA), a naturally occurring plant auxin hormone. Dicamba enters the cells of its target using the Polar Auxin Transport system (PAT) and its PIN-FORMED (PIN) proteins and causes large amounts of extra and abnormal growth that eventually causes the plant to die. IAA has been shown to cause noticeable decreases in algal growth rates at levels above 200 μL of the IAA to different types of green algae in different studies conducted. Thus, it was hypothesized that adding dicamba to the habitat of the green algae Volvox barberi would cause a significant decrease in the growth rate of the algae, directly corresponding to the amount of dicamba added. Different amounts of the chemical were added to algae habitats, and using a hemocytometer counting grid, the Volvox barberi concentrations before and after a period of 4 days were recorded. Then, the percentage of growth was measured After the data were statistically analyzed using 2-tailed t-tests, it was shown that the data did not support the hypothesis, with none of the dicamba amounts causing a significant difference in growth compared to the control. This may have been due to lack of the PAT system and PIN proteins in the Volvox barberi.

Competition history

  • AJAS 2026 Category not listed

Related projects

Closest projects by meaning, across every fair and year in the corpus.

Browse more like this

Source: AAAS Annual Meeting (Confex) / American Junior Academy of Science

Save projects to your library

Sign in with Google to keep track of projects you find interesting, organized into folders. An account also raises your daily allowance for “Has this been done?”, and lets you create a key for the MCP server with a much higher limit than anonymous use. Browsing stays public.

Continue with Google