Title

The Potential Correlation Between Soil pH and Color Vibrancy of Yellow Chrysanthemum Blooms, Dendranthema Grandiflora

School Name

Heathwood Hall Episcopal School

Grade Level

9th Grade

Presentation Topic

Botany

Presentation Type

Non-Mentored

Oral Presentation Award

2nd Place

Abstract

The purpose of this experiment is to determine whether or not the pH of a soil has an effect on the color vibrancy of select plants growing in that soil. The null hypothesis claims that the soil pH will have no effect on the color vibrancy of yellow chrysanthemums. The hypothesis states that yellow chrysanthemums will experience a color change when grown in soils of different pH. Photographs were taken at specific time intervals, and were then downloaded into Adobe Lightroom and analyzed. The photographs were cropped and set to the white balance using a digital gray card. The computer cursor was placed on the most common or middle shade of yellow, and the amount of red, green, and blue pixels in that specific spot were recorded. This was done for each photograph. Those normalized RGB values were then translated into an HEX number, and the color was produced in Google Docs to generate color swatches. Google Docs uses HEX numbers while Adobe Lightroom uses an RGB scale. Upon producing the average color for each time frame by converting RGB percentages to an HEX scale number, it was concluded that a difference in soil pH does result in a variation of petal shades in yellow chrysanthemum blossoms.

Location

Founders Hall 111 B

Start Date

3-30-2019 10:15 AM

Presentation Format

Oral and Written

Group Project

No

COinS
 
Mar 30th, 10:15 AM

The Potential Correlation Between Soil pH and Color Vibrancy of Yellow Chrysanthemum Blooms, Dendranthema Grandiflora

Founders Hall 111 B

The purpose of this experiment is to determine whether or not the pH of a soil has an effect on the color vibrancy of select plants growing in that soil. The null hypothesis claims that the soil pH will have no effect on the color vibrancy of yellow chrysanthemums. The hypothesis states that yellow chrysanthemums will experience a color change when grown in soils of different pH. Photographs were taken at specific time intervals, and were then downloaded into Adobe Lightroom and analyzed. The photographs were cropped and set to the white balance using a digital gray card. The computer cursor was placed on the most common or middle shade of yellow, and the amount of red, green, and blue pixels in that specific spot were recorded. This was done for each photograph. Those normalized RGB values were then translated into an HEX number, and the color was produced in Google Docs to generate color swatches. Google Docs uses HEX numbers while Adobe Lightroom uses an RGB scale. Upon producing the average color for each time frame by converting RGB percentages to an HEX scale number, it was concluded that a difference in soil pH does result in a variation of petal shades in yellow chrysanthemum blossoms.