Title

The Effect of LED, UV, and Fluorescent Light on Lactuca Sativa in a Hydroponic System

School Name

Heathwood Hall Episcopal School

Grade Level

10th Grade

Presentation Topic

Botany

Presentation Type

Non-Mentored

Oral Presentation Award

2nd Place

Written Paper Award

1st Place

Abstract

Hydroponics has revolutionized the world of agriculture. Its advancement has led to the successful growth of plants without soil. Many studies have compared plants grown hydroponically to plants grown traditionally in soil. This study was conducted to observe the effect of LED, UV, and fluorescent light on the growth rate of Lactuca sativa, compared to a control group grown under natural sunlight. It was hypothesized that plants grown under natural sunlight would have a higher growth rate than plants grown under other lighting. During this experiment, plants were grown in hydroponic systems under respective lighting for 4 weeks. Their height and number of leaves were measured three times a week and both the average height and average number of leaves were tested in single factor ANOVA tests. The statistically significant data was further analyzed in post hoc testing. The results obtained for average height under various lighting groups was not statistically significant in contrast to the data for average number of leaves which was statistically significant. After further analyzation, it was concluded that the plants grown under UV light had a significantly lower number of leaves than the plants in other groups. The null hypothesis that if lettuce is exposed to UV, LED, fluorescent, or sunlight, then there will be no variation between the different lighting groups was rejected.

Location

Founders Hall 111 B

Start Date

3-30-2019 9:15 AM

Presentation Format

Oral and Written

Group Project

No

COinS
 
Mar 30th, 9:15 AM

The Effect of LED, UV, and Fluorescent Light on Lactuca Sativa in a Hydroponic System

Founders Hall 111 B

Hydroponics has revolutionized the world of agriculture. Its advancement has led to the successful growth of plants without soil. Many studies have compared plants grown hydroponically to plants grown traditionally in soil. This study was conducted to observe the effect of LED, UV, and fluorescent light on the growth rate of Lactuca sativa, compared to a control group grown under natural sunlight. It was hypothesized that plants grown under natural sunlight would have a higher growth rate than plants grown under other lighting. During this experiment, plants were grown in hydroponic systems under respective lighting for 4 weeks. Their height and number of leaves were measured three times a week and both the average height and average number of leaves were tested in single factor ANOVA tests. The statistically significant data was further analyzed in post hoc testing. The results obtained for average height under various lighting groups was not statistically significant in contrast to the data for average number of leaves which was statistically significant. After further analyzation, it was concluded that the plants grown under UV light had a significantly lower number of leaves than the plants in other groups. The null hypothesis that if lettuce is exposed to UV, LED, fluorescent, or sunlight, then there will be no variation between the different lighting groups was rejected.