Title

The Effect of Hydroponic Growing Techniques on the Amount of Vitamin C produced in Brassica rapa nipponosica

School Name

Heathwood Hall Episcopal School

Grade Level

9th Grade

Presentation Topic

Botany

Presentation Type

Non-Mentored

Oral Presentation Award

2nd Place

Abstract

Hydroponics is a relatively new technology, evolving rapidly since its inception 70 years ago. Hydroponics is the process of growing plants without soil but with added nutrients. The purpose of this experiment was to investigate the effect of growing techniques on the amount of vitamin C produced Brassica rapa nipponosica (mizuna lettuce). This study was conducted by assembling an NFT hydroponic system and growing twenty­eight Brassica rapa nipponosica plants using two techniques: hydroponics and soil grown. Once the system was built, sixty mizuna plants were grown and tested for vitamin C levels. The hydroponic mizuna received nutrients in two parts, A and B, while the soil grown mizuna received only water and the bagged soil. The mean for the amount of vitamin C produced in the hydroponically grown plants was 0.0321 mg. The mean for the amount of vitamin C produced in the conventionally (soil) grown plants is 0.0082. The null hypothesis is able to be rejected because the t stat, 4.9478, is bigger than the t­critical one tail 1.6736 and the t­critical two tail 2.0049. The results were obtained by using a T­ test (two­ sample assuming equal variances) and indicate that the hydroponic growing technique helped to increase the amount of vitamin C found in the mizuna lettuce. Aside from nutrient levels, the hydroponically grown mizuna had a much greater mean height; 8.6 cm. as compared to the soil grown mizuna having a 5.8 cm average height.

Start Date

4-11-2015 11:30 AM

End Date

4-11-2015 11:45 AM

COinS
 
Apr 11th, 11:30 AM Apr 11th, 11:45 AM

The Effect of Hydroponic Growing Techniques on the Amount of Vitamin C produced in Brassica rapa nipponosica

Hydroponics is a relatively new technology, evolving rapidly since its inception 70 years ago. Hydroponics is the process of growing plants without soil but with added nutrients. The purpose of this experiment was to investigate the effect of growing techniques on the amount of vitamin C produced Brassica rapa nipponosica (mizuna lettuce). This study was conducted by assembling an NFT hydroponic system and growing twenty­eight Brassica rapa nipponosica plants using two techniques: hydroponics and soil grown. Once the system was built, sixty mizuna plants were grown and tested for vitamin C levels. The hydroponic mizuna received nutrients in two parts, A and B, while the soil grown mizuna received only water and the bagged soil. The mean for the amount of vitamin C produced in the hydroponically grown plants was 0.0321 mg. The mean for the amount of vitamin C produced in the conventionally (soil) grown plants is 0.0082. The null hypothesis is able to be rejected because the t stat, 4.9478, is bigger than the t­critical one tail 1.6736 and the t­critical two tail 2.0049. The results were obtained by using a T­ test (two­ sample assuming equal variances) and indicate that the hydroponic growing technique helped to increase the amount of vitamin C found in the mizuna lettuce. Aside from nutrient levels, the hydroponically grown mizuna had a much greater mean height; 8.6 cm. as compared to the soil grown mizuna having a 5.8 cm average height.