Effectiveness of a 12vdc rgb light for lettuce crop in a controlled Hendrick R. Ignacio... [et. al]

Thesis Bachelor of Science in Electrical Engineering University of Rizal System-Morong. 2018

EXECUTIVE SUMMARY: This study entitled "effectiveness of 12vdc rgb light for lettuce crop in a controlled chamber" is a research project which has a design mainly focusing on introducing the smart farming by means of testing the effectiveness of artificial light in a controlled chamber. The controlled chamber consists of woods and plywood was used for the planting medium of lettuce. Locally available materials were used to build and complete the research. The rgb or red, green and blue lights were installed on the ceiling of the chamber and serve as artificial light for the lettuce crops. Experimental research was used since the study aimed to test the effectiveness of rgb lights on two different heights with 20 lettuce crops each. Experimental research was also applied by the researcher to maintain control over all factors that may affect the result of the study. The researchers used ruler as a measuring tool to measure the width of the lettuce crops. Based on the experimentation and computations made by the researchers in this project, it was presented that the height of artificial light affects the growth of the plants. According to the result presented, the first chamber with the height of 0.3048 meter has an average growth of 25.57 millimeter. The second chamber with the height of 0.6096 meter has an average of 21.64 millimeter. Based on the result, the first chamber is 18.16 percent higher than the second chamber. Based on the cost benefit analysis, the researchers found that the controlled chamber with 12vdc rgb light generated a net profit of php 38,666.60 per year that will expectedly contribute to the annual income of the farmers.