Effects of Different Colors and Intensity of Light on the Growth of Bell Pepper (Capsicum annuum)

Abstract

This study was conducted to determine the agronomic characteristics on the effects of different colors and intensity of light on the growth of Bell Pepper (Capsicum annuum). This study used the experimental method of research using a Complete Randomized Design (CRD). There are two factors in this experiment; Factor A different colors (red, blue, and green) and Factor B intensity of light (5W, 10W, and 15W).  Agronomical characteristics were measured and statistically treated using Factorial Analysis of Variance to determine if different colors, intensity and interaction of light have significant effects on the growth of Bell Pepper plants. The Tukeys procedure was used to determine which of the treatment means produced under varying light colors and intensities are significantly different from one another. The statistical significance of the parameter estimates was declared based on the Bonferroni adjusted level. Based on the analyses of the data gathered, the following conclusions were drawn: Among the light colors tested red has the most significant effect on the growth characteristics of Bell Pepper. Among the intensities of the lights considered, 15W has the most significant effect on the growth characteristics of Bell Pepper. The combination of red color and 15W intensity has the most significant effect on the growth characteristics of Bell Pepper.

As a result of this study, the researcher offers the following recommendations in the belief that they could improve / remedy the existing conditions. When plant is grown on artificial light, the researcher suggests that farmers should use red light at 15W as a source of light aside from bright light, but not green light to prohibit plant growth in terms of height. In growing leafy vegetables blue light at 15W is the best color and intensity of light to enhance leaf diameter. To produce dark green color of leaves, sunlight is still the best light-growing environment of plant. While red light can be an alternative light during rainy season. In achieving a greater number of leaves of plants red light at 15 watts is the most advisable color and intensity of light. In choosing a plant material in the experiment, variety of plant must be considered in order to bear a fruit. Exceed number of hours of exposure of plant to artificial light can be conducted aside from this study. Use of other color and high intensity of light is recommended for future researcher who wants to conduct another study.