-         Light is one of the most important environmental factors affecting plant growth. Light quality is a limiting factor in the growth of the plant. Chemical reactions and physiological reactions are controlled by the color of light. 

-         The Agriscience student would select plants of the same species and alter the light color for those plants.  Any potted plant would be acceptable for conducting this experiment.

-         Visible light consists of different colors having wavelengths of different ranges. Each wavelength of light causes chemical and thermal responses in plants that influence various phases of  growth.

-         Plants should be exposed to a diversity of light colors. Examples include natural light, incandescent light, white flourescent light, and blue flourescent light.

-         To determine affects of the light on growth factors several observations should be made; length of internodes, leaf width and length, quantity and quality of flower production and quantity of leaves should be considered. Plant quality should also be a consideration. This would include strength of stems, color of the leaves and flowers, tissue damage and plant survival.

-         Plant growth textbooks

-         Internet

-         Agriculture Research Service