Effect of Lighting on Growth and Productivity of Tomato

The main aim of this work is to study the influence of different colors of LED light (red, blue, red + blue and white) and photosynthetic photon flux (100, 125 and 150 µmol m-2 s-1) on growth and productivity of tomato plants. The obtained results indicated that the shoot length decreases with increasing photosynthetic photon flux, the highest value of shoot length was 259.25 cm was obtained at 100 µmol m-2 s-1 under green light. The stem diameter and leaf area of tomato plants increase with increasing photosynthetic photon flux, the stem diameter and leaf area ranged from 5.86 to 8.13 mm and 99.1 to 151.0 cm2, respectively. The chlorophyll content ranged from 36.40 to 48.52 for all treatment. The shoot dry weight of the tomato plants ranged from 139.1 to 192.8 g for all treatment. The fruits yield of tomato plants ranged from 4611.67 to 5478.04 g per plant for different LED light colors and fluxes under study.