SUPPLEMENT LED LIGHT SPECTRUM ON GROWTH AND YIELD OF INDOOR VEGETABLES PRODUCTION

An experiment was conducted at the Horticulture Innovation Lab., Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during October 2018 to March 2019 to evaluate the potentiality of LED light spectrumfor enhancing the indoor vegetables production. Vegetables like tomato and brinjal were used and consisted of two parts and conducted with four led light spectrum treatments viz. T₀ (White), T₁ (White+Blue), T₂ (White+Red), T₃ (White+Blue+Red) were used in this experiment following split plot design with three replications. Data on different growth and yield attributes parameters were taken in this experiment. All the studied parameters were greatly influenced by different LED light spectrum. Among them, combination of white, red and blue LED light spectrum (T₃) showed better result in number of leaves, SPAD value, number of branch, number of flower, number of fruit, fruit length, fruit weight, yield per plant while plant height recorded the highest in T₁ (White+Blue) treatment.