Plant factory Design For Red Spinach (Amaranthus Tricolor L.) Plant Growth Using Artificial Light

Abstract

This study aims to test the structural and functional design of the plant factory and to determine the growth of red spinach (Amaranthus Tricolor L.). This study used an experimental method with the treatment of lamp height distance L1 (20 cm), L2 (40 cm), and L3 (60 cm) on plant response with a sample size of 4 in each treatment every day for 30 days. The parameters observed included uniformity of drops (EU), flow rate, plant height, number of leaves, leaf width, microclimate and soil moisture. In addition, observations of plant responses and microclimate were also carried out in the greenhouse planting room. The results of the (EU) values obtained were very good based on ASAE information, the flow rate values obtained were different, this was caused by the distance of the water source to the irrigation channel being different and causing the flow rate in the 1st row irrigation channel to be slightly slower compared to the 2nd and 3rd row irrigation channels. The response of red spinach plants in the plant factory planting room was superior to the L1 treatment, but the response of plants in the greenhouse was higher. The average temperature per day in the plant factory ranged from 28.57 ° C - 30.97 ° C, the average temperature per day in the greenhouse planting room ranged from 27.07 ℃, the average humidity per day in the plant factory planting room ranged from 78% - 91%, the average humidity per day in the greenhouse planting room ranged from 69% - 91%. The light intensity in the plant factory ranged from 1616.16 lx - 2626.56 lx, the soil moisture value obtained ranged from 44% - 86%. Based on the results of the study, the L1 treatment produced the most optimal growth response of red spinach plants in the plant factory.