Abstract
Artificial irradiation in protected ground structures is used for growing seedlings and for plant breeding purpos-es. Despite increased prime cost of seedlings, additional illumination is efficient since it increases the yield by 20-30% and accelerates the production by 10-15 days. In this development, plant growth promotion through illumination is achieved by creating an optimal spectrum and regulating the illumination depending on the actual natural illumina-tion, automatic spectrum control for various plants and the irrigation system. In terms of importance, the lighting meth-od may eventually take the leading positions as it is char-acterized by high efficiency. The effectiveness of the de-velopment is to improve the useful properties of plants and reduce plant management costs. The disadvantage of this installation is the need for high labor costs due to growing plants without taking into account the objective needs for timely irrigation with foliar spray with nutrient solution or timely supply of nutrient solution directly into the ground in the area of the root system depending on the soil moisture. In addition, the method does not provide for the cultivation of tomato seedlings in the presence of objective control of insufficient illumination in the winter period which requires additional illumination for the required period of time with certain duration for the efficiency of the process. The scien-tific novelty is the reduction of maturation time and increas-ing the yields of leaf vegetable crops and seedlings based on innovative effects that take into account the peculiarities of the developing root system. According to the above, it is necessary to note the unresolved issues in technological operations related to the additional illumination of plants and their watering. Thus, the topic of developing an instal-lation for selecting the spectral composition during irradia-tion and irrigation in order to intensify the vital activity of plants is undoubtedly relevant.
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