Method for Studying the Process of Growing Onions (Allium Cepa L.) Under Controlled Microclimate: A Review

The purpose of the analytical review is: to identify weaknesses in the methodology for studying onion (Allium cepa L.), to determine the modes of controlled microclimate and the parameters of the light regime in terms of spectrum, intensity and photoperiod. Onion (Allium cepa L.) is a complex object for experimental research. Onions have the properties of a functional product, but require a special approach to the choice of growing technology and the selection of microclimate parameters. In this literature review, we have focused on studies that provide insight into promising directions for further research into the process of growing green onions in a controlled microclimate: the choice of the ratio of the spectra of red, blue, green and white in LED lighting; selection of the optimal photoperiod; choice of method and parameters of dynamic lighting.