Method for cultivating a crop, crop production unit and crop production system

A crop production unit comprising an at least substantially daylight-free, conditioned cultivation environment for receiving and growing a crop therein in a cultivation period, which cultivation environment comprises a dark space with radiating means for generating actinic artificial light with a specific photosynthetically active radiation spectrum and for generating evaporation-regulating radiation, to which radiation spectrum and which evaporation-regulating radiation the crop is at least temporarily exposed, and with climate control means for regulating a number of growth factors, which growth factors comprise at least an ambient room temperature and a relative room humidity, wherein the climate control means and the radiating means are coupled to a control device which is able and configured to receive a cultivation schedule and on the basis thereof to control and set the radiating means and the climate control means during the cultivation period in a mode which imposes a ratio of water and dry matter in the crop determined by the cultivation schedule as well as a composition of inorganic and organic constituents in the dry matter determined by the cultivation schedule, wherein the cultivation schedule comprises prescribed growth parameters for the different growth factors which define the growth factors in a predetermined mutual relation and impose the growth factors on the crop in the mutual relation prescribed by the cultivation schedule.