Disclosed are: a lighting environment control facility capable of controlling light to be irradiated on cultivated crops to an optimum condition for the growth of the crops, thereby activating a natural defense of the crops against pests； a pest control method capable of determining whether or not to control pests of cultivated crops and controlling the pests on the basis of the determination； and an intensive cultivation method. The facility is used for pesticide-free cultivation, and includes a crop cultivation house which is formed of a light transmissive material and in which crops are cultivated, and a lighting control unit that controls the light to be irradiated upon the crops in the crop cultivation house. The lighting control unit is adapted to control spectral radiance (B 1 ) of a wavelength range of blue light, spectral radiance (R 1 ) of a wavelength range of red light, and spectral radiance (FR 1 ) of a wavelength range of far-red light among the light to be irradiated on the crops that are cultivated in the crop cultivation house so as to be a predetermined condition.
