PLANT NUTRITIONAL STATE DIAGNOSIS METHOD, PLANT NUTRITIONAL STATE RECOVERY METHOD, PLANT NUTRITIONAL STATE DIAGNOSIS DEVICE, AND PLANT NUTRITIONAL STATE RECOVERY DEVICE
What is provided by the present invention are a method of diagnosing the nutritional status of a plant and a method of restoring the nutritional status of a plant quickly and accurately. Also, an apparatus of diagnosing the nutritional status of a plant and an apparatus of restoring the nutritional status of a plant quickly and accurately, are provided. The method of restoring the nutritional status of a plant includes the steps of: (a) detecting a bioelectrical potential of the plant at a control frequency and at one or more detection frequencies (b) diagnosing the nutritional status of the plant based on the bioelectrical potential detected at the control frequency and the bioelectrical frequency detected at the detection frequency and (c) restoring the nutritional status of the plant by a stimulation in which the plant is exposed to blinking light with a frequency of 44 Hz or less in a case where the nutrition status of the plant is diagnosed as being in a defective state in the step (b).