Development of a curing system for grafted seedlings utilized the plant bio-information instrumentation

Grafted seedlings are mainly used fruit vegetables such as Solanaceae and Cucurbitaceae in order to avoid replant failure and grow the seedlings which are resistant to soil invasive diseases. The production of grafted seedlings has some important processes such as nursing seedlings for grafting, grafting operation, curing grafted seedlings, preservation of grafted seedling for production adjustment. It is important that there are consistently all of these processes. The conventional curing environment controlled on the basis of the time is not always optimum for the grafted seedling. Then, the method for controlling on the basis of physiological information of the plant was considered. A curing system for grafted seedlings utilized the plant bio-information instrumentation was fabricated. The curing equipment was identified with two regression formulas. The CCD video camera equipment which measured the top view image of the seedlings was installed for the curing equipment in order to obtain community information of the seedling. Both the mean value of the luminance and the projected area value of the image obtained after the difference between two images chosen with the progress as a wilting were calculated. It was found that these two values were increasing as the wilting degree was advancing.