METHOD FOR EVALUATING THE PHOTOSYNTHETIC ACTIVITY OF A PLANT AND, IN CASE OF PERTURBATION, FOR IDENTIFYING THE DEFICIENCIES IN PARTICULAR NUTRITIONAL AND DEVICE THEREFOR

摘要

Process to evaluate photosynthesis activity of plant, and identify particularly nutritional deficiency, comprises measuring chlorophyll fluorescence. Number of fluorescent curves are taken from a database, identified by their parameters, forming reference fluorescence parameters to determine possible nutritional deficiencies. Process to evaluate the photosynthesis activity of at least one plant, and identify particularly the nutritional deficiency, comprises measuring the chlorophyll fluorescence using a fluorometric instrument (1) with a sample in a leaf clip. A number of fluorescent curves are taken from a database, identified by their parameters, forming reference fluorescence parameters to determine possible nutritional deficiencies. The chlorophyll fluorescence is measured at the plant, and the fluorescent curves are stored in memory, to be compared with the reference curves to establish the health of the plant. The state of health is attached and, in the event of a deficiency, the possible nutritional deficiencies. The projector (3) has a photodiode (31) in a small housing (30) to produce light flashes and a receiver (36) to register fluorescence. The projector housing is linked by a cable (4) to a control box (2). An Independent claim is also included for the apparatus used to carry out the process.