Abstract
New technologies for the removal of volcanic ashes adhered to new shoots of tea plants were examined. The percentage of volcanic ash extraction with cyclone equipment was 60-75%. A tea -picking machine with a volcanic ash removal function removed about 60% of the ashes. A sprinkler in a tea garden removed volcanic ashes from about 80% of the shoots by watering at a rate of 30t per 10a. The volcanic ash extraction ratio of these new machines is superior to the machine used in the conventional method.
