Estimating Method for Shoot Nitrogen Level in 'Fuji' and 'Hongro' Apple Trees

摘要

The invention Fuji (Fuji) and hongro (Hongro) nitrogen levels determined by the color of an apple tree bark relates to a method , and specifically relates to an apple-tree , characterized in that the nitrogen level determination method for determining the level of nitrogen in accordance with the bark of apple tree branches to measure the chromaticity of the color of bark of apple tree branches each variety . In winter, in a simple way , according to the present invention can correctly determine the nitrogen level of the apple tree , and therefore successful orchard management is possible . ;