A method for discriminating soil in which organic fertilizer was excessively applied

摘要

This invention relates to a process for the organic fertilizer to the soil to determine whether the trial is over . More specifically , the present invention compares the nitrogen isotope index value of the organic manure by trial and nitrogen isotope index value of the soil obtained after the harvesting of crops and crops harvested from the soil of organic fertilizer trial , the soil fertilizers the trial by the excess is provided a method for determining whether the crops grown in the soil .