Mercury residues in apples from trees receiving organomercurial fungicide in the previous autumn and winter

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Abstract
SUMMARY: Mercury residues have been measured in apples from trees receiving experimental applications of phenylmercury chloride in the previous autumn and/or in the dormant season. In the absence of organomercurial sprays in the succeeding summer, mercury could not be found in the fruit at harvest. Even when post‐harvest or dormancy applications preceded conventional summer schedules of an organomercurial fungicide, residues of mercury at harvest were not increased.