The organo-mercurials fungicides used for dry seed treatment usually contain mercury

Answer: Option B

The organo-mercurials fungicides used for dry seed treatment usually contain mercury 1.0% of.
Organomercury compounds such as aryl and alkoxy-aryl have been used in medicine, agriculture, and laboratory research. Their use in fungicides has been greatly reduced or eliminated.
Organo mercurials are recommended for the treatment of small grains, flax, cotton and safflower.