Sekkai iogozai
It is agrochemical lime sulfur that has been used for a long time. It is reddish brown transparent water solution containing 27.5 percent calcium polysulfide. The nucleus of the active component is calcium polysulfide. It is chiefly used as a germicide as well as against ticks and to eradicate scale insects. It is effective for combating rust, powdery mildew and germs, such as red and black spots on leaves and branches, and contraction of leaves.
translated by Kyodo News