PURPOSE: An agrichemical substitute containing sodium dichloroisocyanurate and sodium hydrogen carbonate is provided to prevent water and soil pollution. CONSTITUTION: An agrichemical substitute for treating mold diseases of crops contains sodium dichloroisocyanurate and sodium hydrogen carbonate. The crops include strawberries, pears, tangerines, Japanese apricots, grapes, paprika and tomatoes. The mold diseases include downy mildew, anthrax, fusarium wilt, black speck, grey mould and powdery mildew.