LABORATORY TESTS ON THE RAPIDITY OF MOLLUSCACIDAL ACTION OF 5 CHEMICALS

Abstract

The molluscacidal effect upon the snail (Oncomelania nosophora) by 5 molluscacides (86% Sodium pentachlorophenate, 80% Sodium pentachlorophenate, Santobrite, 40% Dinitro-O-cyclohexylphenol, ammonium sulphate) were tested in the laboratory and the following results were obtained.
1) Amm. sulfate and 40% DN-1, showed no mulluscacidal effect on snails collected in spring, summer and autumn.
2) 86% PCP-Na and 79% PCP-Na showed molluscacidal effect on snails collected in summer but the former showed the strong molluscacidal effect on snails collected in spring and the latter showed the strongest effect on snails in summer.
3) 80% PCP-Na showed the strong mulluscacidal effect on snails, collected in autumn.