GERMINATION AND SEEDLING GROWTH RESPONSES OF WATER SPINACH (IPOMOEA AQUATICA) AND SPINACH (SPINACIA OLERACEAE) AT VARYING LEAD CONCENTRATIONS

The germination and seedling growth responses of water spinach (Ipomoea aquatica) and spinach (Spinacia oleraceae) were assessed in varying concentrations of PbNO3. Germination of both water spinach and spinach was significantly affected by the increasing PbNO3 concentrations. Root length and shoot length of both the water spinach and spinach were inhibited by the high PbNO3 concentrations as compared to those containing low PbNO3 concentrations and control treatment.