Table 1.

Transfer factor for As in bean and lettuce irrigated with different concentrations of As-containing water

	Control	0.1 mg/L	0.25 mg/L	0.5 mg/L
Bean (root to shoot)
Young stage	0.04	0.08	0.15	0.19
Flowering stage	0.09	0.14	0.22	0.41
Fruiting stage	0.08	0.11	0.14	0.18
Bean (root to flower/fruit)
Flowering stage	0.005	0.006	0.013	0.019
Fruiting stage	0.010	0.003	0.002	0.005
Lettuce (root to shoot)
Young stage	0.09	0.19	0.23	0.27
Mature stage	0.08	0.14	0.23	0.27