Model environmental stress on crops! In this kit, test radish plants to determine salinity tolerance. Then, create a dose-response curve and graphically find the LD50 of a chemical pollutant. An invaluable, data-driven laboratory experience for CTE and agriscience. Contains enough materials for 10 groups of students, a Teacher's Manual, and a Student Study Guide copymaster. Aligned to AFNR standards PS.01 and PS.02.