This activity provides opportunities for students to develop an understanding of the effects of increased soil salinity on both native and agricultural ecosystems.
Students investigate the effects of soil salinity on seed germination and plant growth.
Due to time constraints it is most practical to use plants whose seeds germinate and grow quickly. Examples are bean or sunflower seeds, or fast-growing species native to the local area, such as acacias. Experimentation must run over a number of weeks because it takes time for seeds to germinate and grow. In cases where seedlings are required, seeds must be prepared well in advance. Germination and growth rates vary significantly from summer to winter.