Tillage Practices and Soil Chemistry PBL Project
Students will explore how chemical bonding, chemical reactions and chemical equilibrium are demonstrated through the relationship between tilled soil and water runoff. Students build upon their knowledge of atomic structure to explore the various forms of chemical bonding that takes place between atoms of different elements as well as the role of valence electrons. To deepen understanding of chemical interactions, students will investigate both the physical and chemical changes that take place during tillage. Specifically, students will evaluate specific tillage methods in relation to cation exchange capacity (CEC), soil structure, nutrient availability and plant health. The unit concludes with a student presentation recommending tillage protocols for a local agricultural producer.
This unit is brought to you by Dane White (CTE) with support from the CTE Online curriculum leadership team and detailed coordination provided by the Course Team Lead Gayle Nicholls-Ali.