Crash Course
What is Soil (and Why is it Important)?: Crash Course Geography
Soil brings together all four spheres of physical geography, and understanding soil composition is kind of like baking! So in today's episode, we're going to show you how to create the perfect soil cake, examine its different soil...
US Department of Agriculture
Soil Testing to Manage Nitrates on Delaware farms
USDA's Natural Resources Conservation Service in Delaware and its partners are helping farmers take care of their soil and the environment. Jacob Urian of the Kent Conservation District demonstrates how to conduct a Pre-Side Dressing...
Visual Learning Systems
Understanding Soil Horizons
This video explains the concept of soil horizons and the different layers that make up a soil profile. It highlights the three main horizons - A, B, and C - and their characteristics, such as nutrient content, humus presence, and mineral...