Which soil zones in Alberta are considered the most productive for agricultural purposes?

The Black and Dark Gray soil zones in Alberta are recognized as the most productive for agricultural purposes due to their rich nutrient content and favorable physical characteristics. These soils typically have a thick layer of organic matter, also known as humus, which contributes to high fertility. The Black soil zone, in particular, is known for its darker color, indicative of a high organic matter content. This rich soil supports a diversity of crops, making it ideal for agriculture.

Dark Gray soils, while slightly less fertile than Black soils, still offer excellent conditions for farming due to their moisture-retaining capabilities and nutrient availability. Together, these two soil zones create an environment conducive to high agricultural productivity, supporting the growth of various crops, including grains and pulses, which are staples in Alberta's farming sector.

The other soil zones mentioned, such as Brown, Dark Brown, and Gray, do offer some agricultural potential but generally lack the depth and nutrient density found in the Black and Dark Gray zones, making them less favorable for high-yield farming activities.