Add content about Soil Sciences

I'm a college undergrad and a majority of my courses for the next 2.5 years relate back to soil sciences in some way.  I really would love some videos about soil science so I can review things without having to dig up my old notebooks and textbooks for soil sciences.

Some of the topics I would love to see are:

• nutrient cycling for nutrients other than N and P (also the forms of the nutrients that are readily available for plant uptake)
• Nutrient deficiencies in plants
• cation exchange capacities in clays
• soil types and soil horizons
• soil treatments for different things like saline, alkaline, or acidic soils
• fertilizers for different nutrients in agriculture (where they come from, how effective they are, pros and cons of the fertilizers)
• basic soil ecology
• microbial N fixation (and microbial interactions with other nutrients too)

There are others I would love to see, but these are always the things I struggle with remembering.

Thank you anybody who reads this! Keep up the good work!