Why are microbes important in agricultural production?

All Microbes, All the Time (PDF)- Presentation by Jonathan Eison about the significance of microbes in agriculture

How can soil carbon and microbial biomass improve plant-soil-nitrogen cycling and plant nutrition?

Soil Biology and Nutrient Cycling on Yolo County Organic Farms (PDF)- Presentation by Louise Jackson about soil biology and nutrient cycling as well as the role of mycorrhizal fungi and microbial biomass in nutrient cycling