Characterize impacts of soil properties and management on soil biology Soil Organic Matter You should be able to: List and describe the important effects of organic matter on soil properties List and describe the chemical fractions of decomposing plant biomass and soil organic matter List and describe the conceptual fractions of soil organic matter used in SOM modeling Contrast the uses of C:N and lignin:N ratios Discuss the origin and characteristics of humus Characterize the impacts of management on soil organic matter dynamics Discuss the fate of decomposing plant residues and the impact of their chemistry on decomposition rates and consequences for nutrient 
(You; to List; ) (soil organic matter; used; L:in SOM modeling) (characteristics of humus; Characterize; the impacts of management on soil organic matter dynamics) (You; to describe; the important effects of organic matter on soil properties) (N and lignin:N ratios; Discuss; the origin)
You soil organic matter characteristics of humus You N and lignin:N ratios
to List used Characterize to describe Discuss
L:in SOM modeling
the impacts of management on soil organic matter dynamics
the important effects of organic matter on soil properties
the origin