Crop rotations differ in soil carbon stabilization efficiency, but the response to quality of structural plant inputs is ambiguous

Publication Description:

This study set out to evaluate crop rotation diversity, perenniality, carbon inputs, and carbon input quality as predictors of soil organic carbon concentration and aggregate size.

Core Ideas:

Including a perennial forage such as alfalfa, perennializing rotations by including winter cereals and cover crops, and limiting soybean frequency promotes soil aggregation and carbon sequestration more so than optimizing crop rotation diversity. Quality of structural plant inputs does not explain differences in C stabilization efficiency, possibly due to overriding influence of living root inputs.

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