New study proves nitrogen addition significantly decreases arbuscular mycorrhizal fungi

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native grasses

New study proves nitrogen addition significantly decreases arbuscular mycorrhizal fungi (AMF) abundance by an average of 27%, and decreased function by an average of 42%. AMF transfer N to plant hosts directly via amino acids. AMF aid in the weathering of soil minerals through their exudates and high rates of respiration. Native grasslands are abundant in AMF, resulting in little or no N needed when pasture cropping into native grasslands.

Soil Biology and Biochemistry paper: “N addition undermines N supplied by arbuscular mycorrhizal fungi to native perennial grasses”

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