Influences of non-herbaceous biochar on arbuscular mycorrhizal fungal abundances in roots and soils: Results from growth-chamber and field experiments

▶ Biochar can have negative effects on arbuscular mycorrhiza (AM). ▶ First measurement of soil hyphae responses to biochar. ▶ Phosphate effects important in determining biochar interactions with AM. ▶ Production parameters modulate biochar effects.