Fall cover cropping can increase arbuscular mycorrhizae in soils supporting intensive agricultural production

► Low numbers of arbuscular mycorrhizal fungi (AMF) can limit plant productivity. ► Agricultural soils commonly have low numbers of AMF. ► We evaluated fall cover crops for increasing AMF inoculum potential in production agriculture. ► Fall cover crops increased AMF. ► Forage oats and mixed cover crops increased AMF inoculum potential the most.