Effects of Carbon Amendments, Tillage and Cover Cropping on Arbuscular Mycorrhizal Fungi Association and Root Architecture in Corn and Cotton Crop Sequence

A field experiment was conducted to study the effects of carbon amendments, tillage, and cover cropping on arbuscular mycorrhizal fungi (AMF) association root architecture at Farm Services Texas A&M University. Three levels amendments rate 500 kg C ha−1 (biochar, composted biosolid, control (no amendment)), two tillage (conventional disking (CT) no (NT)), crop (a mixture oat, mustard, pea (CC) (NCC)) were arranged in a split-split plot design with four replications. Over two-year sequence corn followed by cotton, AMF colonization roots 4.43% greater biochar-treated soil than treatment. Colonization cotton 5.17% 6.09% under NT CC treatments, respectively, compared CT NCC. Carbon did not alter length but angle 20–30 cm. affect CC. However, angle. Root found differ among species. The results imply that farmers may combine certain practices optimize harness benefits AMF.