In Morocco field trials, combining arbuscular mycorrhizal fungi (AMF) with compost dramatically boosted quinoa’s drought resistance . The joint treatment increased grain yield by up to 160%, seed protein by 57%, and phosphorus content by 146% under water stress. Plants also showed higher photosynthesis and lower oxidative stress compared to fungi or compost alone. The Titicaca variety proved most resilient, maintaining a 76% drought tolerance index.