Nutritional evaluation of Acacia mangium, Sesbania virgata and Eucalyptus camaldulensis, inoculated with mycorrhizal fungi, grown under greenhouse conditions and in an area of clay extraction. This work aimed to evaluate, under greenhouse conditions, the effects of arbuscular mycorrhizal fungi (AMF) on the nutrient uptake of Acacia mangium, Sesbania virgata and Eucalyptus camaldulensis, as well as, the influence of these fungi on the shoot nutrient content of these plant species, when cultivated in single and intercropping systems, under field conditions in an area of clay extraction. Under greenhouse conditions, AMF inoculation increased N, P and Zn content of A. mangium by 22, 71 and 67%, respectively, and in S. virgata the increase of N, P, Ca, Mg, Mn and Zn was of 39, 49, 56, 24, 105 and 54%, respectively. Under field conditions, A. mangium, when cultivated together with S. virgata, presented lowest Ca content in shoots. AMF inoculation increased the Mg content in A. mangium by 36%, when the plants were grown together with E. camaldulensis. S. virgata plants in intercrop with A. mangium and/or E. camaldulensis presented lower Mg content than when cultivated in single system. On the other hand, E. camaldulensis plants without AMF inoculation cultivated together with A. mangium and/or S. virgata presented lower N content than the plants grown in single system. No nutritional improvement was observed in E. camaldulensis plants clue to intercropping systems.
