The effects of inoculation with arbuscular mycorrhizal fungus (AMF), substratum fumigation, and addition of soluble phosphate on papaya plant cultivar "Sunrise Solo" parameters (height, leaf number, and stem diameter) were studied. Separate treatments with AMF inoculation (Glomus macrocarpum) and increasing phosphorus levels (60, 120, 240, and 480 mg kg-1 of P in soil) influenced these parameters significantly, while the factor substratum fumigation had no significant effect. The inoculation effect was most expressive when 60 mg kg-1 of P in soil was added. Such was the reduction in phosphorus requirement of papaya by Glomus macrocarpum inoculation, that the studied parameters between inoculated plants without phosphate addition and not-inoculated ones in substratum enriched with over 240 mg kg-1 of P in soil did not differ.
Carica papaya; Glomus macrocarpum; height; stem diameter; leaf number; phosphorus levels; substratum disinfection
