Inoculation of arbuscular mycorrhizal fungi as a strategy to improve annatto (Bixa orellana L.) growth

This study aimed to assess the occurrence of arbuscular mycorrhizal fungi (AMF) in annatto (Bixa orellana L.) cultivars and their response AMF inoculation using biometric parameters. The surveys were conducted fields three municipalities from Pernambuco Forest Zone: Lagoa de Itaenga, Gloria Goitá, Vitoria Santo Antão, four (Red Piave, Green Red Peruvian Paulista, Paulista). In a greenhouse, parameters seedlings Embrapa-36, Embrapa-37 inoculated with isolated fields. Piave cultivar exhibited greater root colonization than Paulista Itaenga Antão municipalities. showed more beneficial association plants soil did, both Antão. was effective promoting growth plants, particularly those inoculants S. heterogama C. etunicatum.