Abstract
In a 3 × 3 factorial experiment, Chile Ancho pepper (Capsicum annuum L. cv. San Luis) plants were inoculated or not with VA - mycorrhizal (VAM) Glomus fasciculatum and a Glomus sps isolate from Mexico (ZAC-19). Long Ashton Nutrient solution (LANS) were modified to supply P at II, 22 or 44 μg/ml to containerized plants, grown in a greenhouse for 72 days. The container medium was a modified 77% sand, 13% silt, 9% clay soil collected from an agricultural production site in Irapuato, Guanajuato, Mexico. Both P and VAM enhanced plant growth and development. Increasing P enhanced leaf area, fruit, shoot and root dry weight and shoot/root ratio; the leaf area ratio (LAR) decreased. Greater VAM growth enhancement occurred at Il and 22, than 44 μg/ml P. Growth enhancement was greater with Glomus fasciculatum than the mixed Glomus sps isolate (ZAC - 19).
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