5 research outputs found

    Role of VAM on growth and phosphorus nutrition of maize with low soluble phosphate fertilization Efecto de la infestaci贸n con micorrizas vesiculo arbusculares (VAM) en plantas de Zea mays) fertilizadas con dosis bajas de f贸sforo

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    The effect of vesicular arbuscular mycorrhizal (VAM) infection on growth and P nutrition in Maize (Zea mays, cv.DDH hybrid) were assessed in Oxisol pot experiment. Maize was grown inoculated with spores of VAM fungi Glomus mosseae or non-inoculated. Low soluble ferrous phosphate (FePO4.4H2O) was added to the mycorrhized and non-micrrohized maized. The dry weight of mycorrhized plants with added phosphate (P) were higher than in mycorrhized plants without added P or non-mycorrhized plants with added P. The amount of P in the soil samples from pots with mycorrhizal plants fertilized with P was evidently smaller than those in samples also fertilized non-mycorrhizal plants. The percentage of P was higher in tissues of fertilized mycorrhial plants than in those mycorrihzed plants without or nonmycorrhized plants with added low-soluble P. These results indicated that plants in VAM symbiosis mobilize P better from low-soluble P than non-mycorrhized plants.En condiciones de casa de malla se evalu贸 el efecto de la infestaci贸n con micorrizas ves铆culo arbusculares (VAM) en la asimilaci贸n de P por plantas de ma铆z (Zea mays, cv.DDH hybrid) cultivadas en un Oxisol. Como micorriza se utiliz贸 el hongo Glomus mosseae. En ambos tratamientos (con micorriza y sin ella) se aplic贸 fosfato ferroso (FePO4.4H2O). La producci贸n de MS de ma铆z fue mayor cuando se aplicaron el hongo + la fuente de P. La cantidad de P en el suelo con este tratamiento fue menor que en el suelo fertilizado pero sin aplicaci贸n del hongo. En las hojas de las plantas las mayores concentraciones de P se observaron igualmente en el tratamiento micorriza + aplicaci贸n de fertilizante
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