Influence of arbuscular mycorrhiza and phosphate rock on uptake of major nutrients by Acacia mangium seedlings on degraded soil

Author： Satter M.

Publisher： Springer Publishing Company

ISSN： 0178-2762

Source： Biology and Fertility of Soils, Vol.42, Iss.4, 2006-03, pp. : 345-349

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Abstract

To investigate the effects of arbuscular mycorrhiza (AM) and phosphorus (P) source on the uptake of major nutrients by Acacia mangium</i> seedlings, three P sources were used: (1) Gafsa phosphate rock (GPR), (2) China phosphate rock (CPR), and (3) triple superphosphate (TSP). The plant samples were analyzed at 60, 75, 90, 105, 120, and 135 days after planting (DAP) for their N, P, K, Ca, and Mg contents. The uptake of these nutrients was significantly influenced by AM inoculation. Nutrient use efficiency in the AM-inoculated seedlings was also significantly higher than that in uninoculated seedlings. The effect of P sources on the uptake of these nutrients decreased in the order of TSP>GPR>CPR>control. There was a significant (P</i><0.05) interaction="" effect="" of="" am="" and="" p="" source="" on="" p="" and="" k="" uptake="" by=""></0.05)>A. mangium</i>. The uptake of P and K by mycorrhizal seedlings supplemented with TSP was significantly higher than that provided with other sources of P treatments. As a natural and cheaper P source, GPR might be used in combination with AM for growing A. mangium</i> seedlings on degraded tin tailings.