Summary
Mycorrhizal infection was studied in mixed samples from rain-forest roots in relation to soil fertility (pH(KCl), total P and P-Al), vegetation structure and litterfall in a rain forest reserve on terraces of different geological age. A marked lowering of topsoil pH and reduction in available phosphorus levels with increasing geological age was found. Vesicular-arbuscular mycorrhizal infection of root samples of mixed vegetation was negatively correlated with both soil pH and P-Al.
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Van Noordwijk, M., Hairiah, K. Mycorrhizal infection in relation to soil pH and soil phosphorus content in a rain forest of northern Sumatra. Plant Soil 96, 299–302 (1986). https://doi.org/10.1007/BF02374775
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DOI: https://doi.org/10.1007/BF02374775