Tropical tree growth is correlated with soil phosphorus, potassium, and calcium, though not for legumes

By T. Baribault, R. Kobe, Andrew O. Finley. 2012

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Nitrogen and phosphorus interact to control tropical symbiotic N2 fixation: a test in Inga punctata (2013, background): “Both mechanisms could allow the plant to access additional phosphorus (Robson et al. 1981; Joner et al. 2000; Wang et al. 2007; Houlton et al. 2008; Turner 2008; Baribault et al. 2012).”
Global assessment of limitation to symbiotic nitrogen fixation by phosphorus availability in terrestrial ecosystems using a meta‐analysis approach (2013, background): “, 2011], particularly in tropical regions where different nutrient colimitation may occur [Baribault et al., 2012; Townsend et al., 2011; Vitousek and Sanford, 1986; Wright et al., 2011; Wurzburger et al., 2012].”
Role of forest regrowth in global carbon sink dynamics (2019, background): “Further constraints around the availability of limiting nutrients not considered here, including P and K (28), in regrowth forest stands are required to definitively assess this hypothesis.”