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Phosphorus Use Efficiency and Fertilizers: future opportunities for improvements

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Figure

Table 1World mine production of rock phosphate and current known reserves in thousand tonnes
Fig. 1, 90quantity may seem high, but it should be remembered thatthe initial available phosphorus (Olsen phosphorus) valueof the soil was 6.7 mgdemonstrating that as the soil phosphorus status increases,a modest increase in yield requires considerable add
Fig. 2Effect of pH on the concentration of total phosphorus(TP), reactive phosphorus (RP), and phytase labile P extracted inultrapure water.
Fig. 3Leaf lipid remodeling in response to growth at low soilphosphorus. PL, phospholipids; PLD, phospholipiase D;PLC, phospholipiase C; NPC5, non-specific phospholipiase C5;PA, phosphatidic acid; PAH, phosphatidic acid phosphohy-drolase; DAG, diacylglycerol; MGDG, monogalatosyldiglycerol;MGDGS, monogalactosyl diacyglycerol synthase; DGDG, di-galactosyldiacyglycerol; DGDGS, digalactosyldiacyglycerolsynthase; SQD2, sulfolipid synthase; SQDG, sulphoquinovosyl-diglyceride.

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