The ash was digested in 1 mL HCl for 20 min, diluted with 9 mL 0.72 N H2SO4 and centrifuged (1640 g, 30 min) to settle any undigested matter. Total P of a 200 mL aliquot was determined using the methods of Serrano et al. (1976).
The ash was digested in 1 mL HCl for 20 min,diluted with 9 mL 0.72 N H2SO4 and centrifuged(1640 g, 30 min) to settle any undigested matter.Total P of a 200 mL aliquot was determinedusing the methods of Serrano et al. (1976).