Phosphorus Speciation by 31P NMR Spectroscopy in Leaf Litters and Crop Residues from Para Rubber, Cocoa, Oil Palm, and Banana Plantations in the Humid Forest Zone of Cameroon
Table 4
The relative percentage of total extractable inorganic and organic P species in the NaOH-EDTA extracts based on total NMR peak area. Total P and total NaOH -EDTA-P concentration in mg kg−1 and % recovery.