LDSF Topsoil Phosphorus Sorption Index (PSI)
Phosphorus is an essential component of most biochemical processes. It enhances photosynthesis, nitrogen fixation, flowering, fruiting and maturation. Specifically it has been shown to stimulate root development, increase plant stem and stalk strength, improve flower formation and seed production, improve crop maturity, increase resistance to plant diseases.
The average value of Mehlich-3 extractable phosphorus (M-3e P) was extremely low for topsoil (0-20 cm) was 2.2 mg kg-1 and for subsoil (20-50 cm) 1.7 mg kg-1.
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