3.2. Soil organic carbon, nitrogen, and phosphorus
Measured SOC, SON, and SOP were relatively high in lemon grass,
young Acacia spp. and A. mangium plots, whereas they were low in
E. exserta, cassava, and R. regia plots, except for the normal SOP level
in the R. regia plots (Table 3). The highest mean SOC was 5.2% in the
lemon grass land, followed by 4.8% in Acacia spp. forest. R. regia had