Biomass and Yield of Peanut Grown on Tropical Soil Amended with Sewage Sludge Contaminated with Lead

Table 1

Selected chemical characteristics of soil samples used in this study and interpretation of values^†.

pHCaCl2	OM	Resin P	K	Ca	Mg	SB^‡	H+Al	CEC^§	BS^¶
	g dm^−3	mg dm^−3	mmolc dm^−3						%
5.6	17.8	1.0	5.2	18.2	4.7	28.1	11.0	39.1	71.9
Low acidity	—	Very low	High	High	Low	—	—	—	High

^†According to Raij et. al. [10].
^‡Sum of bases (K + Ca + Mg).
^§Cation exchange capacity (SB + H+Al).
^¶Base saturation ((SB/CEC)×100).