Effect of Lime and Farmyard Manure on the Concentration of Cadmium in Water Spinach (Ipomoea aquatica)

Table 1

Properties of soil and farmyard manure.

Properties	Soil	Farmyard manure
Sand	68%	—
Silt	14%	—
Clay	18%	—
pH	5.3	6.8
Organic carbon	0.71%	25%
Total N	0.10%	1.88%
CEC	6.02 cmol kg^−1	—
Total P	0.03%	0.35%
Total K	0.24%	1.79%
Total Cd	Below the detection limit (0.03 mg kg^−1)	0.30 mg kg^−1
Total Pb	7.4 mg kg^−1	—
Total Zn	57 mg kg^−1	—
Total Mn	190 mg kg^−1	—