Residual Effects of Biosolids Application on Forage Production of Semiarid Grassland in Jalisco, Mexico

Table 1

Chemical composition of aerobic biosolids from the wastewater treatment plant at Aguascalientes city (𝑛=4).

Parameter	Mean	Element (ppm)	Mean
pH (water 1 : 5)	6.6	Zinc	972
EC^† (water 1 : 5) (dS m^−1)	1.5	Boron	2
Organic matter (%)	35.2	Iron	8564
Nitrogen (%)	4.1	Copper	272
Phosphorus (%)	3.4	Lead	38
Potassium (%)	0.1	Arsenic	11
Calcium (%)	2.7	Chromium	60
Magnesium (%)	0.3	Cadmium	6
Sulfur (%)	1.0	Manganese	153
Aluminum (%)	1.0	Chloride	832

 ^†Electrical conductivity.