The Influence of Vermicompost and Various Concentrations of Lead on the Enzymatic Activity of Sierozem Soils of Kazakhstan

Table 5

Catalase activity in the soil-clover system.

The concentration of lead in the soil (mg/kg)	Catalase activity in soil (cm^3) O2/g in 1 min		Catalase activity in clover (cm^3) O2/g in 1 min		Total catalase activity (cm^3) O2/g in 1 min (July)
	May	July	May (1st mowing)	July (3rd mowing)
Plot no. 1
Control (0)	2.8 ± 0.12	3.7 ± 0.15	10.4 ± 0.52	15.6 ± 0.75	19.3 ± 0.92
16	3.5 ± 0.13	5.0 ± 0.14	10.9 ± 0.50	11.6 ± 0.56	16.6 ± 0.74
80	4.0 ± 0.15	4.8 ± 0.17	13.2 ± 0.64	15.0 ± 0.73	19.8 ± 0.94
160	4.9 ± 0.11	6.4 ± 0.21	16.5 ± 1.0	22.8 ± 1.14	29.2 ± 1.33
Plot no. 2
Control (0) + vermicompost	3.0 ± 0.16	3.2 ± 0.18	17.1 ± 1.10	20.9 ± 1.11	24.1 ± 1.22
16	3.6 ± 0.11	4.8 ± 0.13	18.9 ± 1.12	20.9 ± 1.16	26.7 ± 1.14
80	3.9 ± 0.15	7.3 ± 0.17	20.8 ± 0.87	19.9 ± 0.93	27.2 ± 1.26
160	4.7 ± 0.18	6.4 ± 0.21	21.8 ± 0.91	22.8 ± 1.14	29.2 ± 1.33