Interaction between Soil Physicochemical Parameters and Earthworm Communities in Irrigated Areas with Natural Water and Wastewaters

Table 5

Results of statistical analyses of physicochemical characteristics in different sites of the study.

Region	Variables Sites					Da		K 0.05	K 0.3	K 0.6	K 1		EC	CaCo3%	CaCo3%
El Madher; (sites irrigated by wastewaters downstream of El Gourzi effluent)	S1	M	25,06	0,39	38,44	0,87	65,13	9,81	4,53	2,78	1,29	2,73	0,71	26,46	9,90	8,49
		SD	5,294	0,051	2,527	0,092	3,475	0,473	0,839	0,422	0,134	1,225	0,611	2,962	4,129	0,162
	S2	M	22,62	0,46	27,59	0,73	70,49	26,36	10,89	6,06	3,10	1,74	0,60	43,38	12,65	8,44
		SD	2,566	0,072	5,259	0,031	1,175	2,231	1,401	1,091	0,299	0,830	0,294	6,118	4,072	0,134
	S3	M	27,87	0,29	28,73	1,00	60,30	24,91	14,44	7,07	3,41	3,66	0,53	23,53	12,45	8,55
		SD	6,137	0,137	1,818	0,079	2,964	1,000	0,610	0,358	0,172	0,563	0,175	2,407	0,371	0,049
	S4	M	24,97	0,31	36,06	0,84	66,28	15,89	6,67	3,83	1,91	6,43	0,28	36,91	24,92	7,68
		SD	5,294	0,125	0,816	0,039	1,466	1,649	1,536	0,477	0,191	2,065	0,039	9,423	5,450	0,216
	S5	M	22,33	0,23	28,51	0,92	63,30	25,85	9,46	4,20	2,43	5,12	0,20	31,31	20,32	7,96
		SD	2,566	0,094	3,069	0,015	0,551	2,346	2,642	0,919	0,274	0,980	0,081	3,387	2,803	0,206
	S6	M	24,97	0,19	33,23	0,88	64,94	22,28	11,83	5,18	3,90	6,28	0,36	29,10	35,60	7,93
		SD	6,137	0,056	2,148	0,024	0,907	1,822	1,006	0,917	0,826	1,492	0,159	5,266	5,265	0,335
Ouled Si Slimane; (sites irrigated by natural water of El Kochbi effluent)	S7	M	45,66	0,50	30,59	1,08	57,34	10,80	5,89	3,46	1,57	2,49	0,26	58,23	11,80	7,83
		SD	6,310	0,122	7,061	0,113	4,282	0,489	0,495	0,200	0,111	0,493	0,034	3,984	4,712	0,055
	S8	M	26,82	0,86	27,86	0,93	63,08	19,18	14,89	7,51	3,81	1,72	0,21	53,69	15,70	7,75
		SD	3,191	0,066	4,382	0,032	1,207	3,878	1,134	0,593	0,360	0,433	0,036	6,468	2,683	0,031
	S9	M	24,63	0,78	24,94	0,97	61,55	19,47	13,06	7,24	3,19	2,12	0,59	51,82	18,00	7,92
		SD	3,944	0,089	3,446	0,091	3,442	3,274	0,806	0,501	0,212	0,461	0,291	15,05	4,077	0,073
Ranges values/site	Max		S7	S8	S1	S7	S2	S2	S8	S8	S6	S4	S1	S7	S6	S3
	Min		S5	S6	S9	S2	S7	S1	S1	S1	S1	S2	S5	S3	S1	S8
ANOVA results	Effect Fd		8	8	8	8	8	8	8	8	8	8	8	8	8	8
	F		6,28	30.86	6.54	11,38	11.17	39.44	41.53	35.31	38.02	15.19	2.75	16.07	20.62	19.68
	P		0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.000	0.017	0.000	0.000	0.000

Highly significant. Significant. NS: not significant; M: mean; SD: standard difference; F: Fischer number; P: probability level; Fd: freedom degree.