Table 2.

Variation in soil properties: cation exchange capacity (CEC) (meq 100 g⁻¹), available P (mg kg⁻¹), exchangeable K, Ca, and Mg (mg kg⁻¹), NH₄-N, and NO₃-N (mg kg⁻¹) contents with sites and time points.

Site	Season	Time point	CEC		Avail. P		Exch. K		Exch. Ca		Exch. Mg		NH4-N		NO3-N
			Mean	Std.	Mean	Std.	Mean	Std.	Mean	Std.	Mean	Std.	Mean	Std.	Mean	Std.
CF-5Y	Summer	March 2022	18.48	0.45	6.19a	0.12	155.81	3.24	204.32a	0.56	97.90	1.29	17.77a	5.03	7.11a	0.00
	Rainy	June 2022	15.97	0.67	10.60a	0.31	177.15	4.19	214.73a	3.92	100.77a	2.04	14.21a	0.00	7.11a	0.00
		September 2022	14.80	0.64	15.12a	0.33	194.86	4.52	231.90a	4.23	108.82	2.20	14.21a	0.00	7.11a	0.00
	Winter	December 2022	14.97	0.15	5.82a	0.37	164.03	4.98	255.09	4.65	119.70	2.42	21.32	0.00	14.21	0.00
	Summer	March 2023	16.25	0.33	8.33a	0.39	172.30	8.38	255.09	4.65	117.24	5.71	21.32	0.00	14.21	0.00
M-5Y	Summer	March 2022	11.36	1.16	40.66b	1.89	171.79	6.56	306.66b	18.21	119.13	6.31	35.53b	0.00	28.42b	0.00
	Rainy	June 2022	14.40	0.00	41.89b	2.28	195.25	6.00	385.99b	27.98	203.33b	11.37	35.53b	0.00	35.53b	0.00
		September 2022	14.40	0.00	53.57b	1.70	232.39	19.76	348.57b	31.06	161.65	3.15	35.53b	0.00	35.53b	0.00
	Winter	December 2022	12.13	0.21	19.48b	0.76	183.87	3.67	289.73	24.46	148.46	1.90	28.42	0.00	14.21	0.00
	Summer	March 2023	11.20	0.57	37.82b	2.47	177.95	2.49	270.79	17.66	135.11	3.75	21.32	0.00	14.21	0.00

^a,bSignificant statistical differences (p < 0.05) between CF-5Y and M-5Y fields.