Table 3.

Chemical status of the initial soil of the experimental plot.

Depth	pH	OM	Total  N	P	S	B	Cu	Fe	Mn	Zn	K	Ca	Mg
(cm)	—	(%)	(%)	(mg kg−1)
0–25	5.7	1.30	0.085	13	12	0.15	7.34	590	17.63	2.12	70	1202	240
Critical level			—	14	14	0.20	1.0	10.0	5.00	2.00	78	400	96