Investigating the Effects of Various Soil Amendments on Forages Production in the Field

Table 7

Soil analyses after harvesting.

Soil-amendment	pH	EC	Soil salinity class	Available K (mg/kg)	Olsen P (mg/kg)
Control-60%	8.0	0.53	Nonsaline	26.9	0.6
Control-100%	7.9	0.40	Nonsaline	26.30	0.4
Commercial compost
5 tons/ha	8.31	1.40	Nonsaline	77.54	16.4
7.5 tons/ha	8.38	2.33	Slightly saline	78.01	22.6
10 tons/ha	8.65	2.78	Slightly saline	80.34	30.7
Compost
5 tons/ha	8.24	1.36	Nonsaline	92.43	30.34
7.5 tons/ha	8.32	2.01	Slightly saline	95.01	44.08
10 tons/ha	8.41	2.12	Slightly saline	97.0	45.09
Biochar
5 tons/ha	8.11	1.8	Nonsaline	78.12	24.78
7.5 tons/ha	8.0	2.3	Slightly saline	82.37	29.87
10 tons/ha	8.33	2.7	Slightly saline	85.17	32.74
Soil conditioner
5 tons/ha	8.01	1.63	Nonsaline	67.43	22.54
7.5 tons/ha	8.23	1.76	Nonsaline	70.22	28.65
10 tons/ha	8.40	2.11	Slightly saline	74.01	32.78