Filter Cake and Vinasse as Fertilizers Contributing to Conservation Agriculture

Table 3

The chemical requirements for oxygen (CRO), biological requirements for oxygen (BRO), electrical conductivity (EC), total dissolved solids (TDS), pH values, sodium and macronutrient concentrations of vinasse according to reports of various authors.

Determinations	Vinasse
	(*)	(51)	(17)	(15)	Average
CRO (mg L^−1)	21.450	26.771	48.860	—	32.360
BRO (mg L^−1)	10.000	5.000	21.275	—	12.092
EC (dS m^−1)	14.12	11.5	9.65	3.6	9.72
TDS (mg L^−1)	7.940	11.352	19.000	—	12.764
pH	4.5	4.4	4.6	5.7	4.8
N (mg L^−1)	410	—	—	560	485
P (mg L^−1)	160	—	175	190	175
K (mg L^−1)	3.100	1.123	1.392	960	1.644
Na (mg L^−1)	350	113	110	—	191
Ca (mg L^−1)	640	352	728	280	500
Mg (mg L^−1)	340	16	29	130	129

*: Data of the authors. —: Not determined.