Green Manure as an Alternative for Soil Recovery in a Bauxite Mining Environment in Southeast Brazil

Wesley da Silva Fonseca

Universidade Federal de Viçosa (UFV), Departamento de Engenharia Florestal, Laboratório de Restauração Florestal (LARF), Viçosa, MG, Brasil.

Sebastião Venâncio Martins

Universidade Federal de Viçosa (UFV), Departamento de Engenharia Florestal, Laboratório de Restauração Florestal (LARF), Viçosa, MG, Brasil.

Pedro Manuel Villa

Universidade Federal de Viçosa (UFV), Departamento de Engenharia Florestal, Laboratório de Restauração Florestal (LARF), Viçosa, MG, Brasil.

CORRESPONDENCE TO
Wesley da Silva Fonseca Universidade Federal de Viçosa (UFV), Departamento de Engenharia Florestal, Laboratório de Restauração Florestal (LARF), Av. P.H. Holfs, s/n, CEP 36570-900, Viçosa, MG, Brasil. e-mail: wesleyfonseca27@gmail.com

Associate editor:

Bárbara Bomfim Fernandes https://orcid.org/0000-0001-9510-2496

Botanical family	Species	SC	DS
Bignoniaceae	Handroanthus heptaphyllus (Vell.) Mattos	LS	Ane
	Handroanthus impetiginosus (Mart. Ex DC.) Mattos	LS	Ane
	Tabebuia roseoalba (Ridl.) Sandwith	ES	Ane
	Jacaranda micrantha Cham	ES	Ane
Cannabaceae	Trema micrantha (L.) Blume	P	Zoo
Euphorbiaceae	Alchornea glandulosa Poepp.	P	Zoo
	Sapium glandulosum (L.) Morong	P	Zoo
Fabaceae	Bauhinia forficata Link	P	Aut
	Caesalpinia pluviosa DC.	ES	Aut
	Clitoria fairchildiana R.A.Howard	ES	Aut
	Senegalia polyphylla (DC.) Britton & Killip	P	Aut
Malvaceae	Pseudobombax grandiflorum (Cav.) A.Robyns	P	Ane
Melastomataceae	Tibouchina granulosa (Desr.) Cogn.	P	Ane
Myrtaceae	Psidium guajava L.	P	Zoo
Solanaceae	Solanum pseudoquina A. St.-Hil.	ES	Zoo
Urticaceae	Cecropia glaziovii Snethl.	P	Zoo
	Cecropia hololeuca Miq.	P	Zoo
Verbenaceae	Citharexylum myrianthum Cham.	ES	Zoo

Parameters	months	CRO	STY	CAJ
pH (H₂0)	0	5.39	5.39	5.39
	18	6.97	7.06	6.84
	24	7.54	7.49	7.40
OM (dag/kg)	0	0.25	0.25	0.25
	18	1.88	1.75	2.28
	24	5.09	2.93	3.26
Total-N (dag/kg)	0	0.022	0.022	0.022
	18	0.076	0.061	0.076
	24	0.223	0.140	0.139
P (mg/dm³)	0	4.40	4.40	4.40
	18	463.1	463.1	283.8
	24	614.7	509.7	547.6
K (mg/dm³)	0	21	21	21
	18	89	52	58
	24	283	98	161
Ca²⁺ (cmolc/dm³)	0	0.59	0.59	0.59
	18	4.22	3.52	3.13
	24	4.87	4.2	4.46
Mg²⁺ (cmolc/dm³)	0	0.18	0.18	0.18
	18	1.76	0.86	0.72
	24	2.16	1.83	2.00
H+Al (cmolc/dm³)	0	1.5	1.5	1.5
	18	0.6	0.0	0.3
	24	0.0	0.2	0.6
SB (cmolc/dm³)	0	0.82	0.82	0.82
	18	6.21	4.51	4.00
	24	7.76	6.28	6.87
ECEC (cmolc/dm³)	0	0.82	0.82	0.82
	18	6.21	4.51	4.00
	24	7.76	6.28	6.87
CEC (cmolc/dm³)	0	2.32	2.32	2.32
	18	6.81	4.51	4.30
	24	7.76	6.48	7.47
V (%)	0	35.3	35.3	35.3
	18	91.2	100	93.0
	24	100	96.9	92.0
P-rem (mg/L)	0	12.9	12.9	12.9
	18	17.6	18.2	18.6
	24	26.4	24.4	20.8

Green manures	pH	OM	P	K	Ca²⁺	Mg²⁺	H+Al	SB	ECEC	CEC	V	P-rem
CRO	Weak acid	L	VH	H	VH	VH	VL	VH	H	M	VH	VH
STY	Neutral	L	VH	M	H	M	VL	H	M	M	VH	VH
CAJ	Weak acid	M	VH	M	H	M	VL	H	M	L	VH	VH

Green manures	pH	OM	P	K	Ca²⁺	Mg²⁺	H+Al	SB	ECEC	CEC	V	P-rem
Cro	Weak alkali	H	VH	VH	VH	VH	VL	VH	H	M	VH	VH
Sty	Weak alkali	M	VH	H	VH	VH	VL	VH	H	M	VH	VH
Caj	Weak alkali	M	VH	VH	VH	VH	VL	VH	H	M	VH	VH

Brasil