SYMBIOTIC EFFECTIVENESS AND COMPETITIVENESS OF CALOPO RHIZOBIAL
					ISOLATES IN AN <i>ARGISSOLO VERMELHO-AMARELO</i> UNDER THREE
					VEGETATION COVERS IN THE DRY FOREST ZONE OF PERNAMBUCO

Calheiros, Altanys Silva; Lira Junior, Mario de Andrade; Santos, Mércia Virgínia Ferreira; Lyra, Maria do Carmo Catanho Pereira

doi:10.1590/01000683rbcs20140393

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DIVISÃO 2 - PROCESSOS E PROPRIEDADES DO SOLO • Rev. Bras. Ciênc. Solo 39 (2) • Mar-Apr 2015 • https://doi.org/10.1590/01000683rbcs20140393 copy

SYMBIOTIC EFFECTIVENESS AND COMPETITIVENESS OF CALOPO RHIZOBIAL ISOLATES IN AN ARGISSOLO VERMELHO-AMARELO UNDER THREE VEGETATION COVERS IN THE DRY FOREST ZONE OF PERNAMBUCO

EFETIVIDADE SIMBIÓTICA E COMPETITIVIDADE DE RIZÓBIOS DE CALOPOGÔNIO ISOLADOS DE TRÊS COBERTURAS VEGETAIS, EM ARGISSOLO VERMELHO-AMARELO DA ZONA DA MATA PERNAMBUCANA

Authorship SCIMAGO INSTITUTIONS RANKINGS

Biological N fixation in forage legumes is an important alternative to reduce pasture degradation, and is strongly influenced by the inoculant symbiotic capability. This paper evaluates the effectiveness of Calopo (Calopogonium mucunoides) rhizobial isolated from soil under three vegetation covers of an Argissolo Vermelho-Amarelo of the Dry Forest Zone of Pernambuco. An experiment was conducted evaluating 25 isolates, aside from 5 uninoculated controls with 0; 309; 60; 90 and 120 kg ha^-1 N, and a treatment inoculated with the SEMIA 6152 strain. The first cut was performed 45 days after inoculation and a second and third cut after 45-day-intervals. Shoot N content was quantified at all cuts. Shoot dry mass was affected by N rates at all cuts. Shoot dry mass increased from the first to the second cut in inoculated plants. There was no difference between rhizobial isolates from the different plant covers for any of the variables. Most variables were significantly and positively correlated.

Calopogonium mucunoides; biological fixation; forage legumes

	Signal grass pastures	"Sabiá" woodlots	Atlantic Forest	Experimental soil
pH(H₂O)	5.61 ± 0.37	5.00 ± 0.38	4.86 ± 0.39	4.50
CO (g kg^-1)	5.26 ± 1.49	5.38 ± 0.39	6.75 ± 0.80	16.49
P (mg dm^-3)	23.33 ± 11.0	7.00 ± 0.00	5.67 ± 0.65	3.07
K⁺ (cmol_c dm^-3)	0.79 ± 0.44	0.34 ± 0.28	0.18 ± 0.05	0.25
Ca²⁺ (cmol_c dm^-3)	2.30 ± 0.28	2.38 ± 0.92	3.37 ± 0.45	1.50
Mg²⁺ (cmol_c dm^-3)	2.35 ± 0.26	2.15 ± 0.91	2.67 ± 0.56	1.00
Na⁺ (cmol_c dm^-3)	0.06 ± 0.04	0.11 ± 0.16	0.06 ± 0.03	0.05
Al³⁺ (cmol_c dm^-3)	0.13 ± 0.14	0.53 ± 0.46	0.38 ± 0.41	0.85
H+Al (cmol_c dm^-3)	6.27 ± 1.60	7.55 ± 1.30	7.55 ± 1.30	6.41
Sand (g kg^-1)	661 ± 42	657 ± 85	647 ± 73	645
Silt (g kg^-1)	26 ± 18	55 ± 18	55 ± 12	25
Clay (g kg^-1)	312 ± 60	288 ± 90	297 ± 84	330
Textural class	Clayey-sandy loam

Treatment	SDM	SNC	SNA	RE⁽¹⁾	END⁽²⁾
	g/plant	dag kg^-1	mg/plant	%	kg ha^-1
UFRPE Cm72	0.99 b	2.62 b	25.78 c	58.47 c	5.53 c
UFRPE Cm81	1.19 b	2.53 b	29.49 b	66.86 b	27.48 b
UFRPE Cm88	1.09 b	2.64 b	28.22 b	63.99 b	16.38 c
UFRPE Cm90	1.26 b	2.30 b	28.79 b	65.30 b	35.42 b
UFRPE Cm153	0.94 b	2.73 a	26.02 c	58.99 c	1.82 c
UFRPE Cm155	1.10 b	2.36 b	26.27 c	59.56 c	18.14 c
UFRPE Cm163	1.09 b	2.54 b	28.11 b	63.75 b	16.59 c
UFRPE Cm243	1.31 a	2.58 b	33.89 b	76.85 b	41.28 b
UFRPE Cm244	1.01 b	3.00 a	30.18 b	68.43 b	7.43 c
UFRPE Cm253	0.95 b	2.76 a	25.58 c	58.01 c	2.42 c
UFRPE Cm308	1.12 b	2.52 b	28.07 b	63.64 b	19.16 c
UFRPE Cm309	0.98 b	2.54 b	25.03 c	56.76 c	4.89 c
UFRPE Cm321	1.08 b	2.60 b	28.81 b	65.32 b	16.03 c
UFRPE Cm323	1.21 b	2.58 b	30.53 b	69.22 b	29.95 b
UFRPE Cm326	1.06 b	2.27 b	24.83 c	56.29 c	13.46 c
UFRPE Cm362	1.22 b	2.39 b	29.43 b	66.75 b	31.63 b
UFRPE Cm363	1.05 b	2.35 b	24.84 c	56.32 c	12.93 c
UFRPE Cm504	1.08 b	2.40 b	26.37 c	59.80 c	16.48 c
UFRPE Cm556	0.89 b	2.55 b	23.14 c	52.47 c	-
UFRPE Cm603	1.00 b	2.49 b	24.58 c	55.69 c	7.04 c
UFRPE Cm677	1.11 b	2.75 a	30.71 b	69.63 b	18.60 c
UFRPE Cm683	0.99 b	2.48 b	24.88 c	56.42 c	6.75 c
UFRPE Cm799	1.02 b	2.34 b	23.23 c	52.67 c	9.66 c
UFRPE Cm1302	1.06 b	2.16 b	22.89 c	51.91 c	12.32 c
UFRPE Cm1535	0.95 b	2.56 b	24.36 c	55.25 c	2.02 c
SEMIA 6152⁽³⁾	1.07 b	2.61 b	27.74 b	62.90 b	14.60 c
CV (%)	17.14	12.62	16.21	16.21

Treatment	SDM	RDM	NDM	SNC	SNA	RE⁽¹⁾	END⁽²⁾
	g/plant		mg/plant	dag/kg	mg/plant	%	kg/ha
UFRPE Cm72	1.74 a	0.98 b	97.00 a	2.92 a	50.92 a	104.03 a	51.82 b
UFRPE Cm81	1.43 a	0.89 b	80.50 a	2.64 a	38.04 b	77.88 b	24.01 c
UFRPE Cm88	0.78 b	0.51 b	34.33 a	2.54 a	19.80 b	40.53 b	-
UFRPE Cm90	0.90 b	0.44 b	36.00 a	2.84 a	25.39 b	51.98 b	-
UFRPE Cm153	0.95 b	0.41 b	56.67 a	2.27 a	21.55 b	44.11 b	-
UFRPE Cm155	0.99 b	0.79 b	35.56 a	2.96 a	29.36 b	60.09 b	-
UFRPE Cm163	1.68 a	0.73 b	105.50 a	2.74 a	45.90 a	93.97 a	42.69 b
UFRPE Cm243	1.27 b	0.83 b	79.50 a	2.74 a	35.27 b	72.20 b	8.38 c
UFRPE Cm244	1.18 b	0.70 b	59.50 a	2.86 a	33.52 b	68.61 b	1.90 c
UFRPE Cm253	1.17 b	0.57 b	72.34 a	2.67 a	31.56 b	64.60 b	2.89 c
UFRPE Cm308	1.29 b	0.69 b	69.50 a	2.73 a	35.24 b	72.14 b	9.86 c
UFRPE Cm309	1.15 b	0.65 b	62.25 a	2.99 a	34.26 b	70.12 b	0.58 c
UFRPE Cm321	1.48 a	0.62 b	92.00 a	2.74 a	40.03 b	81.95 b	23.84 c
UFRPE Cm323	1.76 a	0.77 b	85.00 a	2.77 a	48.65 a	99.59 a	52.59 b
UFRPE Cm326	1.04 b	0.64 b	54.50 a	2.83 a	29.23 b	59.84 b	-
UFRPE Cm362	1.28 b	0.83 b	63.50 a	2.83 a	36.27 b	74.25 b	9.09 c
UFRPE Cm363	1.34 b	0.65 b	101.00 a	2.75 a	36.79 b	75.32 b	13.91 c
UFRPE Cm504	1.16 b	0.70 b	47.67 a	2.60 a	29.22 b	59.82 b	2.46 c
UFRPE Cm556	1.55 a	0.67 b	92.00 a	2.45 a	38.27 b	78.34 b	31.24 c
UFRPE Cm603	1.37 b	0.44 b	89.00 a	2.79 a	38.14 b	78.08 b	16.06 c
UFRPE Cm677	1.96 a	0.91 b	133.25 a	2.98 a	58.68 a	120.12 a	91.09 a
UFRPE Cm683	1.09 b	0.52 b	80.00 a	2.71 a	29.57 b	60.52 b	-
UFRPE Cm799	1.32 b	0.77 b	95.17 a	2.36 a	30.92 b	63.28 b	12.42 c
UFRPE Cm1302	1.47 a	0.91 b	82.78 a	2.60 a	37.47 b	76.71 b	24.19 c
UFRPE Cm1535	0.89 b	0.53 b	45.83 a	2.70 a	24.37 b	49.88 b	-
SEMIA 6152⁽³⁾	1.26 b	0.97 b	45.00 a	2.54 a	32.26 b	66.03 b	8.12 c
CV (%)	13.33	30.05	54.31	11.71	14.84	14.84

Treatment	SDM	SNC	SNA	RE⁽¹⁾	END⁽²⁾
	g/plant	dag/kg	mg/plant	%	kg/ha
UFRPE Cm72	1.49 a	2.80 a	41.80 a	84.42 a	25.50 c
UFRPE Cm81	1.11 b	2.86 a	32.19 b	65.01 b	-
UFRPE Cm88	1.10 b	3.04 a	32.22 b	65.07 b	-
UFRPE Cm90	1.07 b	3.21 a	34.02 b	68.71 b	-
UFRPE Cm153	0.86 b	3.14 a	26.72 b	53.97 b	-
UFRPE Cm155	1.88 a	2.95 a	54.90 a	110.88 a	72.53 a
UFRPE Cm163	1.45 a	2.85 a	41.37 a	83.55 a	21.33 c
UFRPE Cm243	1.65 a	2.46 a	40.61 a	82.00 a	46.02 b
UFRPE Cm244	2.11 a	3.06 a	65.11 a	131.49 a	81.67 a
UFRPE Cm253	0.97 b	2.89 a	26.75 b	54.03 b	-
UFRPE Cm308	1.60 a	3.19 a	50.57 a	102.12 a	44.04 b
UFRPE Cm309	1.64 a	2.91 a	47.45 a	95.83 a	42.96 b
UFRPE Cm321	1.10 b	3.09 a	34.11 b	68.88 b	-
UFRPE Cm323	1.28 b	2.99 a	38.18 b	77.09 b	11.16 c
UFRPE Cm326	1.61 a	2.99 a	48.37 a	97.68 a	39.10 b
UFRPE Cm362	1.78 a	3.02 a	53.83 a	108.71 a	71.44 a
UFRPE Cm363	1.52 a	2.78 a	41.85 a	84.51 a	31.41 b
UFRPE Cm504	1.79 a	2.89 a	51.39 a	103.78 a	73.74 a
UFRPE Cm556	1.24 b	2.98 a	37.41 b	75.55 b	6.44 c
UFRPE Cm603	0.71 b	3.17 a	22.84 b	46.12 b	-
UFRPE Cm677	1.37 a	3.16 a	43.58 a	88.01 a	16.34 c
UFRPE Cm683	0.85 b	3.32 a	28.07 b	56.70 b	-
UFRPE Cm799	1.68 a	2.80 a	46.49 a	93.88 a	49.97 b
UFRPE Cm1302	1.80 a	2.60 a	46.37 a	93.65 a	60.20 a
UFRPE Cm1535	1.51 a	2.85 a	42.41 a	85.65 a	30.20 b
SEMIA 6152⁽³⁾	1.41 a	2.49 a	34.48 b	69.63 b	17.66 c
CV (%)	14.92	9.99	16.79	16.79

Treatment	SDM	SNA	RE⁽¹⁾
	g/plant	mg/plant	%
UFRPE Cm72	4.22 b	118.50 c	83.18 c
UFRPE Cm81	3.74 d	99.72 d	69.99 d
UFRPE Cm88	2.96 e	80.23 e	56.32 e
UFRPE Cm90	3.22 e	88.21 e	61.91 e
UFRPE Cm153	2.75 e	74.28 e	52.14 e
UFRPE Cm155	3.97 c	110.53 d	77.58 d
UFRPE Cm163	4.22 b	115.39 c	80.99 c
UFRPE Cm243	4.22 b	109.76 d	77.04 d
UFRPE Cm244	4.30 b	128.81 b	90.41 b
UFRPE Cm253	3.09 e	83.89 e	58.89 e
UFRPE Cm308	4.01 c	113.87 c	79.93 c
UFRPE Cm309	3.76 d	106.73 d	74.92 d
UFRPE Cm321	3.66 d	102.95 d	72.26 d
UFRPE Cm323	4.24 b	117.35 c	82.37 c
UFRPE Cm326	3.70 d	102.43 d	71.89 d
UFRPE Cm362	4.28 b	119.53 c	83.90 c
UFRPE Cm363	3.90 c	103.48 d	72.63 d
UFRPE Cm504	4.02 c	106.98 d	75.09 d
UFRPE Cm556	3.68 d	98.81 d	69.36 d
UFRPE Cm603	3.08 e	85.54 e	60.04 e
UFRPE Cm677	4.45 b	132.96 b	93.33 b
UFRPE Cm683	2.93 e	82.52 e	57.92 e
UFRPE Cm799	4.01 c	100.62 d	70.63 d
UFRPE Cm1302	4.33 b	106.74 d	74.92 d
UFRPE Cm1535	3.34 e	91.14 e	63.97 e
SEMIA 6152	3.73 d	94.48 d	66.31 d
CV (%)	7.44	7.88	7.88

	First cut				Second cut				Third cut
	SNC	SNA	RE	END	SNC	SNA	RE	END	SNC	SNA	RE	END	RDM	NDM
SDM	0.18*	0.80*	0.80*	0.93*	-0.32*	0.93*	0.93*	0.95*	0.08^ns	0.92*	0.92*	0.97*	0.60*	0.65*
SNC	-	0.72*	0.72*	0.24*	-	0.04^ns	0.04^ns	-0.31*	-	0.45*	0.45*	0.10^ns	0.05^ns	0.03^ns
SNA	-	-	1.00*	0.80*	-	-	1.00*	0.87*	-	-	1.00*	0.91*	0.54*	0.59*
RE	-	-	-	0.80*	-	-	-	0.87*	-	-	-	0.91*	0.54*	0.59*
END	-	-	-	-	-	-	-	-	-	-	-	-	0.67*	0.61*
RDM	-	-	-	-	-	-	-	-	-	-	-	-	-	0.26*

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[1] * Corresponding author. E-mail: mario.lira@depa.ufrpe.br