Crescimento, nutrição e eficiência no transporte, absorção e uso de nutrientes no mogno africano

Souza, Aline das Graças; Smiderle, Oscar José; Chagas, Edvan Alves; Alves, Márcia Souza; Fagundes, Paulo Renato de Oliveira

Aline das Graças Souza ^**Author for correspondence

Programa de Pós-Graduação em Agronomia, Departamento de Ciências Vegetais e Ambientais, Universidade Federal da Paraíba/UFPB, Campus II Areia-PB, Brasil, alineufla@hotmail.com.

https://orcid.org/0000-0001-8158-5933

Oscar José Smiderle

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Roraima, Boa Vista-RR, Brasil, oscar.smiderle@embrapa.br, edvan.chagas@embrapa.br - Bolsistas de Produtividade em Pesquisa do CNPq

https://orcid.org/0000-0001-6692-1329

Edvan Alves Chagas

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Roraima, Boa Vista-RR, Brasil, oscar.smiderle@embrapa.br, edvan.chagas@embrapa.br - Bolsistas de Produtividade em Pesquisa do CNPq

https://orcid.org/0000-0001-8604-7819

Márcia Souza Alves

Programa de Pós-Graduação em Agronomia, Universidade Federal de Roraima, Boa Vista-RR, Brasil, marciasouza@hotmail.com, pro.fagundes@yahoo.com.br.

https://orcid.org/0000-0002-0623-601X

Paulo Renato de Oliveira Fagundes

Programa de Pós-Graduação em Agronomia, Universidade Federal de Roraima, Boa Vista-RR, Brasil, marciasouza@hotmail.com, pro.fagundes@yahoo.com.br.

https://orcid.org/0000-0001-8348-6269

*Author for correspondence

pH

Sorption complex⁽²⁾ (2) pH in water (1:2.5); Ca2+, Mg2+ e Al3+: KCl extractor 1 mol L-1; K+ and P: Mehlich-1 extractor; H+Al: SMP extractor; OM.: organic matter - oxidation Na2Cr2O7 4N + H2SO4 10N; S: sum of exchangeable bases; t: effective cation exchange capacity (CTC); T: CTC at pH 7.0; V: base saturation index; m: aluminium saturation index.

V

M

P

OM

Ca²⁺

Mg²⁺

K⁺

Al³⁺

H+Al

S

t

T

---------------------------- cmol_c dm^-3 ------------------------------

----- % ------

mg dm^-3

g kg^-1

5.8

10.5

7.9

1.6

-

2.08

20

22

90.6

-

176.77

69.2

Micronutrients⁽³⁾ (3) Zn, Fe, Mn e Cu: Mehlich-1 extractor; B: hot water extractor; S: monocalcium phosphate extractor in acetic acid

Granulometry

Zn

Fe

Mn

Cu

B

S

Clay

Silt

Sand

---------------------- mg dm^-3 ----------------------

---------g kg^-1------------

ORG

19.5

27.08

124

0.3

0.33

19.0

170

290

540

Composition	N-NO_3-	N-NH⁴⁺	P	K	Ca	Mg	S	Fe	EC	[Ions]	Ionic strength
	mg L^-1								Ds m^-1	mmol L^-1
Nutrient Solution	174.0	24.0	39.0	183.0	142.0	38.0	52.0	32.0	1.74	26.92	21.94

Species	H		D		SDW		RDW
Species	WS^* ***** WS: with nutrient solution; NS: no nutritional solution	NS^* ***** WS: with nutrient solution; NS: no nutritional solution	WS	NS	WS	NS	WS	NS
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	47.9bB*	67.7 bA	11.3 bA	8.07 bB	25.9 bA	18.8 bB	7.8 bA	5.3 bB
T2^ T1: Khaya ivorensis - T2: Khaya senegalensis;	91.0 aA	74.2 aB	17.9 aA	13.3 aB	52.3 aA	27.8 aB	12.4 aA	5.8 aB
CV%	7.8	4.7	5.4	10.1
	H/D		TDW		DQI
	WS	NS	WS	NS	WS	NS
T1	5.9 bA	5.4 bA	33.7 aA	24.1 aB	5.4 aA	3.8 aB
T2	5.5 aA	5.3 aA	33.6 aA	5.5 bB	6.8 aA	3.3 aB
CV%	0.9	13.7	5.6

	Shoots
	N		P		K
Species	WS^* ***** WS: with nutrient solution; NS: no nutritional solution	NS^* ***** WS: with nutrient solution; NS: no nutritional solution	WS	NS	WS	NS
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	54.5 bA^* * Mean values followed by the same lowercase letter in a column and uppercase letter on a line do not differ by Tukey's test (p≤0.05).	40.9 bB	6.6 bA	5.54 bA	35.4 bA	31.47 bA
T2^ T1: Khaya ivorensis - T2: Khaya senegalensis;	94.7 aA	55.2 aB	15.5 aA	10.0 aB	74.8 aA	43.2 aB
CV%	9.88		11.22		17.62
	Ca		Mg		S
T1	35.05 aA	21.26 aB	6.3 aA	6.2 aA	4.3 aA	2.3 aA
T2	38.7 aA	18.26 aB	8.6 aA	5.2 aB	7.5 aA	2.6 aB
CV%	12.01		14.95		9.76
	Root system
	N		P		K
Species	WS	NS	WS	NS	WS	NS
T1	7.54 bA	6.00 aA	2.01 bA	1.02 aA	8.64 aA	9.18 aA
T2	12.12 aA	6.79 aB	7.42 aA	2.38 aB	13.61 aA	7.69 aB
CV%	7.66		13.2		9.7
	Ca		Mg		S
T1	2.99 bA	2.486 aA	1.36 aA	0.91 aA	0.58 aA	0.69 aA
T2	12.37 aA	3.52 aB	3.92 aA	1.19 aB	0.74 aA	0.36 aA
CV%	13.2		7.6		4.5

	Shoots
	B		Cu		Fe
Species	WS^* ***** WS: with nutrient solution; NS: no nutritional solution	NS	WS	NS	WS	NS
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	134.8 bA^* * Mean values followed by the same lowercase letter in a column and uppercase letter on a line, do not differ by Tukey's test (p≤0.05).	52.9 bA	57.1 aA	32.4 bB	407.8 bA	194.9 bB
T2	288.0 aA	63.9 aB	72.7 bA	51.0 aB	682.1 aA	287.0 aB
CV%	15.5		10.8		9.3
	Mn		Zn
T1	75.6 bA	45.6 bB	41.0 bA	22.5 bB
T2	107.0 aA	65.9 aB	69.3 aA	37.9 aB
CV%	10.5		9.8
	Root system
	B		Cu		Fe
Species	WS	NS	WS	NS	WS	NS
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	73.2 bA	42.3 bB	58.6 bA	33.4 bB	135.3 bA	53.9 bB
T2	96.8 aA	62.9 aB	73.2 aA	55.4 aB	190.6 aA	89.2 aB
CV%	10.8		12.3		13.9
	Mn		Zn
T1	41.9 bA	25.3 bB	61.1 aA	46.9 aB
T2	68.7 aA	36.3 aB	39.3 bA	24.9 bB
CV%	9.1	10.8

	Uptake efficiency
	N		P		K
Species	WS^* ***** WS: with nutrient solution; NS: no nutritional solution;	NS	WS	NS	WS	NS
	mg nutrient/g root dry weight
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	8.2 bA^* * Mean values followed by the same lowercase letter in a column and uppercase letter on a line, do not differ by Tukey's test (p≤0.05).	8.5 aA	2.1 bA	1.8 bA	5.1 bA	4.1 aA
T2	10.6 aA	7.8 aB	6.3 aA	4.3 aB	8.7 aA	7.4 bA
^** ****** CV (%) = coefficient of variation as a percentage CV.%	9.6		4.7		3.9
	Ca		Mg		S
T1	4.1 bA	3.7 bA	1.10 bA	0.9 bA	0.6 bA	0.5 bA
T2	12.7 aA	9.5 aB	5.6 aA	7.7 aB	8.3 aA	4.8 aB
CV.%	8.5	12.9	7.4
	Transport efficiency
	-----------------------------------------------------%-----------------------------------------------------
	N		P		K
	WS	NS	WS	NS	WS	NS
T1	89.0 aA	88.6 aA	80.7 bA	67.6 bB	80.4 bA	76.6 bB
T2	87.8 bA	87.2 aA	84.3 aA	76.8 aB	84.4 aA	80.3 aB
CV.%	10.5		12.1		13.2
	Ca		Mg		S
T1	83.8 bA	75.8 bB	81.3 bA	72.8 bB	91.1 bA	70.2 bB
T2	92.1 aA	86.5 aB	87.2 aA	82.2 aB	98.0 aA	86.3 aB
CV.%	9.1		10.8		13.92
	Use efficiency
	(dry weight)² g/mg accumulated nutrient
	N		P		K
	WS	NS	WS	NS	WS	NS
T1	0.2 bA	0.2 bA	1.4 bA	0.7 bB	0.3 bA	0.2 bA
T2	1.1 aA	1.1 aA	7.9 aA	6.1 aB	1.5 aA	1.2 aA
CV %	6.23		6.89		5.01
	Ca		Mg		S
T1	0.7 bA	0.5 bA	2.1 bA	1.4 bA	4.6 bA	2.1 bB
T2	2.7 aA	1.2 aB	8.7 aA	5.7 aB	16.8 aA	10.7 aB
CV %	4.12		7.41		7.41

	Uptake efficiency^* * Mean values followed by the same lowercase letter in a column and uppercase letter on a line, do not differ by Tukey's test (p≤0.05).
	mg nutrient/g root dry weight
	B		Cu		Fe
Species	WS^* ***** WS: with nutrient solution; NS: no nutritient solution;	NS	WS	NS	WS	NS
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	2.86 bA	2.25 bA	1.97 bA	1.97 bA	2.80 bA	2.80 bA
T2	28.14 aA	27.65 aA	21.3 aA	10.2 aB	17.59 aA	14.11 aB
^** ****** CV (%) = coefficient of variation as a percentage CV.%	8.9		7.7		10.9
	Mn		Zn
T1	1.67 bA	1.48 bA	4.62 bA	4.01 bA
T2	10.80 aA	8.71 aB	57.8 aA	53.6 aB
CV.%	9.3		13.8
	Transport efficiency^ T1: Khaya ivorensis - T2: Khaya senegalensis;
	-----------------------------------------------------%-----------------------------------------------------
	B	Cu	Fe
	WS	NS	WS	NS	WS	NS
T1^ T1: Khaya ivorensis - T2: Khaya senegalensis;	65.09 bA	55.57 bB	49.3 bA	49.2 bA	64.3 bA	64.3 bA
T2	82.07 aA	39.70 aB	56.6 aA	41.0 aB	64.4 aA	60.8 aB
CV.%	14.1		13.8		13.7
	Mn		Zn
T1	40.2 bA	32.5 bB	78.4 bA	67.0 bB
T2	63.8 aA	60.3 aB	94.5 aA	92.1 aB
CV.%	14.1		13.8
	Use efficiency^* ***** WS: with nutrient solution; NS: no nutritient solution;
	(dry weight)² g/mg accumulated nutrient
	B		Cu		Fe
	WS	NS	WS	NS	WS	NS
T1	0.07 bA	0.06 bA	0.19 bA	0.08 bB	0.14 bA	0.10 bB
T2	0.53 aA	0.31 aB	0.78 aA	0.53 aB	0.68 aA	0.53 aB
CV.%	6.23		6.89		5.01
	Mn		Zn
T1	0.24bA		0.17 bB
T2	0.69aA		0.60 aB
CV.%	4.12		7.41

[1] *Author for correspondence

Brasil

Brasil

Crescimento, nutrição e eficiência no transporte, absorção e uso de nutrientes no mogno africano

RESUMO