Field Performance of Eucalyptus Hybrids at Planalto da Conquista, Bahia, Brazil

Fernandes, Jamily da Silva; Conceição Júnior, Valdemiro; Barreto-Garcia, Patrícia Anjos Bittencourt

doi:10.1590/2179-8087.059416

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Original Article, Silviculture • Floresta Ambient. 25 (2) • 2018 • https://doi.org/10.1590/2179-8087.059416 copy

Field Performance of Eucalyptus Hybrids at Planalto da Conquista, Bahia, Brazil

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The present study was carried out with the objective of evaluating the field performance of six Eucalyptus clones, using seed-produced Eucalyptus urophylla as a reference. The experiment was conducted in the city of Vitória da Conquista, Bahia, Brazil. The plants were monitored monthly with diameter at ground level and height measurements taken up to nine months after planting. Diameter at breast height (DBH) and height measurements, as well as the biomass of all tree components and stem volumes were obtained 12 months after planting. VM058 and I-144 were the only clones that showed survival rates below 70%. Nevertheless, up to the age of 12 months and similar to the seed-produced E. urophylla , the VM058 clone was the genetic material that presented the most satisfactory production given the edaphoclimatic conditions of Vitória da Conquista, Bahia, Brazil.

Keywords:
biomass; productive potential; volume

Parameters	0-20	20-40
pH (H₂O)⁽1⁾	4.4	4.4
P (mg dm^-3)	2	1
K (cmolcdm^-3)	0.13	0.08
Ca (cmolcdm^-3)	0.6	0.3
Mg (cmolc dm ^-3)	0.5	0.2
Al (cmolcdm^-3)	1.2	1.3
H (cmolcdm^-3)	4.8	4
Na (cmolcdm^-3)	0	0.06
S.B (cmolcdm^-3)	1.2	0.6
t (cmolcdm^-3)	2.4	1.9
T (cmolcdm^-3)	7.2	5.9
V (%)	17	11
m (%)	49	67
Sand (g kg^-1)	630	630
Silt (g kg^-1)	20	30
Clay (g kg^-1)	350	340

Clones	Species
I-144	Eucalyptus urophylla
1355	E. urophylla x E. grandis
1404	Eucalyptus urophylla
1296	E. urophylla x E. grandis
1249	E.urophylla x E. grandis
VM058	E. camaldulensis x E. tereticornis

Treatment	Survival (%)
E. urophylla	92
I-144	56
1355	77
1404	92
1296	90
1249	85
VM058	67

Treatment	Equation	SE ⁽ ¹ (1) SE = Standard error of the estimate; R2 = Adjusted coefficient of determination; ⁾	R²
*E. urophylla*	H= 0.2742 - 0.0004T+ 0.00000376T²	0.07	99.39 ^* * p < 0.0001.
*E. urophylla*	D= - 0.0104 + 0.0091T + 0.00000365T²	0.09	99.69 ^* * p < 0.0001.
I-144	H= 0.4970 - 0.0053T + 0.00000461T²	0.08	98.81 ^* * p < 0.0001.
I-144	D = 0.2747 - 0.0012T + 0.00000598T²	0.14	99.05 ^* * p < 0.0001.
1355	H= 0.4533 - 0.0013T + 0.00000314T²	0.07	98.88 ^* * p < 0.0001.
1355	D= -0.0870 + 0.0110T + 0.00000185T²	0.26	96.56 ^* * p < 0.0001.
1404	H = 0.3822 - 0.0033T + 0.00000389T²	0.04	99.69 ^* * p < 0.0001.
1404	D= 0.1252 + 0.0022T + 0.00000478T²	0.12	99.21 ^* * p < 0.0001.
1296	H= 0.4240 - 0.0012T + 0.00000310T²	0.05	99.38 ^* * p < 0.0001.
1296	D= 0.1725 + 0.0048T + 0.00000401T²	0.09	99.58 ^* * p < 0.0001.
1249	H= 0.3431 - 0.0013T + 0.00000323T²	0.05	99.51 ^* * p < 0.0001.
1249	D= 0.0945 + 0.0037T + 0.00000506T²	0.18	98.41 ^* * p < 0.0001.
VM058	H= 0.3644 - 0.0026T + 0.00000460T²	0.08	99.34 ^* * p < 0.0001.
VM058	D= 0.0804 + 0.0037T + 0.00000506T²	0.06	99.82 ^* * p < 0.0001.

Month	Genetic material
Month	*E. urophylla*	I-144	1355	1404	1296		1249	VM058
DIAMETER (cm)
1	0.26 a⁽¹ (1) Means followed by the same letters in the line do not differ by Tukey test at 5% probability. ⁾	0.30 a	0.36 a	0.30 a	0.35 a		0.30 a	0.22 a
2	0.79 a	0.53 a	0.69 a	0.46 a	0.68 a		0.43 a	0.48 a
3	1.07 a	0.62 a	0.87 a	0.75 a	0.90 a		0.65 a	0.74 a
4	1.54 a	0.79 b	1.17 ab	0.96 ab	1.19 ab		0.98 ab	1.15 ab
5	2.07 a	1.37 b	1.72 ab	1.43 ab	1.76 ab		1.65 ab	1.61 ab
6	2.93 a	2.06 b	2.38 ab	2.18 b	2.39 ab		2.17 b	2.28 b
7	3.57 a	2.76 b	3.09 ab	2.83 b	3.03 ab		2.89 b	2.95 ab
8	4.27 a	3.53 b	3.55 b	3.46 b	3.70 ab		3.64 ab	3.84 ab
9	5.07 a	4.19 b	4.16 b	4.06 b	4.29 b		4.06 b	4.51 ab
HEIGHT (m)
1	0.24 a	0.31 a	0.39 a	0.29 a		0.39 a	0.31 a		0.26 a
2	0.47 a	0.43 a	0.57 a	0.36 a		0.52 a	0.42 a		0.45 a
3	0.57 a	0.44 a	0.63 a	0.42 a		0.59 a	0.50 a		0.53 a
4	0.75 a	0.51 a	0.74 a	0.54 a		0.67 a	0.58 a		0.73 a
5	1.00 a	0.71 a	0.89 a	0.71 a		0.88 a	0.84 a		0.98 a
6	1.43 a	0.94 c	1.20 abc	1.05 bc		1.23 abc	1.15 abc		1.37 ab
7	1.80 a	1.44 bc	1.61 abc	1.38 c		1.56 abc	1.57 abc		1.74 ab
8	2.46 a	1.99 b	2.05 b	1.88 b		1.97 b	1.88 b		2.50 a
9	2.87 a	2.38 b	2.33 b	2.30 b		2.30 b	2.32 b		2.99 a

Genetic material	Biomass (kg tree^-1)					H (m)	DBH (cm)	Volume (m³)
Genetic material	Leaves	Branches	Stem	Roots	Total	H (m)	DBH (cm)	Volume (m³)
*E. urophylla*	3.8572 a⁽¹ (1) Means followed by the same letter in the line do not differ by the Tukey test at 5% significance. H = Height; DBH = Diameter at breast height; Volume = Stem volume. ⁾	1.9895 a	3.8906 a	2.4349 a	12.1723 a	3.6133 a	3.1933 a	0.0053 a
I-144	2.8324 a	1.4081 a	1.4618 ab	1.2176 b	6.9199 ab	3.1567 a	2.9433 a	0.0034 ab
1355	2.9926 a	2.2793 a	1.3521 b	1.6112 ab	8.2352 ab	3.2633 a	2.6000 a	0.0023 b
1404	2.6803 a	1.3661 a	2.1105 ab	1.1104 b	7.2673 ab	3.4367 a	2.9433 a	0.0042 ab
1296	3.2750 a	2.2654 a	1.3297 b	1.2069 b	8.0770 ab	3.7733 a	2.8200 a	0.0028 b
1249	2.2942 a	0.9049 a	1.0776 b	0.9126 b	5.1894 b	3.3267 a	2.3933 a	0.0024 b
VM058	2.4126 a	1.6363 a	2.8608 ab	1.4413 ab	8.3510 ab	3.7167 a	3.0533 a	0.0052 a

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[1] *Patrícia Anjos Bittencourt Barreto-GarciaDepartamento de Engenharia Agrícola e Solos, Universidade Estadual do Sudoeste da Bahia – UESB, Estrada do Bem Querer, Km 04, CP 95, CEP 45031-300, Vitória da Conquista, BA, Brasil e-mail: patriciabarreto@uesb.edu.br