Welcome to the26 IUFRO World CongressthStockholm, Sweden, 23–29 June 2024

Heartwood production and density of 22-year-old
teakwood from fast-growth plantations: a comparative
study across three locations in Brazil
Bárbara Pereira1Jackeline Silva
Leandro Souza
Tielis Azevedo
Aylson Oliveira
Gabriel Pereira2
Mario Tommasiello Fo
1 Federal University of Mato Grosso;
2 ESALQ/University of São PauloIntroduction

Brazil - 76 thousand
hectares in 2022
78% Mato Grosso state
6% Teak Plantations – Latin America(261- 413 thousand hectares)

Introduction

1Mato Grosso: 63% of the area issuitable or suitable with restrictions
for teak plantations

2Municipalities

3Unsuitable
Restricted
Suitable with restriction
Suitable

Geographic Coordinate System:

Climatic, edaphic, and physiografic zoning forT. grandis in Mato Grosso, Brazil (Medeiros, 2016).

1 – Suitable with restriction
2 – Suitable
3 – RestrictedJustificative and Objectives•

The teak plantations are typically established by private investors and
20 and 25 years rotations•

How does the planting location affect the properties of the wood?

•What are the characteristics of teak wood from final harvest in
Brazilian plantations?

•This study aimed to compare the diameter, heartwood percentage,and wood density of 22-year-old Tectona grandis trees from threeplanting locations in Mato Grosso, Brazil.

Precipitation (mm)Material and Methods

Dec

Nov

Oct

Sep

Aug

Jul

JunMayAprMarJan

Study Locations

Feb

500
400
300
200
100
0

Average temperature (°C)

SL – St. Ant.
Leverger

AFNM

SL

Loc.
AFNM
SL

Soil Atributtes (0-20 cm)
CaT
Typecmolc.dm-3
3.9
7.8
Clay
5.7
12.8
Sand
0.74.3
Sand

Calcium (Ca); Total cation exchange capacity (T)Dec

NovOct

SepAugJulJunMay

AprMarJan

NM – Nova Maringá

Feb

AF – Alta Floresta

3028262422

Anual
precip.
(mm)
2313
2284
1567

Material and Methods
Sampling•••

5 trees per location
Mean diameter
22-year-old seminal plantations
X-Ray Microdensitometry

11.5 m
9.2 m
6.9 m
4.6 m
2.3 m0m••••

Total/ Heartwood diameter
Heartwood (%)
Growth rings width
Wood density

Results

4080
Heartwood (%)

Heartwood diameter (cm)Heartwood – Diameter and Percentage

30
20
10070
60
50
40

0

2.3

4.6

6.9

9.2

11.502.3

Height (m)4.6
6.9Height (m)

AFNM
SL0m

2.3 m

4.6 m

6.9 m

9.2 m

11.5 m

9.2

11.5

Results
Growth rings and wood density

Nova Maringá (NM) – Height: 2.3m

Growth rings• Min.: 1.33 mm• Max.: 19.88 mm• Mean: 5.96 mm
Wood density• Min.: 0.47 g.cm-³• Max.: 0.70 g.cm-³• Mean: 0.61 g.cm-³mm

Results
Growth rings and wood density

Alta Floresta (AF) – Height: 2.3m

Growth rings• Min.: 1.62 mm• Max.: 19.68 mm• Mean: 6.01 mm
Wood density• Min.: 0.48 g.cm-³• Max.: 0.64 g.cm-³• Mean: 0.56 g.cm-³mm

Results
Growth rings and wood density

Sto Antônio Leverger (SL) – Height: 2.3m

Growth rings• Min.: 1.81 mm• Max.: 10.20 mm• Mean: 4.39 mm
Wood density• Min.: 0.33 g.cm-³• Max.: 0.95 g.cm-³• Mean: 0.65 g.cm-³mm

Results
Profile of longitudinal and radial variation of X-ray wood density
NMAFSL
0.85
0.80
0.75
0.70
0.65
0.55
0.50
0.45

Cambial age (years)

20 cm

19 cm

15 cm

Conclusions•The heartwood production is proportional to the diameter growth.

•The growth ring width is constant from the 10th ring onwards.

•The average density ranged from 550 to 650 kg.m-³.

•Wood density is higher at the base and apex, and lower near the pith,increasing towards the bark.

• Growth is not directly associated with wood density. Wood from SL ismore homogeneous and denser. NM has higher growth with intermediate
wood density. Wood from AF has a lower mean wood density.

References
ANISH, M. C.; ANOOP, E. V.; VISHNU, R.; SREEJITH, B.; JIJEESH, C. M. Effect of growth rate on wood quality ofteak (Tectona grandis L. f.): a comparative study of teak grown under differing site quality conditions. Journal of theIndian Academy of Wood Science, 2015.
CURVO, K. R.; SILVA, G. A. O.; CASTRO, V. R.; GAVA, F. H. et al. Heartwood proportion and density of Tectonagrandis L.f. wood from Brazilian fast-growing plantations at different ages. European Journal of Wood and WoodProducts, 2024.
GAITAN-ALVAREZ, J.; MOYA, R.; BERROCAL, A. The use of X-ray densitometry to evaluate the wood density profileof Tectona grandis trees growing in fast-growth plantations. Dendrochronologia, 2019.
KOLLERT, W; KLEINE, M. (Ed.). The Global Teak Study: Analysis, Evaluation and Future Potential of Teak Resources.
IUFRO World Series, volume 36. Vienna: International Union of Forest Research Organizations, 2017.
MEDEIROS, R. A. Productive potential, management, and experimentation in Tectona grandis L.f. plantations in the stateof Mato Grosso. 2016. 198 p. Thesis (Forest Science) - Federal University of Viçosa, Brazil.

Heartwood production and density of 22-year-old teakwood from fast-growth plantations: acomparative study across three locations in Brazil

Acknowledgment

Tack!
Besök oss!
Thank you!
Visit us!

Bárbara Pereira – barbara.pereira@ufmt.br
Jackeline Silva – jackecichoski@gmail.com
Leandro Souza – leandrocarbonato@hotmail.com
Tielis Azevedo – tielislucas@hotmail.com
Aylson Oliveira – aylson.oliveira@ufmt.br
Gabriel Pereira – gabriel_assispereira@hotmail.com
Mario Tommasiello Fo – mtomazel@usp.br

Chapada dos Guimarães, MT, Brazil