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(*) INTA : National Agriculture & Livestock Reserach Institute Entre Ríos province - ARGENTINE

IUFRO 2007 D5 Conference - Taipei. Physical and mechanical properties of Eucalyptus grandis x E. tereticornis hybrid grown in Argentina. Ing. Ftal. Martín Sánchez Acosta , et al. INTA (*). (*) INTA : National Agriculture & Livestock Reserach Institute Entre Ríos province - ARGENTINE.

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(*) INTA : National Agriculture & Livestock Reserach Institute Entre Ríos province - ARGENTINE

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  1. IUFRO 2007 D5 Conference - Taipei Physical and mechanical properties of Eucalyptus grandis x E. tereticornis hybrid grown in Argentina Ing. Ftal. Martín Sánchez Acosta, et al. INTA (*) (*) INTA : National Agriculture & Livestock Reserach Institute Entre Ríos province - ARGENTINE

  2. Entre Ríos Concordia INTA :Experiment Station Concordia – Entre Ríos

  3. Objetives : • Main: • Determination of the wood´s properties of the “new promissory hybrid E. grandis x E tereticornis” , planted in Argentine • Complementary: • Comparisson with E. grandis & E. tereticornis • - Basic information for genetic breeding

  4. E grandis. 1.2 years old - 10 meters high.-

  5. E grandis with irrigation: 6 months old -Argentina

  6. Material : • - Trees from genetic assays • E. grandis x E tereticornis • References E. grandis (Argentine) • References E. tereticornis (Argentine) • (Tinto, Labate, Hernitz) • - Age : 10 years • dbh : 34 cm • heigth : 30 m • IMA : 40 m3/ha/yr aprox.

  7. Metod: Standars : ASTM (EEUU) – IRAM (ARG)

  8. Results by Properties

  9. Density (14% m.c) Kg/dm3 1000 900 850 800 700 690 18 n.s. 600 500 490 400 300 200 100 grandis Hybrid tereticornis

  10. Static bending (Modulus of elasticity) 25000 20000 15000 10000 5000 N 22000 19500 15 n.s. 11000 grandis Kendall S. Africa

  11. Janka Hardness (tg) 6500 6000 5500 5000 4500 4000 3500 3000 2500 2000 N 60 48 Ns 18 30 grandis hybrid teretricornis

  12. Removal of nails (tg) 1300 1200 1000 900 800 700 600 500 400 300 N ? 1100 NS 18 707 grandis hybrid teretricornis

  13. Shrinkage (tg. green to 0%) 24 22 20 18 16 14 12 10 8 6 % NS 19 17.0 13.4 11.0 grandis hybrid teretricornis

  14. T/R relationship Ns : 97 CV: 14 % 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 T/R 2.0 2.1 1.9 1.6 grandis hybrid teretricornis

  15. Relative situation compared with E. grandis 100 90 80 70 60 50 40 30 20 10 % 75 50 40 15 40 Density Hardness MOE Shrinkage T/R

  16. Aptitude - Structural uses(construction - poles) - Structural uses(plank m., pallets – boxes) - Furnitures (semi-heavy weight) - Gral. carpentry - joinery - Flooring(better than grandis) - Laminated panels(plywood – LVL)

  17. Conclussions: • - The density is intermediate, close to teret. • In general, the mechanical values are higher than grandis and lower than tereticornis • - Better values of estability t/r shrinkage • - The color is rose – red , intermediate between grandis & tereticornis • The values are good for floors, and structural and general uses (furniture – houses, carpentry, etc) • good relationship density/resistance

  18. Acknowledgements - An especial gratefulness to the Symposium´s Organization commite by the finnancial assistance

  19. Edge glue panels –grandis

  20. E. tereticornis

  21. grandis x tereticornis EGP : hardness test

  22. Red euc floors

  23. JARRAH - Australia

  24. Red eucalypts

  25. Thermal water swimming pool- Red euc- Uruguay

  26. FREE ... ELECTRONIC BULLETIN NOVEDADES FORESTALES INTA CONCORDIA In spanish ....... martinsa@concordia.com.ar www.inta.gov.ar/concordia

  27. Iguazú Falls – WE WAIT FOR YOU !!!! Muchas gracias – Thank you - 謝謝

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