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BALAKAT (Ziziphus talanai)
Trade Name
Balakat
Scientific Name
Ziziphus talanai (Blanco) Merr.
Family
RHAMNACEAE
Common Names
Blakat; Balakat (Philippines); Talanai (Philippines); Aligamen (Philippines)
Scientific Name Synonyms
Ziziphus zonulata Blanco; Ziziphus arborea Merr.
Description Of The Tree
Botanical Description
It is large tree up to 30 m and 100 cm in diameter. The bole is long and cylindrical.
Natural Habitat
Ziziphus talanai is a timber species endemic to the Philippines. It is found scattered in lowland primary or secondary forests, up to 1,000 m of altitude. Rates of habitat loss through logging and shifting cultivation have led to considerable population d
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Colored deposits in heartwood vessels. Occasionally vestured pits. Vessels per mm2 5 to 20. Simple perforation plates. Occasionally multiple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits Axial parenchyma in marginal or in seemingly marginal bands. Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally axial parenchyma aliform. Axial parenchyma confl Rays more than 10 per mm (abundant). Occasionally rays exclusively uniseriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally body ray cells procumbent with one row of upright and/or Fibers very thick walled. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is not sharply defined from heartwood, which is light red or reddish-brown.
Grain
The grain is straight, occasionally wavy.
Texture
Texture is reported to be fine to medium.
Luster
It is reported to be high in luster.
Natural Durability
The heartwood is susceptible to dry-wood termites.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Resistance To Impregnation
It is easy to treat with preservatives.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.62
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.68
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.0
Total shrinkage Radial (Saturated to 0%MC) (%)
4.0
Drying Defects
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of checks and distortions. Kiln Schedules: The kiln schedule has been tested.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.8
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
931
Stiffness (MOE) 12%MC (kgf/cm²)
97378
Compression parallel to fiber 12%MC (kgf/cm²)
463
Compression perpendicular to fiber 12%MC (kgf/cm²)
85
Shear strength radial 12%MC (kgf/cm²)
132
Janka hardness (side) 12%MC (kgf)
521
Janka hardness (end grain) 12%MC (kgf)
711
Workability
Sawing
Sawmilling of this species is reportedly easy.
Rotary Veneer Cutting
This species is reported to have good characteristics for lamination.
Sliced Veneer
This species is reported to have good characteristics for lamination.
Machining
It is easy to machine.
Planing
Planing operations are rather easy.
Moulding
Molding of this species is reported to be easy.
Turning
30
Boring
Boring is reported to be easy.
Mortising
Mortising of this species is reported to be easy.
Finishing
The response of this species in finishing is good to fair.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, SPORTS, TOOLS, tool handles, PACKING
General Housing
- 10 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Turning
- 30 - Embassy of Honduras in Japan
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
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