Gmelina (Gmelina arborea)
Also known as: Gumhar · White teak · Yemane (South Asian trade name) · Gmelina (Filipino common usage)
Definition
Gmelina (Gmelina arborea), also called gumhar or white teak, is a fast-growing deciduous tree in the mint family (Lamiaceae) native to South and Southeast Asia and widely planted in the Philippines as a plantation species. Valued for its workable yellowish timber, gmelina appears in reforestation projects, agroforestry systems, and community tree farms from Luzon to Mindanao, where it produces harvestable wood on roughly 10–15 year rotations. (Wikipedia)
Identities
| Source Type | Identity |
|---|---|
| Wikipedia | Gmelina arborea |
| Wikidata | Q311345 |
| DBpedia | N/A |
| ProductOntology | N/A |
| Wiktionary | N/A |
| Library of Congress Subject Headings (LCSH) | Gmelina arborea |
| MeSH | N/A |
| NCBI Taxonomy | Gmelina arborea |
| AGROVOC | Gmelina arborea |
| Google Scholar | Gmelina arborea plantation Philippines timber agroforestry growth yield |
| ConceptNet | tree |
| OpenCyc | N/A |
Also Known As
- Gumhar
- White teak
- Yemane (South Asian trade name)
- Gmelina (Filipino common usage)
Examples and Analogies
- The jack-of-all-trades plank: Gmelina wood is soft enough to carve easily yet firm enough for furniture, siding, and mouldings — playing the role in farm forestry that general-purpose pine plays in temperate countries.
- A ten-year savings account: For upland farmers, a gmelina stand is a standing bank deposit: planted once, thinned along the way, and cashed as poles and sawlogs little more than a decade later.
Usage Scenarios
1. Plantation and Community Forestry
Government reforestation and private tree farms plant gmelina for fast wood volume, especially in Cagayan Valley, Mindanao, and degraded grassland areas.
2. Agroforestry and Fuelwood
Its leaves decompose into soil-enriching litter, its branches yield fuelwood at pruning, and its flowers feed bees — multi-purpose roles within farm systems.
Strategies
- Site matching matters: gmelina performs best on deep, moist, well-drained soils and disappoints on shallow or waterlogged sites, so successful planters test before scaling.
- Pruning early produces clear straight boles, raising log grade from low-value pulpwood to furniture-class timber.
Security and Safety Measures
- Harvest crews follow standard felling precautions for a brittle species prone to stem breakage under wind load.
- Because dry-season fires destroy young stands, planters maintain firelines and coordinate with barangay fire brigades.
Historical Context
Gmelina moved through tropical Asia as a classic colonial-era and postwar plantation tree, promoted by forestry agencies for rapid reforestation of degraded land. In the Philippines it became a staple of the 1970s–1990s contract reforestation and later community-based forestry programs, alongside species like mahogany and acacia. Its reputation swung as experience accumulated: celebrated for survival on difficult sites, then critiqued where monocultures underperformed or naturalized beyond plantations — a common arc for introduced plantation species.
Challenges and Controversies
Monoculture Risks
Large gmelina blocks suffer from pest outbreaks and market gluts, and ecologists flag their limited value for native wildlife compared to mixed native plantings.
Quality and Markets
Poorly sited or unpruned gmelina yields knotty, low-density wood, and weak farm-gate prices have occasionally discouraged smallholders, fueling debate over plantation incentives.