The Rubber Variety Structure is an official document issued by the Vietnam Rubber Group (VRG). Its main purpose is to improve latex yield, ensure proper establishment time (immature period), and optimize variety suitability for each distinct rubber-growing region in Vietnam.
Why the Rubber Variety Structure Matters
Table of Contents
The Rubber Variety Structure plays a crucial role in guiding farmers and plantation managers to select appropriate rubber clones for each region, based on three key criteria:
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Latex productivity
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Immature period (KTCB)
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Regional adaptability
In other words, recommended rubber clones must ensure high yield and strong growth while maintaining resistance to region-specific limiting factors.
Regional Limiting Conditions
Each growing region in Vietnam has its own environmental constraints:
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Southeast Region: Prone to Powdery Mildew and Rainy-Season Leaf Fall; some areas face mild drought and poor soils.
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Central Highlands: Experiences long dry seasons, frequent winds, and low temperatures.
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South Central and North Central Regions: Poor soils, seasonal droughts, frequent storms, and prolonged rains limiting latex tapping.
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Northern Mountainous Region: Subject to frost and complex terrain.
To optimize production, each region is further divided into three sub-zones according to suitability levels:
A – Highly Suitable, B – Suitable, C – Less Suitable.
Rubber Clone Planning under the Variety Structure
The structure divides recommended clones into three groups for the 2022–2026 replanting and new-planting programs:
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Table I – Major Production Clones (80% of planting area)
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Table II – Medium-Scale Production Clones (15%)
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Table III – Experimental Clones (5%)
During this phase, VRG also encourages the use of dual-purpose clones—for both latex and timber production—to increase plantation profitability.
Historically, most rubber clones planted across Vietnam have followed VRG’s official Variety Structure, so farmers are strongly advised to use the recommended clones for new plantations and replanting.
For personalized advice, contact us for free consultation on clone selection suitable for your region.
Official Decision
On October 26, 2021, the Vietnam Rubber Group (VRG) issued Decision No. 250/QĐ-HĐQTCSVN, approving the Rubber Variety Structure for 2022–2026 with orientation toward 2030.
Clone Structure 2022–2026 (Table I)
Priority is given to clones listed earlier within each region.
Sub-regions are classified by soil quality, rainfall, and disease pressure as follows:
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Sub-region A:
Optimal soil (Grade I), annual rainfall 1,800–2,500 mm, and mild to moderate disease pressure.
Example: Most Grade I areas of Bình Dương, Bình Phước, etc. -
Sub-region B:
One of the three main factors lower than in A — e.g., Grade II soils, rainfall below 1,800 mm (Hòa Bình, Bà Rịa, much of Đồng Nai) or above 2,500 mm (Yên Bái, Hà Giang), or severe disease incidence. -
Sub-region C:
Two or more factors below standard — e.g., Grade III soil, altitude above 650 m, or very high rainfall (> 2,500 mm) combined with heavy disease outbreaks.
Typical for marginal rubber areas beyond A and B.
Average Latex Yield by Popular Clones
| Clone | Average Yield (tons / ha / year) |
|---|---|
| RRIV 209 | 3.0 t/ha |
| RRIV 114 | 2.5 t/ha |
| RRIV 103 | 2.0 t/ha |
| RRIV 106 | 2.2 t/ha |
| PB 235 | 1.2 t/ha |
Conclusion
The Rubber Variety Structure 2022–2026 provides an essential roadmap for sustainable rubber production in Vietnam. By following VRG’s clone recommendations, farmers can achieve higher latex yield, shorter immature periods, and better adaptability to regional conditions, ensuring long-term plantation efficiency and profitability.