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Technical Kisanखेती, तकनीक के साथ
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Natural RubberAll seasonsBudded cloneUpdated 28 August 2026

RRII 414

An RRII 400-series clone (RRII 105 × RRIC 100) released to improve on RRII 105 — earlier tapping, faster immature growth, higher early yield and better Corynespora tolerance.

SeasonAll seasons
Maturity periodPerennial — earlier tapping than RRII 105, then tapped for ~25–30 years
Expected yieldHigh, with strong early yield and fast immature growth
Suitable soilDeep, well-drained laterite / lateritic loam, acidic pH 4.5–6.0

Quick facts

Crop
Natural Rubber
Type
Budded clone
Season
All seasons
Maturity period
Perennial — earlier tapping than RRII 105, then tapped for ~25–30 years
Seed rate
Not a seed crop — about 445 budded plants per hectare at 4.9 × 4.9 m spacing
Expected yield
High, with strong early yield and fast immature growth
Suitable soil
Deep, well-drained laterite / lateritic loam, acidic pH 4.5–6.0
Release
Released by the Rubber Research Institute of India in the RRII 400 series (RRII 105 × RRIC 100)

About this variety

RRII 414 is a clone in the RRII 400 series, bred from the cross RRII 105 × RRIC 100 to close the gaps in RRII 105. It comes into tapping earlier, grows faster through the immature phase, yields well from the start, and tolerates Corynespora leaf fall better than RRII 105 — which together have made it a leading choice for new planting and replanting in the traditional Kerala belt.

Key characteristics

    Plant typeBudded clone
    MaturityPerennial — earlier tapping than RRII 105, then tapped for ~25–30 years
    Yield potentialHigh, with strong early yield and fast immature growth
    Disease resistanceBetter Corynespora tolerance than RRII 105
    SoilDeep, well-drained laterite / lateritic loam, acidic pH 4.5–6.0
    SeasonAll seasons

Sowing & cultivation

  • Sowing timeField-plant budded stumps or polybag plants with the first steady monsoon rains, roughly June–July
  • Seed rateNot a seed crop — about 445 budded plants per hectare at 4.9 × 4.9 m spacing
  • Spacing4.9 × 4.9 m (about 445 trees/ha)
  • Sowing methodPlant into pre-dug, refilled 75 cm pits on a contour layout, with a leguminous cover crop between the rows
  • IrrigationRainfed in the traditional belt; immature-phase irrigation only in dry non-traditional tracts
  • FertilizerGraduated immature NPK-Mg mixtures in split rounds; a mature-rubber NPK-Mg mixture once or twice a year after opening
  • HarvestingReaches tappable girth earlier than RRII 105 — often opened at year 5–6; then alternate-day tapping, refoliation rest and monsoon rain-guarding

Soil & climate

Soil

Suitable soil
Deep, well-drained lateritic soils on gentle to moderate slopes
pH
4.5–6.0

Climate

Climate
Suited to the traditional high-rainfall belt; better Corynespora tolerance widens its safe range compared with RRII 105

Yield & maturity

Maturity period

Perennial — earlier tapping than RRII 105, then tapped for ~25–30 years

Expected yield

High, with strong early yield and fast immature growth

Actual yield depends on sowing time, soil, irrigation, weather, seed quality and crop management.

Pest & disease considerations

Management notes

  • Prophylactic abnormal-leaf-fall spray before the monsoon
  • Follow the recommended tapping and stimulation system to protect against panel dryness as yield builds

Advantages & considerations

Why farmers may choose it

  • Earlier tapping and faster immature growth than RRII 105
  • Strong yield from the early tapping years
  • Better Corynespora tolerance

Things to consider

  • Still susceptible to abnormal leaf fall — the pre-monsoon spray programme is not optional
  • A traditional-belt clone; for the cold north-east use RRII 208, GT 1 or RRIM 600

Suitable regions

The traditional Kerala belt, now a leading choice for new planting and replanting

  • Kerala
  • Tamil Nadu
  • Karnataka

Frequently asked questions

Is RRII 414 better than RRII 105?

For new planting in the traditional belt, RRII 414 is generally the better choice: it taps earlier, grows faster in the immature phase, yields strongly from the start and tolerates Corynespora leaf fall better. RRII 105 still has a very high yield ceiling and decades of field experience behind it where a full disease-management programme is followed.

Where can I get RRII 414 planting material?

From a Rubber Board-licensed nursery. Buy only authenticated, healthy budded stumps or polybag plants — an unauthenticated clone locks a generation of the plantation into the wrong yield and disease profile.

Sourced from: Rubber Board / Rubber Research Institute of India, Rubber Board — clone recommendations. editorial policy.