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

RRII 417

An RRII 400-series clone from the same RRII 105 × RRIC 100 cross as RRII 414, combining vigorous growth and high yield with a good general disease profile.

SeasonAll seasons
Maturity periodPerennial — 5–7 years to first tapping, then tapped for ~25–30 years
Expected yieldHigh, with vigorous 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 — 5–7 years to first tapping, 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 vigorous 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

About this variety

RRII 417 is another clone from the RRII 400 series, from the same RRII 105 × RRIC 100 cross that produced RRII 414. It is vigorous and high-yielding with a good general disease profile, and is planted alongside RRII 414 for new planting and replanting in the traditional Kerala belt.

Key characteristics

    Plant typeBudded clone
    MaturityPerennial — 5–7 years to first tapping, then tapped for ~25–30 years
    Yield potentialHigh, with vigorous growth
    Disease resistanceGood general disease tolerance
    SoilDeep, well-drained laterite / lateritic loam, acidic pH 4.5–6.0
    SeasonAll seasons

Sowing & cultivation

  • Sowing timeField-plant 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 mixture once or twice a year after opening
  • HarvestingVigorous growth brings it to tappable girth in about 5–7 years; 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 below about 600 m

Yield & maturity

Maturity period

Perennial — 5–7 years to first tapping, then tapped for ~25–30 years

Expected yield

High, with vigorous 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 system as yield builds with the vigorous growth

Advantages & considerations

Why farmers may choose it

  • Vigorous immature growth and early tapping
  • High yield with a good general disease profile
  • A recommended traditional-belt clone for new planting

Things to consider

  • Still needs the pre-monsoon abnormal-leaf-fall spray
  • Bred for the traditional belt, not the cold north-east

Suitable regions

The traditional Kerala belt, planted alongside RRII 414 for new planting

  • Kerala
  • Tamil Nadu
  • Karnataka

Frequently asked questions

How is RRII 417 different from RRII 414?

Both are RRII 400-series clones from the same RRII 105 × RRIC 100 cross, recommended for new planting in the traditional Kerala belt. They perform similarly; a grower typically plants whichever authenticated planting material the Board-licensed nursery has, or a mix of the two.

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