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Isabgol (Psyllium)RabiOpen-pollinatedUpdated 2 September 2026

Gujarat Isabgol-2 (GI-2)

Anand Agricultural University's second isabgol release, still widely grown, but documented as the weakest of four compared genotypes for downy mildew tolerance in a published field trial.

SeasonRabi
Maturity period110–115 days
Expected yield900–1,000 kg/ha
Suitable soilLight, well-drained sandy loam

Quick facts

Crop
Isabgol (Psyllium)
Type
Open-pollinated
Season
Rabi
Maturity period
110–115 days
Seed rate
4–5 kg/ha, mixed with sand or fine soil for even broadcasting
Expected yield
900–1,000 kg/ha
Suitable soil
Light, well-drained sandy loam
Release
Released 1983 · Anand Agricultural University (AAU), Gujarat

About this variety

Gujarat Isabgol-2 (GI-2) was released in 1983 by Anand Agricultural University (AAU), Gujarat. It has a medium-broad, pale-green leaf and yields somewhat more than the earlier GI-1, at roughly 900–1,000 kg/ha. GI-2 is widely used as a check/comparison variety in isabgol research because it is well established and consistently grown — but that same research has repeatedly found it carries weaker downy mildew tolerance than newer releases: in one published field trial comparing four genotypes, GI-2 showed the highest disease severity index of the group. Since downy mildew, especially the form that infects the flower directly, is the disease that decides most isabgol seasons, this is a real practical limitation for growers in a humid-prone tract, even though the variety remains common and easy to source.

Key characteristics

    Plant typeOpen-pollinated
    Maturity110–115 days
    Yield potential900–1,000 kg/ha
    Disease resistanceWeaker downy mildew tolerance than newer releases — showed the highest disease index of four genotypes compared in one published trial
    SoilLight, well-drained sandy loam
    SeasonRabi

Sowing & cultivation

  • Sowing timeFirst half of November for best yield
  • Seed rate4–5 kg/ha, mixed with sand or fine soil for even broadcasting

Yield & maturity

Maturity period

110–115 days

Expected yield

900–1,000 kg/ha

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

Pest & disease considerations

Advantages & considerations

Why farmers may choose it

  • Slightly higher yield than GI-1, at roughly 900–1,000 kg/ha.
  • Widely available, well-established seed source across Gujarat and Rajasthan.

Things to consider

  • Documented as having the weakest downy mildew tolerance among four compared genotypes in a published trial — a real risk in a humid, disease-prone season.
  • Better suited to areas with a lower history of downy mildew pressure than to a field with a known disease record.

Suitable regions

States this variety is recommended for — check locally, since a state can have more than one recommended zone.

  • Gujarat
  • Rajasthan

Sourced from: Anand Agricultural University (AAU), Gujarat. editorial policy.