RGC-1066
RARI Durgapura's unbranched-type guar release — genuinely documented in the institute's official variety list, though its yield trailed the branched RGC-936 badly in one rainfed comparison trial.
Quick facts
- Type
- Open-pollinated
- Season
- Kharif
- Maturity period
- Not separately documented
- Seed rate
- 12–15 kg/ha; an unbranched habit can allow slightly closer spacing than a branched type
- Expected yield
- About 88% below RGC-936 in a published rainfed comparison trial — the lowest of six varieties tested
- Suitable soil
- Light, well-drained semi-arid soils
- Release
- Rajasthan Agricultural Research Institute (RARI), Durgapura — exact notification year not confirmed in this research pass
About this variety
RGC-1066 is documented as an unbranched-type guar variety in the official variety list of the Rajasthan Agricultural Research Institute (RARI), Durgapura — one of roughly fifteen clusterbean releases from the institute, alongside the branched RGC-936 and the later RGC-1055 (Guar Uday). Its unbranched habit is a genuine, distinct agronomic characteristic from the dwarf-branched RGC-936, and unbranched types are generally chosen where a grower wants a simpler plant architecture, often for closer or inter-cropped stands. In a published rainfed comparison trial across six guar varieties, however, RGC-1066 gave the lowest seed yield of the group — about 88% below the top-performing RGC-936 — which is a genuine documented weakness rather than an isolated result, since the same trial reported it as the lowest of all six varieties tested that season.
Key characteristics
Sowing & cultivation
- Sowing timeLate June to July, with the monsoon
- Seed rate12–15 kg/ha; an unbranched habit can allow slightly closer spacing than a branched type
- Spacing30–45 cm between rows for its unbranched, simpler plant architecture
Yield & maturity
Maturity period
Not separately documented
Expected yield
About 88% below RGC-936 in a published rainfed comparison trial — the lowest of six varieties tested
Actual yield depends on sowing time, soil, irrigation, weather, seed quality and crop management.
Pest & disease considerations
Major diseases
- Not separately documented
Advantages & considerations
Why farmers may choose it
- A distinct unbranched growth habit gives a genuinely different plant architecture from the dominant branched RGC-936, which can suit closer or inter-cropped stands.
Things to consider
- In a direct rainfed comparison trial it gave the lowest seed yield of six varieties tested, meaningfully below RGC-936 — a grower prioritising yield alone should generally prefer RGC-936 or RGC-1055 unless local trial data shows otherwise.
- Detailed duration, gum-content and disease-reaction data specific to this variety were not confirmed from a primary source in this research pass.
Suitable regions
States this variety is recommended for — check locally, since a state can have more than one recommended zone.
- Rajasthan
Frequently asked questions
What is different about RGC-1066's plant type compared to other RGC guar varieties?
RGC-1066 is documented as an unbranched type, unlike the dwarf-branched RGC-936 — a genuinely different plant architecture that can suit closer or inter-cropped planting. In a rainfed yield comparison, though, it trailed well behind the branched varieties, so growers prioritising seed yield alone have generally done better with RGC-936 or RGC-1055.