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- Address : Bathalagoda, Ibbagamuwa, Sri Lanka
- E- Mail : rrdi@doa.gov.lk
- Telephone : +94 372 258561
- Fax : +94 372 259881
RRDI Rice Varieties
At 311
Variety name | : At 311 (Neeroga) |
Year of release | : 2015 |
Pedigree | : At 306/At 03-105 |
Average yield | : 5.2 t/ha |
Maturity | : 93 days |
Plant height | : 67.0 cm |
Basal leaf sheath colour | : Green |
Regions recommended for farming | : General cultivation (Basmathi type) |
![RRDI_At311_Grain](https://doa.gov.lk/wp-content/uploads/2021/05/RRDI_At311_Grain.jpg)
![RRDI_At311_Rice](https://doa.gov.lk/wp-content/uploads/2021/05/RRDI_At311_Rice.jpg)
![RRDI_At311_Plant](https://doa.gov.lk/wp-content/uploads/2021/05/RRDI_At311_Plant.jpg)
Grain Quality Characteristics
Weight per bushel of paddy | 17.3 kg |
1000 grain weight | 20.7 g |
Brown rice recovery ( based on weight) | 75.30% |
Milling recovery ( based on weight) | 66.20% |
Head grain recovery ( based on weight) | 64.30% |
Grain shape | Long slender |
Pericarp colour | Red |
Amylose content | High |
Gelatinization temperature | High |
Presence of buff colour | No |
Reaction to Pest and Disease
Pest/Disease | Level Of Resistance |
Blast | Moderately Resistant |
Bacterial Leaf Blight | Moderately Susceptible |
Gall Midge | Resistant/Moderately Resistant |
Brown Planthopper | Moderately Resistant |
Grain Quality Characteristics
Weight per bushel of paddy | 17.3 kg |
1000 grain weight | 20.7 g |
Brown rice recovery ( based on weight) | 75.30% |
Milling recovery ( based on weight) | 66.20% |
Head grain recovery ( based on weight) | 64.30% |
Grain shape | Long slender |
Pericarp colour | Red |
Amylose content | High |
Gelatinization temperature | High |
Presence of buff colour | No |
Resistance to Pests and Diseases
Pest/Disease | Level Of Resistance |
Blast | Moderately Resistant |
Bacterial Leaf Blight | Moderately Susceptible |
Gall Midge | Resistant/Moderately Resistant |
Brown Planthopper | Moderately Resistant |