Rainfed rice - IRRI books - International Rice Research Institute

RAINFED RICE A SOURCEBOOK OF BEST PRACTICES AND STRATEGIES IN EASTERN INDIA
In flood-prone areas, loss of biodiversity is mainly due to changes in cropping
patterns; e.g., in West Bengal, fallow-deepwater rice is being replaced by
fallow- Boro (summer) rice-fallow-late rice. Although varietal composition is
changing, farmers grow a larger number of new varieties.
Changing varietal composition over time in different ecosystems in West Bengal
Varieties grown in 1988 Varieties grown in 1999
Rainfed upland
Rasi, LET 826, CR 126-42-1 (Kalinga I), Palman 579, Heera, Kalinga III, Sneha, Aditya, Prasanna, Kalyani II,
CR 237-1 (Kalinga Ill), Dular, NC 1626, Badkalamkati, Khanika, Jamini, Rasi, Tulasi, Kalinga I, Bhupen, Panke,
Churnakati Annada, IET 2233
Irrigated
Ratna, Lakshmi, IET 2233, Khitish, CNM 25, IR36, PNR 381, PNR 162, PNR 519, IET 4786, IR64, Ratna,
Shyashree, Prakash, Kunti, IR20, CNBP 217 Khitish, Bikash, Lalat, IR36, Ajaya, Kunti, Swarna (MTU
7209), Pantdhan 4, Shyashree, Pratap, Prakash, IR20,
Surekha, Vikramacharya
Rainfed lowland (up to 50 cm)
Pankaj, Swarnadhan, Mahsuri, Mandira, Suresh, Biraj, IR42, Shalibhan, Swarnadhan, Bipasha, Jogen,
Sabitri, Jogen, Sabita, Nagra, Bhasamanik, Rupsail, Mansarovar, Tulasi, Mahsuri, Lunishree, Sabitri, CR 1002,
Jhingasail, Kalma 222, Patnai 23, Raghusail, NC 678, NC CR 1014, Suresh, Biraj, Utkalprabha, Sabita, Mandira
1281, OC 1393, SR 26B
Deepwater (>50 cm)
Jaladhi 1, Jaladhi 2, Tilakkachari, Achra, Kumargore Jitendra, Purnendu, Sudhir, Golak, Sunil, Mahananada,
Dinesh, Jalaprabha, Saraswati, Bhagirathi, Hanseshwati,
Ambika
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Farmers select new varieties depending upon land type, soil type and water
availability. The release and spread of high-yielding varieties have fast
replaced the low-yielding, locally grown cultivars and landraces, e.g., the
scented rice varieties of Uttar Pradesh.