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Deep Water Rice Ecosystem

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1. About 13 million hectares are under deep water rice ecosystem. Mostly in South Asia.

2. These are the regions where rice grows under rainfed dryland or shallow flooding conditions for 1-3 months and is then subjected to flooding with water depth of more than 50 cm for a month or longer.

3. These areas are found in the river basins of Ganges and Brahmaputra in India and Bangladesh, the Irrawaddy in Myanamar, the Mekong Delta of Vietnam and Cambodia and the Chao Pharaya in Thailand.

4. When water levels are above 100 cm, the crop is known as floating rice, while Tidal Wetlands occur where water levels are fluctuating and are influenced by tide such as in coastal belts.

File Courtesy: 
http://agropedia.iitk.ac.in/?q=content/deep-water-ecosystem
Photo Courtesy: 
Mr. Chaitanya, DRR
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