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CAB eBooks

Ebooks on agriculture and the applied life sciences from CAB International

CABI Book Chapter

Tropical deltas and coastal zones: Food production, communities and environment at the land and water interface.

Book cover for Tropical deltas and coastal zones: Food production, communities and environment at the land and water interface.


This book with 33 chapters divided into five parts is a compendium of selected papers from the conference that can be broadly categorized as land and water management, fisheries and aquaculture and rice-based agriculture systems. Intensification of aquaculture and rice-based agriculture frequently produces negative effects that range from environmental degradation to social conflict; managing thes...


Chapter 20 (Page no: 264)

Water supply and demand for dry-season rice in the coastal polders of Bangladesh.

In Bangladesh, about 1.0 million ha of land, most of which remain fallow in the dry season, are affected by varying degrees of salinity. Studies show that utilization of river water is a feasible technology for dry-season rice (locally known as boro rice) cultivation, but reservoir volume limits the irrigated area in the dry season. Therefore, alternatives should be developed to increase the rice area and the productivity of the coastal region of Bangladesh, not only to meet future food demand, but also to improve farmers' livelihoods. One option is to maximize river water utilization before it becomes saline and minimize dependency on the reservoir water for boro rice cultivation. Experiments were therefore conducted in polder 30 at Batiaghata Subdistrict in Khulna District during the dry seasons of 2005/06 and 2006/07 to test the hypothesis that early crop establishment can reduce the reservoir water-use period, thereby increasing the irrigated area and productivity. The results showed that seeding on 7 November produced 4-5 t/ha rice yield by utilizing about 50% of the required water directly from the river and the remaining 50% from the reservoir. Seeding on 15 November produced a rice yield on par with that of 7 November, but more reservoir water was used for the later seeding date, which would then reduce the dry season irrigation coverage. The rice yield was reduced drastically when seeding was carried out before 7 November because of cold stress at the critical reproductive period of rice. This study determined that about 260 mm water was required from the reservoir for successful cultivation of boro rice in the coastal area and about 14% of net cultivable area (NCA) could be brought under irrigation with the existing hydraulic system of polder 30. With moderate excavation, the irrigation coverage could be increased to about 35% of NCA. Therefore, both productivity and irrigated area in the dry season could be increased by advancing the rice cultivation season to the second week of November through to the first week of April.

Other chapters from this book

Chapter: 1 (Page no: 1) Policy, planning and management at the land-water interface. Author(s): Szuster, B. Hoanh, C. T. Kam, S. P. Ismail, A. M. Noble, A. Borger, M.
Chapter: 2 (Page no: 13) Aquatic resources and environmental variability in Bac Lieu Province (southern Vietnam). Author(s): Baran, E. Chheng, P. Warry, F. Toan, V. T. Hung, H. P. Hoanh, C. T.
Chapter: 3 (Page no: 33) Integrating aquaculture in coastal river planning: the case of Dagupan City, Philippines. Author(s): Andalecio, M. N. Cruz, P. S.
Chapter: 4 (Page no: 48) Evolution of shrimp aquaculture systems in the coastal zones of Bangladesh and Vietnam: a comparison. Author(s): Joffre, O. Prein, M. Tung, P. B. V. Saha, S. B. Hao, N. V. Alam, M. J.
Chapter: 5 (Page no: 64) Ecological risk assessment of an alien aquatic species: a case study of Litopenaeus vannamei (Pacific whiteleg shrimp) aquaculture in the Bangpakong River, Thailand. Author(s): Senanan, W. Panutrakul, S. Barnette, P. Manthachitra, V. Chavanich, S. Kapuscinski, A. R. Tangkrock-Olan, N. Intacharoen, P. Viyakarn, V. Wongwiwatanawute, C. Padetpai, K.
Chapter: 6 (Page no: 80) Ability of Litopenaeus vannamei to survive and compete with local marine shrimp species in the Bangpakong River, Thailand. Author(s): Panutrakul, S. Senanan, W. Chavanich, S. Tangkrock-Olan, N. Viyakarn, V.
Chapter: 7 (Page no: 93) Improving the productivity of the rice-shrimp system in the south-west coastal region of Bangladesh. Author(s): Alam, M. J. Islam, M. L. Saha, S. B. Tuong, T. P. Joffre, O.
Chapter: 8 (Page no: 106) Zooplankton dynamics and appropriate management approach for blue swimming crab in Kung Krabaen Bay, Thailand. Author(s): Tantichaiwanit, W. Gajaseni, N. Piumsomboom, A. Kunsook, C.
Chapter: 9 (Page no: 117) Rebuilding resilient shrimp aquaculture in South-east Asia: disease management, coastal ecology and decision making. Author(s): Bush, S. R. Zwieten, P. A. M. van Visser, L. Dijk, H. van Bosma, R. Boer, F. de Verdegem, M.
Chapter: 10 (Page no: 133) Integrated management of aquatic resources: a Bayesian approach to water control and trade-offs in Southern Vietnam. Author(s): Baran, E. Jantunen, T. Chheng, P. Hoanh, C. T.
Chapter: 11 (Page no: 144) Soil characteristics of saline and non-saline deltas of Bangladesh. Author(s): Saleque, M. A. Uddin, M. K. Salam, M. A. Ismail, A. M. Haefele, S. M.
Chapter: 12 (Page no: 154) Designing resilient rice varieties for coastal deltas using modern breeding tools. Author(s): Ismail, A. M. Thomson, M. J. Vergara, G. V. Rahman, M. A. Singh, R. K. Gregorio, G. B. Mackill, D. J.
Chapter: 13 (Page no: 166) The right rice in the right place: systematic exchange and farmer-based evaluation of rice germplasm for salt-affected areas. Author(s): Singh, R. K. RedoƱa, E. Gregorio, G. B. Salam, M. A. Islam, M. R. Singh, D. P. Sen, P. Saha, S. Mahata, K. R. Sharma, S. G. Pandey, M. P. Sajise, A. G. Mendoza, R. D. Toledo, M. C. Dante, A. Ismail, A. M. Paris, T. R. Haefele, S. M. Thomson, M. J. Zolvinski, S. Singh, Y. P. Nayak, A. K. Singh, R. B. Mishra, V. K. Sharma, D. K. Gautam, R. K. (et al)
Chapter: 14 (Page no: 183) Rice varieties and cultural management practices for high and sustained productivity in the coastal wetlands of southern Bangladesh. Author(s): Salam, M. A. Islam, M. R. Rahman, M. S. Rahman, M. A. Bhuiyan, M. A. R. Seraj, Z. I. Aditya, T. L. Uddin, M. K. Mondal, M. K. Ismail, A. M. Adorada, D. L. Mendoza, R. D. Tumimbang-Raiz, E. B. Gregorio, G. B.
Chapter: 15 (Page no: 199) Boro rice for food security in coastal West Bengal, India. Author(s): Roy, S. K. B.
Chapter: 16 (Page no: 209) Strategies for improving and stabilizing rice productivity in the coastal zones of the Mekong Delta, Vietnam. Author(s): Lang, N. T. Buu, B. C. Viet, N. V. Ismail, A. M.
Chapter: 17 (Page no: 223) Diversified cropping systems in a coastal province of the Mekong Delta, Vietnam: from testing to outscaling. Author(s): Ni, D. V. Phat, T. D. Lu, T. Tung, P. B. V. Ben, D. C. Vu, D. H. Thai, P. H. Giang, P. H. Tuong, T. P.
Chapter: 18 (Page no: 239) Improving rice productivity in the coastal saline soils of the Mahanadi Delta of India through integrated nutrient management. Author(s): Mahata, K. R. Singh, D. P. Saha, S. Ismail, A. M. Haefele, S. M.
Chapter: 19 (Page no: 249) Crop diversification for improving water productivity and rural livelihoods in coastal saline soils of the Mahanadi Delta, India. Author(s): Singh, D. P. Mahata, K. R. Saha, S. Ismail, A. M.
Chapter: 21 (Page no: 279) An analysis of environmental policy strategies for coastal land conservation in Thailand. Author(s): Pongthanapanich, T.
Chapter: 22 (Page no: 293) Conflicts and governance: perspectives on an eastern and western coastal wetland in India. Author(s): Narayanan, N. C.
Chapter: 23 (Page no: 307) Farmers' assessment of resource management and farm-level technological interventions in the Mekong Delta, Vietnam. Author(s): Can, N. D. Khiem, N. T. Hossain, M. Tuong, T. P.
Chapter: 24 (Page no: 320) Assessing needs, constraints and livelihood opportunities in coastal saline environments: a case in Orissa, India. Author(s): Paris, T. R. Saha, S. Singh, D. P. Mahata, K. R. Cueno, A. delos R. Zolvinski, S. Ismail, A. M.
Chapter: 25 (Page no: 335) Participatory management of coastal resources: a case study of Baganchra-Badurgacha subproject in the South-west of Bangladesh. Author(s): Islam, M. N. Rinfret, J. R. Islam, Q. R.
Chapter: 26 (Page no: 350) Learning to build resilient coastal communities: post-tsunami recovery in Sri Lanka and Indonesia. Author(s): Larsen, R. K. Thomalla, F. Miller, F.
Chapter: 27 (Page no: 367) Social vulnerability to coastal hazards in South-east Asia: a synthesis of research insights. Author(s): Zou, L. Thomalla, F.
Chapter: 28 (Page no: 384) An extended hydrological classification for mangrove rehabilitation projects: a case study in Vietnam. Author(s): Dijksma, R. Loon, A. F. van Mensvoort, M. E. F. van Huijgevoort, M. H. J. van Brake, B. te
Chapter: 29 (Page no: 398) Coastal transects analysis of Chao Phraya Delta, Thailand. Author(s): Chuenpagdee, R. Traesupap, S. Juntarashote, K.
Chapter: 30 (Page no: 409) Mangrove system sustainability: public incentives and local strategies in West Africa. Author(s): Cormier-Salem, M. C. Bernatets, C. Sarr, O.
Chapter: 31 (Page no: 422) Assessing the impact of small-scale coastal embankments: a case study of an LGED polder in Bangladesh. Author(s): Chowdhury, A. K. M. Jenkins, S. A. M. Hossain, M.
Chapter: 32 (Page no: 436) Dynamics of livelihoods and resource use strategies in different ecosystems of the coastal zones of Bac Lieu Province, Vietnam. Author(s): Khiem, N. T. Hossain, M.
Chapter: 33 (Page no: 448) Utilization of aquatic resources along the North Brazilian coast with special reference to mangroves as fish nurseries. Author(s): Saint-Paul, U. Barletta, M.