Growing more rice with less water

Rijsberman, Frank

doi:10.1007/s10333-004-0059-y

Cited by 4 publications

(5 citation statements)

References 2 publications

(3 reference statements)

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“…Rice cultivation throughout the world is subjected to the pressures of declining water supply and increased productivity, regardless of cultural history (Molden 2007; Lee 2009). Although details differ from region to region, reduced flooding and intensification of production systems are pervasive (Ellis & Wang 1997; Miyamoto 2007) and threaten biodiversity, even in traditional systems (Bambaradeniya & Amarasinghe 2003; Rijsberman 2004). Consideration of all flood-dependent biota and all habitats in the wider landscape is essential for biodiversity management in rice growing systems worldwide.…”

Section: Conclusion and Global Perspectivementioning

confidence: 99%

“…It may have displaced natural wetland habitats though recent development, for example in California (USA), Brazil and Australia (Stenert et al 2009) or have evolved intimately with the flooded environment over periods of time up to 8000 years (Ellis & Wang 1997). In either case, changed cultivation and irrigation practices, and particularly increased intensification in traditional rice-growing areas are going to have impacts on ecosystems and the biodiversity associated with them (Rijsberman 2004;Miyamoto 2007). There is little known about the relationship between flooded rice habitats and surrounding landscapes in terms of biodiversity, but this is going to become an increasingly important issue for conservation given global trends of natural wetland loss and modernization, and intensification of paddy rice cultivation (Ferrero 2006;Miyamoto 2007;Stenert et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Frogs recorded in the Riverina. Summary of historic records and recent habitat records in the irrigation areas as collated and reported by: 1 = Ehmann (1996); 2 = Wassens et al(2004); 3 = Doody et al (2006); and 4 =Wassens et al (2008).…”

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confidence: 99%

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Introducing irrigation efficiencies: prospects for flood-dependent biodiversity in a rice agro-ecosystem

et al. 2011

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SUMMARYWorldwide, irrigation development has affected pre-existing natural habitats and created novel aquatic habitats, and future changes in management will continue to influence flood-dependent vegetation and fauna. Irrigated agriculture has had a profound influence on native biodiversity in the Riverina region of temperate Australia. Current irrigation practices provide large amounts of water to the landscape in the form of constructed wetland habitats: irrigation channels, impoundments and flooded crop-growing areas. Flooded rice bays support many species of native wetland plants, and 12 of the 14 species of frog recorded in the region. All constructed habitats provide a food resource for waterbirds, but not breeding habitat. While a species of tortoise benefits from the provision of constructed habitats, terrestrial reptiles and mammals are most abundant in remaining native vegetation. The climate is predicted to become increasingly hot and dry, with a reduced and more variable supply of irrigation water, thus placing increasing stress on farming and on natural ecosystems. The predicted reduction of constructed aquatic habitats may affect the native species using them, but may not have a major adverse impact on biodiversity regionally because the species recorded in constructed habitats tend be abundant and widespread, and such species also occur in natural wetland habitats. Sensitive species that depend on native vegetation persisting in reasonable amounts and in good condition are at greater risk. In the Riverina, the remaining native vegetation should be managed to protect and improve its condition, including appropriate managed inundation events for flood-dependent communities. The landscape should be managed to provide the best context for the function and health of existing vegetation including moderating the effects of soil disturbance, fertilizers and herbicides. The impacts of changed irrigation practices should be mitigated through managed flooding of remnant vegetation. In countries with more evolved, traditional rice-growing systems than the Riverina, there will be greater emphasis on biodiversity coexistence with cultivation. Nonetheless, in all settings there is value in jointly considering the role of both natural and constructed habitats in biodiversity research and conservation.

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Section: Conclusion and Global Perspectivementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Introducing irrigation efficiencies: prospects for flood-dependent biodiversity in a rice agro-ecosystem

et al. 2011

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“…There is a major challenge for paddy rice cultivators to increase the productivity of water used to grow rice. To grow rice with much less water in the scarce water condition due to increasing demand of water for domestic and industry is necessary and possible [10]. Efforts have been conducted to increase the water productivity for growing rice [8,10,11].…”

Section: Water Saving Irrigationmentioning

confidence: 99%

Flood Reduction Function of Paddy Rice Fields under Different Water Saving Irrigation Techniques

Sujono¹

2010

JWARP

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This study is conducted to investigate the function of paddy fields for flood reduction under different water saving irrigation techniques. A daily water balance component data including rainfall, percolation, and overflow through the paddy field levee were collected from experimental paddy rice fields during rainy season cultivation. Results show that paddy field was very effective in flood reduction. More than 40% of rainfall could be stored in the paddy fields. However, the effectiveness of paddy fields in flood reduction was highly depends on the WSI technique used. Semi dry cultivation technique was the most effective one in terms of flood reduction. It retained the rainfall up to 55.7% (365 mm) of the total rainfall (636 mm) without reducing the yield. In terms of flood volume reduction, the alternate wetting and drying performed similarly with traditional continuous flooding, i.e., 37.2% and 40.8%, respectively

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“…To grow rice with much less water is necessary and possible [4]. Research has been conducted to increase the water productivity for growing rice [2,3,[5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Improving the water productivity of paddy rice (Oryza sativa L.) cultivation through water saving irrigation treatments

Sujono

Matsuo²,

Hiramatsu³

et al. 2011

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Rice grows well under certain condition and environment including soil, water and nutrients. Some researches have shown that traditional method with continues flooding need tremendeous amount of water for rice cultivation and gives low water productivity. To increase the water productivity, number of water saving irigation techniques have been studied and applied. Study on effect of number of water irrigation treatments on water productivity of rice was carried out. Eight irrigation treatments were conducted for growing rice in pot experiment i.e. shallow intermittent irrigation (SII), alternate wetting and drying (AWD1, AWD2, AWD3 and AWD4), shallow water depth with wetting and drying (SWD1 and SWD2), and semi-dry cultivation (SDC). The performance of those treatments in terms of agronomic and water parameters was compared to the shallow intermittent irrigation as a control method. The study reveals that the shallow intermittent irrigation needs the highest amount of water compare with other treatments. The lowest amount of water was achieved under the semi-dry cultivation. It could save water up to 18.4% compare to the control treatment. By using the alternate wetting and drying and the shallow water depth with wetting and drying treatments, irrigated water can be reduced up to 13.1% and 5.4%, respectively. The highest grain was obtained by alternate wetting and drying (AWD4) and the semi-dry cultivation yielded the smalest grain. On average the alternate wetting and drying and shallow water depth with wetting and drying increased the grain yield by 22.9% and 17.9%, whereas the semi-dry cultivation reduced the yield up to 14% compare to the shallow water depth treatment. The alternate wetting and drying treatments have significantly improved the water productivity by 41.6%, shallow water depth with wetting and drying increased by 24.2% relative to the shallow intermittent irrigation treatment, whereas the most saving water treatment i.e. the semidry cultivation performed quite similar with the shallow water depth treatment, as a result of low grain yields under the treatment.

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Growing more rice with less water

Cited by 4 publications

References 2 publications

Introducing irrigation efficiencies: prospects for flood-dependent biodiversity in a rice agro-ecosystem

Introducing irrigation efficiencies: prospects for flood-dependent biodiversity in a rice agro-ecosystem

Flood Reduction Function of Paddy Rice Fields under Different Water Saving Irrigation Techniques

Improving the water productivity of paddy rice (Oryza sativa L.) cultivation through water saving irrigation treatments

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