Transforming Inundated Rice Cultivation

Bindraban, P.S.; Hengsdijk, H.; Cao, Weixing; Shi, Qinghua; Thiyagarajan, T.M.; Krogt, Wil van der; Wardana, I Putu

doi:10.1080/07900620500405338

Cited by 23 publications

(15 citation statements)

References 25 publications

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“…Similar findings were reported by Thiyagarajan et al (2002) in Coimbatore (India), with water savings of 56%, Cao et al (2002) with savings up to 36% in Nanjing (China), and Bindraban et al (2006) with water savings up to 50% for a range of experimental conditions, while Shi et al (2002), also in China, reported similar water savings and a slightly positive effect on yields. Water-saving irrigation from transplanting to flowering, followed by maintenance of a thin layer of standing water during the post-flowering stage did not lead to reduced grain yields.…”

Section: Effect Of Intermittent Irrigation On Yield and Water Use Effsupporting

confidence: 75%

Enhancing Water and Fertilizer Saving Without Compromising Rice Yield Through Integrated Crop Management

Wardana

Gania

Abdulrachman

et al. 2013

Indones. J. Agric. Sci.

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Water and fertilizer scarcity amid the increasing need of rice production challenges today's agriculture. Integrated crop management (ICM) is a combination of water, crop, and nutrient management that optimizes the synergistic interaction of these components aiming at improving resource use efficiency, i.e. high productivity of water, land, and labor. The objectives of the study were to investigate the effects of crop establishment method, organic matter amendment, NPK management, and water management on yield of lowland rice. Five series of experiments were conducted at Sukamandi and Kuningan Experimental Stations, West Java. The first experiment was focused on crop establishment method, i.e. plant spacing and number of seedlings per hill. The second, third, and fourth experiments were directed to study the effect of NPK and organic matter applications on rice yield. The fifth experiments was designed to evaluate the effect of water management on rice yield. Results showed that 20 cm x 20 cm plant spacing resulted in the highest grain yield for the new plant type rice varieties. Organic matter and P fertilizer application did not significantly affect grain yield, but the yield response to P fertilization tended to be stronger with organic matter amendment. Split P application did not significantly increase grain yield. The use of a scale 4 leaf color chart reading resulted in a considerable N fertilizer saving without compromising rice yield. Intermittent irrigation technique saved water up to 55% without affecting yields, resulting in a 2-3 times higher water productivity.

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Section: Effect Of Intermittent Irrigation On Yield and Water Use Effsupporting

confidence: 75%

Enhancing Water and Fertilizer Saving Without Compromising Rice Yield Through Integrated Crop Management

Wardana

Gania

Abdulrachman

et al. 2013

Indones. J. Agric. Sci.

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“…Throughout Asia, fresh water resources are stressed due to increased water demand, shrinkage of lakes, decline in the ground water table, and contamination of existing water resources (Li and Barker, 2004; Li, 2006), resulting in increased pressure on water managers to transfer high quality fresh water from agricultural use to industrial, residential and municipal uses, while increasing rice production (Bindraban et al, 2006; Bouman and Tuong, 2001; Li, 2006). Water use efficiency in continuously flooded rice agriculture is generally low; approximately 80% of the water applied to rice paddies is lost through evaporation, surface runoff, and percolation (Bindraban et al 2006; Bachand et al, in press, b).…”

Section: The Influence Of Rice Cultivation Practices On Hg Cyclingmentioning

confidence: 99%

Rice methylmercury exposure and mitigation: A comprehensive review

Rothenberg

Windham‐Myers

Creswell

2014

Environmental Research

170

151

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Rice cultivation practices from field preparation to post-harvest transform rice paddies into hot spots for microbial mercury methylation, converting less-toxic inorganic mercury to more-toxic methylmercury, which is likely translocated to rice grain. This review includes 51 studies reporting rice total mercury and/or methylmercury concentrations, based on rice cultivated or purchased in 15 countries. Not surprisingly, both rice total mercury and methylmercury levels were significantly higher in polluted sites compared to non-polluted sites (Wilcoxon rank sum, p<0.001). However, rice percent methylmercury (of total mercury) did not differ statistically between polluted and non-polluted sites (Wilcoxon rank sum, p=0.35), suggesting comparable mercury methylation rates in paddy soil across these sites and/or similar accumulation of mercury species for these rice cultivars. Studies characterizing the effect of rice cultivation under more aerobic conditions were reviewed to determine the mitigation potential of this practice. Rice management practices utilizing alternating wetting and drying (instead of continuous flooding) caused soil methylmercury levels to spike, resulting in a strong methylmercury pulse after fields were dried and reflooded; however, it is uncertain whether this led to increased translocation of methylmercury from paddy soil to rice grain. Due to the potential health risks, it is advisable to investigate this issue further, and to develop separate water management strategies for mercury polluted and non-polluted sites, which minimize methylmercury exposure through rice ingestion.

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“…Traditional paddy rice cultivation has used inundation for some 5000 years, but this results in 2-5 times more water use than other cereals (Bindraban et al 2006). Given that paddy rice cultivation now covers a huge area and is of overwhelming importance in global food supply, these are potentially major developments, although the full agronomic, environmental and socio-economic consequences of such changes are complex (Bindraban et al 2006). Soil evaporation can also be reduced by achieving a rapid ground cover through early crop vigour and fertilizers have been shown to help (Gregory 2004).…”

Section: Crop Management Strategiesmentioning

confidence: 99%

Improving water use in crop production

Morison

Baker

Mullineaux

et al. 2007

Phil. Trans. R. Soc. B

496

317

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Globally, agriculture accounts for 80-90% of all freshwater used by humans, and most of that is in crop production. In many areas, this water use is unsustainable; water supplies are also under pressure from other users and are being affected by climate change. Much effort is being made to reduce water use by crops and produce 'more crop per drop'. This paper examines water use by crops, taking particularly a physiological viewpoint, examining the underlying relationships between carbon uptake, growth and water loss. Key examples of recent progress in both assessing and improving crop water productivity are described. It is clear that improvements in both agronomic and physiological understanding have led to recent increases in water productivity in some crops. We believe that there is substantial potential for further improvements owing to the progress in understanding the physiological responses of plants to water supply, and there is considerable promise within the latest molecular genetic approaches, if linked to the appropriate environmental physiology. We conclude that the interactions between plant and environment require a team approach looking across the disciplines from genes to plants to crops in their particular environments to deliver improved water productivity and contribute to sustainability.

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Transforming Inundated Rice Cultivation

Cited by 23 publications

References 25 publications

Enhancing Water and Fertilizer Saving Without Compromising Rice Yield Through Integrated Crop Management

Enhancing Water and Fertilizer Saving Without Compromising Rice Yield Through Integrated Crop Management

Rice methylmercury exposure and mitigation: A comprehensive review

Improving water use in crop production

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