Enhancing field scale water productivity for several rice cultivars under limited water supply

Jonubi, Roza; Rezaverdinejad, Vahid; Salemi, H. R.

doi:10.1007/s10333-017-0622-y

Cited by 10 publications

(3 citation statements)

References 26 publications

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“…Proper water and N management could have a positive impact on the improvement of yield [36,37]. The effects of water on grain yield (Table 3) and WP (Figure 5) were significant (p < 0.05), and N application significantly increased both irrigation amount and WP compared with N0 (Figure 5).…”

Section: Discussionmentioning

confidence: 97%

Effects of Water and Nitrogen Management on Water Productivity, Nitrogen Use Efficiency and Leaching Loss in Rice Paddies

Chen

et al. 2022

Water

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Effective water and nitrogen (N) management strategies are critical for sustainable agricultural development. Lysimeter experiments with two deep percolation rates (low percolation and high percolation, i.e., LP and HP: 3 mm d−1 and 5 mm d−1) and five N application levels (N0~N4: 0, 60, 135, 210 and 285 kg N ha−1) were conducted to investigate the effects of controlled drainage on water productivity (WP) and N use efficiency (NUE) in water-saving irrigated paddy fields. The results demonstrated that NH4+-N and NO3−-N were the major components of total nitrogen (TN) in ponded water and leachate, accounting for more than 77.1% and 83.6% of TN, respectively. The risk of N leaching loss increased significantly under treatment of high percolation rates or high N application levels. High percolation loss required greater irrigation input, thus reducing WP. In addition, N uptake increased with increasing N application, but fertilization applied in excess of crop demand had a negative effect on grain yield. NUE was affected by the amount of N applied and increased with decreasing N levels. Water and N application levels had a significant effect on N uptake of rice, but their interaction on N uptake or NUE was not significant. For the LP and HP regimes, the highest N uptake and WP were obtained with N application levels of 285 kg ha−1 and 210 kg ha−1, respectively. Our overall results suggested that the combination of controlled drainage and water-saving irrigation was a feasible mitigation strategy to reduce N losses through subdrainage percolation and to provide more nutrients available for rice to improve NUE, thus reducing diffuse agricultural pollution. Long-term field trials are necessary to validate the lysimeter results.

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Section: Discussionmentioning

confidence: 97%

Effects of Water and Nitrogen Management on Water Productivity, Nitrogen Use Efficiency and Leaching Loss in Rice Paddies

Chen

et al. 2022

Water

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“…SSI involves irrigating the field to a depth of approximately 1 cm per day after the standing water has dissipated. Increased water productivity and a significant reduction in wasteful water outflows are possible with SSI [26,46,52]. In SSI, efforts are made to maintain soil moisture close to saturation to reduce seepage and percolation.…”

Section: ) Water Consumption and Water Related Characteristics 11) Wa...mentioning

confidence: 99%

The Effect of Irrigation Techniques on Sustainable Water Management for Rice Cultivation System - A Review

Wichaidist,

Intrman,

Puttrawutichai

et al. 2023

App. Envi. Res.

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Rice serves as a fundamental sustenance for approximately half of the global population, particularly in Asia. Nevertheless, the cultivation of rice demands a substantial water supply, and the challenges associated with water deficits have been exacerbated by irregular rainfall patterns induced by global warming. Consequently, there is a critical need to reassess irrigation techniques to effectively tackle these issues. In this comprehensive review, the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) method was employed to systematically explore literature on irrigation techniques aimed at fostering sustainable water management in rice cultivation systems. The primary components of the framework encompass water consumption and water-related characteristics, soil-related characteristics, and plant-related characteristics, encompassing relevant components and indicators. Two alternative irrigation methods, namely alternate wetting and drying (AWD) and saturated soil irrigation (SSI), have been proposed to enhance water use efficiency (WUE) in rice cultivation compared to traditional continuous flooding (CF). These alternative irrigation methods do not adversely affect rice yield, both quantitatively and qualitatively. Furthermore, these alternative irrigation approaches have the potential to mitigate greenhouse gas (GHG) emissions, particularly methane emissions, in rice production. This review underscores the significance of data on alternate irrigation systems, providing valuable insights for researchers and policymakers in formulating strategies that align at every level for practical implementation. This is crucial as it is relevant to multiple organizations and stakeholders. Moreover, in the face of inclement weather conditions resulting from climate change, the study's findings indicate that research on farmers' adaptation, plant stress, and resilience within the rice cultivation system is still in its nascent stages. This highlights the pressing need for further exploration and advancement in these areas to develop effective strategies for coping with the challenges posed by climate change.

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“…Measured by high yield and water use efficiency, AWD and moderate drying will promote the growth of rice (Thakur et al, 2018). The study showed that the water productivity of rice was increased by 61% by applying 50% deficit irrigation (Jonubi et al, 2018). AWD reduces water consumption by 23%–33%, thus effectively improving water use efficiency (Carrijo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Current status of global rice water use efficiency and water‐saving irrigation technology recommendations

Haonan,

Jie,

Shihong

et al. 2023

J Agronomy Crop Science

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Rice has a high water requirement, but water use efficiency (WUE) in rice has always been low, and the status of rice WUE and the factors influencing it in various countries around the world is currently unclear. Therefore, this paper collected 56 articles from 2000 to 2022, through which WUE data from different countries and different provinces in China were collated, and the effects of various water‐saving irrigation technologies on WUE of rice and irrigation water use were analysed using the method of Meta‐analysis. The results of this paper show that rice WUE is low in most countries, with the lowest WUE of 0.28 kg/m3 in Thailand and the highest WUE of 1.25 kg/m3 in Bangladesh among the countries included in this study, and flood irrigation is used in most countries. Compared to flood irrigation, all water‐saving irrigation involved can increase rice WUE and reduce irrigation water input, alternate wet and dry irrigation (W1), and controlled irrigation (W2) were able to increase the WUE of rice by 49.86%, 84.74%, and reduce the irrigation water input by 36.55%, 39.55% respectively. Among the six types of water‐saving irrigation input, dry cultivation (W3) had the most significant effect on increasing WUE and reducing irrigation water, reaching 2.02 times and 67.53%, respectively. Based on the annual rainfall (R) and the application of water‐saving irrigation in Asia, sub‐regionally applicable water‐saving irrigation technologies are recommended. W3 is recommended when R <200 mm, W2 is recommended when 200 mm < R < 800 mm, and W1/W2/shallow alternate wet and dry irrigation (W5) is recommended when R >800 mm. According to the data collected in this paper, W1, W2, W3, and W5 can save 3.40 × 1011 m3, 3.78 × 1011 m3, 2.52 × 108 m3, 2.22 × 1011 m3 of irrigation water, respectively. Based on the calculations in this paper, different water‐saving irrigation techniques can save 3.50 × 1011 m3 of water in Asia according to the recommendations. To promote water‐saving irrigation technology, countries need to formulate policies to ensure the development of water‐saving irrigation technology, raise farmers' awareness of water conservation, and provide training and financial support. Promoting the use of different water‐saving irrigation technologies for different regions can significantly reduce irrigation water and increase the WUE of rice, which is important in addressing the challenges of global water scarcity.

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Enhancing field scale water productivity for several rice cultivars under limited water supply

Cited by 10 publications

References 26 publications

Effects of Water and Nitrogen Management on Water Productivity, Nitrogen Use Efficiency and Leaching Loss in Rice Paddies

Effects of Water and Nitrogen Management on Water Productivity, Nitrogen Use Efficiency and Leaching Loss in Rice Paddies

The Effect of Irrigation Techniques on Sustainable Water Management for Rice Cultivation System - A Review

Current status of global rice water use efficiency and water‐saving irrigation technology recommendations

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