Combining alternate wetting and drying irrigation with reduced phosphorus fertilizer application reduces water use and promotes phosphorus use efficiency without yield loss in rice plants

Song, Tao; Xu, Feiyun; Yuan, Wei; Chen, Moxian; Hu, Qijuan; Tian, Yuan; Zhang, Jianhua; Xu, Weifeng

doi:10.1016/j.agwat.2019.105686

Cited by 47 publications

(37 citation statements)

References 52 publications

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“…Importantly, AWD irrigation can reduce water consumption by 30-35% (Zhang et al, 2009). Subsequently, many studies were conducted on the effects of AWD on rice (Cheng et al, 2003;Norton et al, 2017a;Graham-Acquaah et al, 2019;Song et al, 2019;Dossou-Yovo and Saito, 2021). For example, a field study suggested that the grain yield increased under AWD vs. CF, and the rice nutritional quality also increased with lower content of sulfur, calcium, iron, and arsenic, and higher contents of manganese, copper, and cadmium (Norton et al, 2017a).…”

Section: Introductionmentioning

confidence: 99%

Effect of Alternate Wetting and Drying Irrigation on the Nutritional Qualities of Milled Rice

et al. 2021

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Alternate wetting and drying (AWD) irrigation has been widely used to save irrigation water during rice production when compared to the traditionally continuous flooding (CF). Although the influence of AWD on water-saving potential and grain yield has been studied before, its detailed effect on grain nutritional quality in milled rice remains relatively unexplored. In this study, AWD could maintain grain yield as compared with CF. Thus, we undertook efforts to compare the nutritional traits of milled rice irrigated with AWD and CF regimes. A targeted metabolome assay on milled rice identified 74 differentially accumulated metabolites (DAMs) with 22 up- and 52 down-accumulated metabolites under AWD vs. CF. Clustering of the metabolite content obtained in this assay suggested that most of the metabolites showing significant changes belonged to “lipids,” “alkaloids,” and “phenolic acids.” In addition, total protein, starch, lipid, and amino acids content were measured to correlate it with the differential accumulation of specific metabolites detected in the metabolome. Overall, the data suggested that AWD may improve the nutritional performance of milled rice by increasing amino acids and phenolic acids and decreasing lipids and alkaloids. Our study provides research proof for the need for the optimization of irrigation to optimize rice nutritional qualities.

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Section: Introductionmentioning

confidence: 99%

Effect of Alternate Wetting and Drying Irrigation on the Nutritional Qualities of Milled Rice

et al. 2021

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“…A number of water-efficient irrigation technologies have been developed and increasingly applied in different rice producing areas of China. Some of these practices are combined shallow water depth with wetting and drying (SWD), alternate wetting and drying (AWD), semi-dry cultivation (SDC), and rain-gathering irrigation (RGI) (Song et al, 2019;Sujono, Matsuo, Hiramatsu, & Mochizuki, 2011;Towa & Xiangping, 2014;Zhi, 2002).…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic analysis of photosynthesis‐related genes regulated by alternate wetting and drying irrigation in flag leaves of rice

Song

Feng

Das

et al. 2020

Food and Energy Security

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Alternate wetting and drying (AWD) irrigation has been widely used to replace continuous flooding (CF), which does not result in yield loss while improving water productivity. However, it is still unexplored as to how this agricultural practice would affect gene expression to control plant physiology. In this study, we found that photosynthetic rate (Pn), stomatal conductance (Gs), transpiration rate (Tr), chlorophyll (Chl) content, and leaf water potential (Lwp) significantly decreased while abscisic acid (ABA) content and water use efficiency (WUE) increased when soil water potential reached to −15 kPa in the AWD irrigation regime. We then analyzed the differences between AWD and CF irrigation practices in transcriptomic profiles for flag leaves. Genes were found to be differentially expressed in photosynthesis related pathways namely, Chl biosynthesis, photosynthesis‐antenna proteins pathway, photosynthesis process, and ABA signal transduction pathway. The study provides important information on the morphological adaptations observed in the flag leaves in response to AWD irrigation, which will act as a basic framework to conduct molecular studies for improving rice cultivation.

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“…Although the agronomic effects of AWD vary with the duration and severity of soil drying, mild soil water deficits decreased water use by 23% while yields were statistically similar to continuously flooded crops, especially if AWD was applied either during the vegetative growth phase or reproductive growth phase, but not both (Carrijo et al, 2017). Nevertheless, this meta-analysis conceals considerable variation in the agronomic responses at specific sites, such that AWD sometimes significantly increases crop yields even though less water was applied (Mote et al, 2017;Norton et al, 2017a;Song et al, 2019). More detailed measurements of crop physiology are required to understand how AWD improves yield, but mechanisms may include leaf angle changes that allow greater light penetration of the canopy thereby boosting photosynthesis (Price et al, 2013), increasing the proportion of productive tillers (Howell et al, 2015;Mote et al, 2017;Norton et al, 2017a;Yang et al, 2017) and other grain yield components (Rahman and Bulbul, 2014;Li et al, 2018a;Song et al, 2019).…”

Section: Introductionmentioning

confidence: 90%

Alternate wetting and drying irrigation increases water and phosphorus use efficiency independent of substrate phosphorus status of vegetative rice plants

Acosta‐Motos

Rothwell

Massam

et al. 2020

Plant Physiology and Biochemistry

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Combining alternate wetting and drying irrigation with reduced phosphorus fertilizer application reduces water use and promotes phosphorus use efficiency without yield loss in rice plants

Cited by 47 publications

References 52 publications

Effect of Alternate Wetting and Drying Irrigation on the Nutritional Qualities of Milled Rice

Effect of Alternate Wetting and Drying Irrigation on the Nutritional Qualities of Milled Rice

Transcriptomic analysis of photosynthesis‐related genes regulated by alternate wetting and drying irrigation in flag leaves of rice

Alternate wetting and drying irrigation increases water and phosphorus use efficiency independent of substrate phosphorus status of vegetative rice plants

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