Ratoon rice technology: A green and resource-efficient way for rice production

Wang, Weiqin; He, Aibin; Jiang, Guanglei; Sun, Hong; Min, Jiyoung; Man, Jianguo; Ling, Xiaoxia; Cui, Kehui; Huang, Jikun; Peng, Shaobing; Nie, Lei

doi:10.1016/bs.agron.2019.07.006

Cited by 98 publications

(74 citation statements)

References 58 publications

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“…Germination of axillary buds is considered to be controlled by apical dominance (Wang et al., 2020). Many studies suggest that plant hormones play an important role of the germination of axillary buds (Azizi et al., 2015).…”

Section: Discussionmentioning

confidence: 99%

Breaking rice yield barrier with the ratooning method under changing climatic conditions: A paradigm shift in rice‐cropping systems in southwestern Japan

et al. 2020

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Rice (Oryza sativa L.) ratooning has recently attracted attention since it possesses higher yield potential compared to conventional rice-growing methods; however, it requires a longer growing season. Field experiments were conducted in southwestern Japan in 2017 and 2018 to determine the effect of harvest time (early and normal) and cutting height (high and low) of the first crop on grain yield of the first and second crops using a high-yielding line under high N application and high air temperature conditions in rice ratooning. The highest total yield of the first and second crops was produced when the first crop was harvested at the normal time with the high cutting height in 2018. This yield reached 14.4 t ha −1 , which is equivalent to threefold the average yield achieved by Japanese farmers. Plants harvested at the high cutting height produced higher grain yield of the second crop because of the larger spikelet number m −2 and better grain filling using abundant leaf area index (LAI) and nonstructural carbohydrate (NSC) in the stubble. In southwestern Japan, the daily mean air temperatures during the early growth stage of the first crop and the late ripening stage of the second crop have been increasing over time. Our results suggest that increasing LAI and NSC in the stubble by harvesting at the normal time harvest with the high cutting height under high level N application conditions may provide an adaptive strategy to increase yield with a rice-ratooning system as growing seasons extend due to global climate change. 1 INTRODUCTION Global average temperatures increased by 0.85 • C between 1880 and 2012 (IPCC, 2014). By the end of this century, Abbreviations: HI, harvest index; HI net , net harvest index; LAI, leaf area index; NSC, nonstructural carbohydrate This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Section: Discussionmentioning

confidence: 99%

Breaking rice yield barrier with the ratooning method under changing climatic conditions: A paradigm shift in rice‐cropping systems in southwestern Japan

et al. 2020

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“…Ratoon cropping is a cultivation technique applied in the agronomical practice of various crops since a long time ago (Plucknett et al 1970;Wang et al 2020). New shoots (ratoon) emerge from the base of a plant following cropping, a practice that facilitates green and resource-efficient production (Wang et al 2020).…”

Section: Edu and O 3 Carry-over Effects Following Shoots Harvest And Cutting Re-growth In The Third Growing Season (2016)mentioning

confidence: 99%

Ethylenediurea (EDU) spray effects on willows (Salix sachalinensis F. Schmid) grown in ambient or ozone-enriched air: implications for renewable biomass production

et al. 2021

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Ground-level ozone (O3) is a widespread air pollutant causing extensive injuries in plants. However, its effects on perennial energy crops remain poorly understood due to technical difficulties in cultivating fast-growing shrubs for biomass production under O3 treatment on the field. Here we present the results of a two-year evaluation in the framework of which willow (Salix sachalinensis F. Schmid) shrubs were exposed to ambient (AOZ) or elevated (EOZ) O3 in two successive growing seasons (2014, 2015) and treated with 0 (EDU0) or 400 mg L−1 (EDU400) ethylenediurea spray in the second growing season. In 2014, EOZ altered the chemical composition of both top young and fallen leaves, and a novel mechanism of decreasing Mg in fallen leaves while highly enriching it in young top leaves was revealed in shrubs exposed to EOZ. In 2015, EDU400 alleviated EOZ-induced decreases in leaf fresh mass to dry mass ratio (FM/DM) and leaf mass per area (LMA). While EDU400 protected against EOZ-induced suppression of the maximum rate at which leaves can fix carbon (Amax) in O3-asymptomatic leaves, it did not alleviate EOZ-induced suppression of the maximum rates of carboxylation (VCmax) and electron transport (Jmax) and chlorophylls a, b, and a + b in the same type of leaves. In O3-symptomatic leaves, however, EDU400 alleviated EOZ-induced suppression of chlorophylls a and a + b, indicating different mode of action of EDU between O3-asymptomatic and O3-symptomatic leaves. Extensive herbivory occurred only in AOZ-exposed plants, leading to suppressed biomass production, while EOZ also led to a similar suppression of biomass production (EDU0 × EOZ vs. EDU400 × EOZ). In 2016, carry-over effects were also evaluated following cropping and transplantation into new ambient plots. Effects of EOZ in the preceding growing seasons extended to the third growing season in the form of suppressed ratoon biomass production, indicating carry-over effect of EOZ. Although EDU400 protected against EOZ-induced suppression of biomass production when applied in 2015, there was no carry-over effect of EDU in the absence of EDU treatment in 2016. The results of this study provide novel mechanistic understandings of O3 and EDU modes of action and can enlighten cultivation of willow as energy crop.

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“…Ratooning can be explained by apical dominance (Wang et al, 2020), which is a phenomenon observed in plants that involves the inhibition of axillary bud outgrowth by the shoot apex. Auxin was long considered to be an important regulator of apical dominance (Thimann & Skoog et al, 1934); however, Mason et al (2014) revealed that the initial regulator is the intense demand for sugars in the shoot apex.…”

Section: Introductionmentioning

confidence: 99%

Grain yield response to stubble leaf blade clipping in rice ratooning in southwestern Japan

et al. 2021

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Rice (Oryza sativa L.) ratooninghas recently attracted attention due to its higher yield potential compared with that of conventional methods. Field experiments were conducted in southwestern Japan in 2019 and 2020 to determine the effect of rice type ) and stubble leaf treatment (clipping and control) on the grain yields of the first and second crops in rice ratooning. In 2019, both rice types produced lower grain yields of the second crop in the leaf clipping treatment than the control treatment due to the lower spikelet number m −2 . Therefore, increasing the leaf area index (LAI) in the stubble may improve the grain yield of the second crop by increasing the spikelet number per area. In 2020, HYL produced a lower grain yield of the second crop in the leaf clipping treatment than the control treatment due to the lower spikelet number m −2 . However, the grain yields of Hokuriku 193 did not differ between the two leaf clipping treatments. Although the nonstructural carbohydrate (NSC) content in the stubble did not differ between the two rice types in 2019, Hokuriku 193 had a higher NSC content than HYL in 2020 due to the lower spikelet number m −2 and lower percentage of filled spikelets of the first crop. These results suggest that the stubble leaf blade contribution may be reduced when the NSC content is high as the leaf blades may compensate for the lack of NSC content when the NSC content is low.

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Ratoon rice technology: A green and resource-efficient way for rice production

Cited by 98 publications

References 58 publications

Breaking rice yield barrier with the ratooning method under changing climatic conditions: A paradigm shift in rice‐cropping systems in southwestern Japan

Breaking rice yield barrier with the ratooning method under changing climatic conditions: A paradigm shift in rice‐cropping systems in southwestern Japan

Ethylenediurea (EDU) spray effects on willows (Salix sachalinensis F. Schmid) grown in ambient or ozone-enriched air: implications for renewable biomass production

Grain yield response to stubble leaf blade clipping in rice ratooning in southwestern Japan

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