Effects of Deep-Flooding Irrigation on Growth, Canopy Structure and Panicle Weight Yield Under Different Planting Patterns in Rice

Ohe, Masamichi; Okita, Norikoi; Daimon, Hiroyuki

doi:10.1626/pps.13.193

Cited by 14 publications

(10 citation statements)

References 15 publications

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“…Therefore, fewer panicles of an inferior stem, such as secondary tillers or primary tillers from a higher node, were observed under DFI than under CWI. This suppression of tillering and concomitant increase in the percentage of productive stems are consistent with the results from other studies (Furuya et al 1991, Miura et al 2001, Ohe et al 2010. Decreasing the basal dressing and a deeper placement of the top dressing have reportedly been effective in increasing the percentage of productive stems (Tanaka 1971).…”

Section: Water Management By Deep-flood Irrigationsupporting

confidence: 90%

“…DFI applied at the tillering stage can control the growth of rice plants by suppressing the formation of lateemerging weak tillers (Furuya et al 1991, Ohe et al 2010. Weak tillers become inferior stems or eventually die before heading, and a suppression of weak tillers has been shown to improve the sink-source balance (Furuya et al 1991, Miura et al 2001, Ohe et al 2010. Such improvements could reduce the occurrence chalky grains as a poor accumulation of carbohydrates caused by a low source ability to sink is probably a major cause of chalky grains.…”

Section: Introductionmentioning

confidence: 99%

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Improvement in Rice Grain Quality by Deep-flood Irrigation and its Underlying Mechanisms

Chiba

Terao

Watanabe

et al. 2017

JARQ

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The increased occurrence of chalky rice grains as a result of global warming is becoming a serious problem. The application of deep-flood irrigation (DFI) to a water depth of 18 cm from the active tillering stage to the maximum tillering stage suppresses the occurrence of chalky grains under both high and normal temperature conditions without decreasing yields. The mechanism by which DFI reduces chalky grains was analyzed relative to carbohydrate supply as carbohydrate deficiencies have been proposed as a cause of chalky grains. DFI suppresses the occurrence of chalky grains due to the increased supply of carbohydrates to the panicles. In paddy fields where a water depth of 18 cm is not possible, such as in paddy fields with low levees or low water supplies, the combined use of moderate DFI at a water depth of 10 cm with deep planting can be substituted to produce high-quality rice. DFI did not damage root activity at the ripening stage, even in soils with a low redox potential. Although the DFI treatment slightly decreased the penetration resistance of the soil, the bearing capacity was not affected at the time of combine harvest.

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Section: Water Management By Deep-flood Irrigationsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Improvement in Rice Grain Quality by Deep-flood Irrigation and its Underlying Mechanisms

Chiba

Terao

Watanabe

et al. 2017

JARQ

View full text Add to dashboard Cite

show abstract

“…For example, the panicle number in aerobic culture was comparable to, or higher than, that in flooded culture in Japan (Kato et al, 2009b;Matsunami et al, 2009) and in the Philippines (Peng et al, 2006). Standing water sometimes restricts tiller emergence (Ohe et al, 2010), which would reduce panicle number in flooded culture, especially when the rice is transplanted rather than directly seeded (Sudhir-Yadav et al, 2011). Okami et al (2012) showed that high-yielding indica varieties produce more tillers in aerobic culture than in flooded culture.…”

Section: Physiological Attributes That Increase Rice Yield Under Aeromentioning

confidence: 99%

Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy

Kato

Katsura

2014

Plant Production Science

115

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Aerobic culture is a water-saving technique for direct-seeded rice cultivation. Growing rice under continuously unsaturated soil conditions can maximize water-use efficiency and minimize both labor requirements and greenhouse-gas emissions. Under a temperate climate, aerobic culture can produce a rice yield greater than 9 t ha-1 especially in central Japan (11.4 t ha-1). Aerobic culture using large-scale center-pivot sprinklers is being established in the central United States, where yields can surpass 10 t ha-1. However, yields remain at less than 8 t ha-1 in the tropics. The high yield of Japanese aerobic culture is mainly attributed to vigorous nitrogen uptake during the reproductive stage, which allows rice plants to produce more spikelets and biomass. Fertilizer management for aerobic culture must satisfy both the nitrogen demand and control spikelet density to achieve an appropriate sink-source balance. Unfortunately, the poor development of the root system in rice limits its water uptake from unsaturated soil. Adaptive responses such as adventitious root emergence, lateral root branching, and deep root penetration would protect the plants against dehydration stress in aerobic culture. Intermediate plant height with a few large tillers rather than semi-dwarf stature with profuse tillering should be a suitable plant type for aerobic culture, and plants should show leaf expansion despite fluctuations of soil moisture. The development and identification of suitable genotypes and crop management options are underway worldwide for more resource-use efficient and productive aerobic rice culture.

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“…In rice, environmental (De Datta, 1981;Yoshida, 1981), genotypic (Kim & Vergara, 1990;Alam et al, 2009;Gendua et al,. 2009) and agronomic variables such as nutrient supply (Otteson et al, 2008), water management (Elhani et al, 2007;Ohe et al, 2010), plant density (Wu et al, 1998;Ottis & Talbert, 2005) and planting method Thakur et al, 2009) influence the development of emergent tillers and the subsequent plant yield distribution among panicles. Such plasticity provides a promising tool to maximize grain yield through regulation of crop growth although it needs to be based on predictability of tiller dynamics.…”

Section: Methodsmentioning

confidence: 99%

Tillering and yield formation of a temperate Japonica rice cultivar in a Mediterranean rice agrosystem

Martínez-Eixarch¹,

Catala²,

Tomás³

et al. 2015

Span. j. agric. res.

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Rice tillering is a crucial stage for yield formation. Deep understanding of the relationship between tillering dynamics and yield formation in a particular agrosystem is crucial to boost rice productivity. Research on rice tillering is mainly focused on tropical agrosystems whereas less is done in the Mediterranean, with direct water-seeding and Japonica cultivars. This study aims at characterizing tillering dynamics and identifying the main explanatory tillering traits of yield in a Mediterranean rice agrosystem, Ebro Delta (Northern Spain). A temperate Japonica cultivar grown in Spain, Gleva, was utilized. Plants and tillers were tagged to assess emergence and fertility ratios and grain yield; while changes in tillering number over time, yield and yield components for unit area were measured. Plant and tillering dynamics in the Ebro Delta rice fields can be accurately predicted through equations herein provided, which are based either on thermal time or leaf development. Plants grown under regional standard agricultural practices produced up to eight primary tillers of which two or three become productive. Maximum tiller number was the main explanatory variable of yield while high-yielding tillers within a plant are located on nodes with the highest emergence ratios and, after the main stem, they are the major contributors to yield. The decisive role of tiller development on yield along with the predictability of tiller dynamics raises options to optimize grain yield through tillering modulation. In this sense, results from this study suggests the promotion of early tillering followed by inhibition of late tillering as a strategy of tillering regulation.Additional key words: Oryza sativa L.; tillering dynamics; tiller order; yield formation; emergence; fertility; curve fitting; synchrony

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Effects of Deep-Flooding Irrigation on Growth, Canopy Structure and Panicle Weight Yield Under Different Planting Patterns in Rice

Cited by 14 publications

References 15 publications

Improvement in Rice Grain Quality by Deep-flood Irrigation and its Underlying Mechanisms

Improvement in Rice Grain Quality by Deep-flood Irrigation and its Underlying Mechanisms

Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy

Tillering and yield formation of a temperate Japonica rice cultivar in a Mediterranean rice agrosystem

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