Towards an understanding of the high productivity of rice with System of Rice Intensification (SRI) management from the perspectives of soil and plant physiological processes

Toriyama, K.; Ando, Hideyuki

doi:10.1080/00380768.2011.602627

Cited by 20 publications

(4 citation statements)

References 79 publications

(118 reference statements)

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“…In addition to differences in root function, the dynamics of N mineralization in aerobic culture differs from that in flooded culture because of the different chemical and biological conditions (Ramasamy et al, 1997;Ladha et al, 2005). Achieving appropriate proportions of nitrate and ammonium in the soil promotes N uptake by rice plants (Toriyama and Ando, 2011). Hence, the effect of nitrate uptake and assimilation in aerobic culture on dry matter production should be studied comprehensively to explore the possibility of raising the yield potential in aerobic 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

106

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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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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

106

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“…Planting density and nitrogen (N) fertilization are two critical factors varied among rice cropping systems to improve yield (Dobermann et al., ; Fagade & De Datta, ). Under traditional manual cropping, large rice seedlings are generally transplanted at low densities (i.e., sparse planting) to attain high yield (Surridge, ; Toriyama & Ando, ). As agricultural practices have become increasingly efficient, machine transplanting has been increasingly adopted for rice production in China (Qian et al., ).…”

Section: Introductionmentioning

confidence: 99%

High‐density planting with lower nitrogen application increased early rice production in a double‐season rice system

Zheng

Chen

et al. 2020

Agronomy Journal

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High‐density planting is a strategy employed to save resources in crop production, particularly in environmentally friendly double‐season rice (Orvza sativa L.) cropping, where it promotes high grain yield and reduces required nitrogen (N) input. We conducted a field experiment in 2014–2018 to detect the combined effect of increased seedling density and reduced N input on early rice grain yield and N use efficiency (NUE). The higher basic seedling with low N input treatment (T2) had an average grain yield of 7.01 t ha−1, which was 16.3% greater than that of the control (CK). There was a strong linear relationship between grain yield and panicles m−2 (R2 = .82, P < .001). Grain yield increased significantly with above‐ground biomass before the full‐heading stage (R2 = .79, P < .001), which in turn promoted an increase in panicles m−2 (R2 = .85, P < .001). Mean agronomic efficiency (AE) in the T2 treatment was 34.3 kg kg−1 N, which was 48.1% higher than that in the CK treatment. Therefore, increasing seedling density from 62.5 to 176 seedlings number m−2 while reducing inorganic N input in the early season resulted in significantly higher grain yield in hand‐transplanted rice production. Our results indicate that dense planting with N reduction could improve early rice grain yield and enhance NUE.

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“…In addition to the depth and spacing of a drainage system, irrigation, and drainage management practices, hydrological conditions, amounts and types of applied fertilizers, crop characteristics, soil properties, and agricultural operations are major factors affecting nitrate losses through drainage systems. Drainage of paddy soil produces an oxidative environment in the soil layer that will enhance the nitrification of ammonium in the plough-layer soil [36]. Under such circumstances, nitrogen uptake by the rice plants will increase [10,37], resulting in less nitrate leaching.…”

Section: Nitrate Concentration In the Drainage Watermentioning

confidence: 99%

Integrating Irrigation and Drainage Management to Sustain Agriculture in Northern Iran

Darzi‐Naftchali

Ritzema

2018

Sustainability

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In Iran, as in the rest of the world, land and water for agricultural production is under pressure. Integrating irrigation and drainage management may help sustain intensified agriculture in irrigated paddy fields. This study was aimed to investigate the long-term effects of such management strategies in a newly subsurface drained paddy field in a pilot area in Mazandaran Province, northern Iran. Three strategies for managing subsurface drainage systems were tested, i.e., free drainage (FD), midseason drainage (MSD), and alternate wetting and drying (AWD). The pilot area consisted of subsurface drainage systems, with different combinations of drain depth (0.65 and 0.90 m) and spacing (15 and 30 m). The traditional surface drainage of the region’s consolidated paddy fields was the control. From 2011 to 2017, water table depth, subsurface drainage system outflow and nitrate, total phosphorous, and salinity levels of the drainage effluent were monitored during four rice- and five canola-growing seasons. Yield data was also collected. MSD and AWD resulted in significantly lower drainage rates, salt loads, and N losses compared to FD, with MSD having the lowest rates. Phosphorus losses were low for all three practices. However, AWD resulted in 36% higher rice yields than MSD. Subsurface drainage resulted in a steady increase in canola yield, from 0.89 ton ha−1 in 2011–2012 to 2.94 ton ha−1 in 2016–2017. Overall, it can be concluded that managed subsurface drainage can increase both water productivity and crop yield in poorly drained paddy fields, and at the same time reduce or minimize negative environmental effects, especially the reduction of salt and nutrient loads in the drainage effluent. Based on the results, shallow subsurface drainage combined with appropriate irrigation and drainage management can enable sustained agricultural production in northern Iran’s paddy fields.

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Towards an understanding of the high productivity of rice with System of Rice Intensification (SRI) management from the perspectives of soil and plant physiological processes

Cited by 20 publications

References 79 publications

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

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

High‐density planting with lower nitrogen application increased early rice production in a double‐season rice system

Integrating Irrigation and Drainage Management to Sustain Agriculture in Northern Iran

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