Dry Matter and N Contributions to the Formation of Sink Size in Early- and Late-maturing Rice under Various N Rates in Central China

Yao, Fengxian; Huang, Jiehua; Cui, Kehui; Peng, Shaobing; Wang, Fei

doi:10.17957/ijab/15.0060

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…Thus, our observations of significantly lower numbers of spikelets m -2 in the submergence treatments than in controls of the two hybrid cultivars (Table 2) likely explains the reduced grain yields produced from the submerged rice. The number of spikelets m -2 was likely determined by the numbers of panicles m -2 and spikelets per panicle (Yao et al, 2016). The number of panicles is affected by the number of tillers at the tillering stage (Ao et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Effects of submergence stress at the vegetative growth stage on hybrid rice growth and grain yield in China

Chen¹,

Song²,

Yan³

et al. 2021

Chil. j. agric. res.

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Submergence stress can greatly limit grain yield of inbred rice (Oryza sativa L.), but the effects of submergence on hybrid rice are unclear. A pot experiment was conducted to clarify the effects of submergence that happens at the vegetative growth stage on two Chinese hybrid rice cultivars. The rice cultivars Zheyou-18, an indica-japonica hybrid, and Yliangyou-689, an indica hybrid, were planted under two treatments, submergence (43 cm depth of tap water for about 2 wk) and control (no submergence). Results showed that the grain yield of submerged 'Yliangyou-689' was 539.0 g m -2 in 2018 and 614.2 g m -2 in 2019; submergence significantly reduced grain yield by 49.6% and 44.2% of that of the control. The lower level of grain yield was attributed to reduced survival rate, numbers of tillers and spikelets, plant dry weight, and crop growth rate, and excessive elongation of stems due to submergence of plants. The grain yield of submerged 'Zheyou-18' was 466.8 g m -2 in 2018 and 376.4 g m -2 in 2019 and neither of which were significantly different from that of the control, indicating higher submergence tolerance in 'Zheyou-18' than in 'Yliangyou-689'. Submergence did not affect plant N and K contents, but it reduced plant N uptake rates by 47.8% to 88.7% and it reduced K uptake rates by 53.9% to 89.5% of that of the control in these two hybrid cultivars. Furthermore, nonsignificant differences were observed in all of the parameters related to rice starch viscosity between control and submergence treatment.

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Section: Discussionmentioning

confidence: 99%

Effects of submergence stress at the vegetative growth stage on hybrid rice growth and grain yield in China

Chen¹,

Song²,

Yan³

et al. 2021

Chil. j. agric. res.

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show abstract

“…For example, Durán et al [61]; Raheem et al [62] demonstrated an increase in dry matter accumulation, the number of panicles and grains per panicle, and a significant increase in rice yield from the combination of emerald palm and chemical fertilizer. Moreover, Yao et al [63] showed that returning rice straw into the field was able to increase the number of effective panicles and the yield of rice.…”

Section: Green Manuring Increased Rice Yield By Increasing Yield-rela...mentioning

confidence: 99%

The Enhancement of Soil Fertility, Dry Matter Transport and Accumulation, Nitrogen Uptake and Yield in Rice via Green Manuring

Li¹,

Ullah²,

He³

et al. 2021

Phyton

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Readily available chemical fertilizers have resulted in a decline in the use of organic manure (e.g., green manures), a traditionally sustainable source of nutrients. Based on this, we applied urea at the rate of 270 kg ha −1 with and without green manure in order to assess nitrogen (N) productivity in a double rice cropping system in 2017. In particular, treatment combinations were as follows: winter fallow rice-rice (WF-R-R), milk vetch rice-rice (MV-R-R), oil-seed rape rice-rice (R-R-R) and potato crop rice-rice (P-R-R). Results revealed that green manure significantly (p ≤ 0.05) improved the soil chemical properties and net soil organic carbon content increased by an average 117.47%, total nitrogen (N) by 28.41%, available N by 26.64%, total phosphorus (P) by 37.77%, available P by 20.48% and available potassium (K) by 33.10% than WF-R-R, however pH was reduced by 3.30% across the seasons. Similarly, net dry matter accumulation rate enhanced in green manure applied treatments and ranked in order:

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Effect of various crop rotations on rice yield and nitrogen use efficiency in paddy–upland systems in southeastern China

et al. 2018

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Dry Matter and N Contributions to the Formation of Sink Size in Early- and Late-maturing Rice under Various N Rates in Central China

Cited by 5 publications

References 22 publications

Effects of submergence stress at the vegetative growth stage on hybrid rice growth and grain yield in China

Effects of submergence stress at the vegetative growth stage on hybrid rice growth and grain yield in China

The Enhancement of Soil Fertility, Dry Matter Transport and Accumulation, Nitrogen Uptake and Yield in Rice via Green Manuring

Effect of various crop rotations on rice yield and nitrogen use efficiency in paddy–upland systems in southeastern China

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