Crop yield and soil available potassium changes as affected by potassium rate in rice–wheat systems

Lu, Dianjun; Li, Changzhou; Sokolwski, Eldad; Magen, H.; Chen, Xiaoqin; Wang, Huoyan; Zhang, Jianmin

doi:10.1016/j.fcr.2017.08.025

Cited by 70 publications

(33 citation statements)

References 26 publications

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“…Fertilization is an efficient way to increase rice yield and maintain food security (Lu et al., 2017; Wu et al., 2013). However, K fertilizer is often ignored by farmers compared with N and P fertilizer, which accelerates mining of soil K (Sui et al., 2015; Wang, Lu, Lu, Dai, & Li, 2012; Wu et al., 2014; Xu et al., 2014).…”

Section: Introductionmentioning

confidence: 99%

“…According to a recent study on the Yangtze Plain by Lu et al. (2017), only 144 kg K 2 O ha −1 for wheat ( Triticum aestivum L.) and 192 kg K 2 O ha −1 for rice achieved a positive K balance for the cropping system. In general, rice crop utilized about 162 kg K for a yield of 7.8 t ha −1 , while only 15% of the K was transported to the grain (Che et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

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Yield and potassium uptake of rice as affected by potassium rate in the middle reaches of the Yangtze River, China

Xue

Lü

et al. 2020

Agronomy Journal

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Yield and potassium uptake of rice as affected by potassium rate in the middle reaches of the Yangtze River, China Abstract Potassium is an essential macroelement for rice (Oryza sativa L.), but K deficiency in paddy ecosystems has increased widely and limited sustainable rice production in China. Two-year field trials were conducted with five K levels (0, 60, 120, 180, and 240 kg K 2 O ha -1 , designated as K0, K60, K120, K180, and K240) in Qichun county, Hubei Province, to investigate grain yield, K uptake characteristics, and K use efficiencies of rice. The results showed that application of K increased rice yield by 9.8-29.3%, compared to K0. No significant differences were observed in rice yield among the K120, K180, and K240 treatments. The K uptake in aboveground biomass increased linearly with the K rate, while K harvest index decreased. As K uptake increased, rice yield increased linearly at first and then stabilized, showing the phenomenon of luxury consumption of K. The growth period for fast K uptake in different rice varieties and K levels was 29-67 d after transplanting, and sufficient nutrient supply is needed to ensure the increase of rice yield and growth during this period. Internal use efficiency (IUE), agronomic efficiency (AE), and physiological efficiency (PE) declined as the application rate of K increased. These results indicated that absorption and utilization of K in rice were affected by the K supply rates, and that luxury consumption occurred when K application was excessive. The luxury consumption of K by rice was mainly stored in straw.Abbreviations: AE, agronomic efficiency; F1, Fengliangyouxiang no. 1; H3, Hua'an no. 3; IUE, internal use efficiency; KHI, K harvest index; L6326, Liangyou 6326; PE, physiological efficiency; RIE, reciprocal internal efficiency; t 1 , the beginning peak period; t 2 , peak period; t 3 , the end peak period; v m , the maximum uptake rate of potassium; Y6, Yangliangyou no. 6; Δt, the time of potassium rapid accumulation lasted.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Yield and potassium uptake of rice as affected by potassium rate in the middle reaches of the Yangtze River, China

Xue

Lü

et al. 2020

Agronomy Journal

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“…Based on its morphological characteristics, Suyunuo has many features consistent with japonica rice, such as a compact plant shape, glossy leaf surface, low tiller to spike rate, and thick and dense glume pubescence (Jiang et al, 1986;Wang et al, 1990). However, other characteristics of Suyunuo, such as its tall plant height, light green leaf color, wide and long leaves, and especially its long grain shape, are consistent with indica rice (Lu, 1986;Shi, 1986;Yao and Wang, 1986). In addition to the classification based on morphological characteristics (Jiang et al, 1986;Lu, 1986;Shi, 1986;Yao and Wang, 1986;Wang et al, 1990), some studies have used molecular markers to help classify Suyunuo.…”

Section: Introductionmentioning

confidence: 86%

“…However, other characteristics of Suyunuo, such as its tall plant height, light green leaf color, wide and long leaves, and especially its long grain shape, are consistent with indica rice (Lu, 1986;Shi, 1986;Yao and Wang, 1986). In addition to the classification based on morphological characteristics (Jiang et al, 1986;Lu, 1986;Shi, 1986;Yao and Wang, 1986;Wang et al, 1990), some studies have used molecular markers to help classify Suyunuo. For example, recent studies constructed DNA fingerprint maps of a collection of glutinous rice varieties including Suyunuo, based on SSR molecular markers (Zhu et al, 2012;Chen et al, 2014).…”

Section: Introductionmentioning

confidence: 86%

“…Historically, Suyunuo has often been presented to emperors as a tribute, and, still today, it enjoys a great reputation among Chinese consumers (Jiang et al, 1986). Most studies have considered Suyunuo a japonica variety (Jiang et al, 1986;Wang et al, 1990;He et al, 2006;Chen et al, 2008;Yan et al, 2011;Zhou et al, 2012;Huan et al, 2014), but some have categorized it as an indica variety (Lu, 1986;Shi, 1986;Yao and Wang, 1986). Based on its morphological characteristics, Suyunuo has many features consistent with japonica rice, such as a compact plant shape, glossy leaf surface, low tiller to spike rate, and thick and dense glume pubescence (Jiang et al, 1986;Wang et al, 1990).…”

Section: Introductionmentioning

confidence: 99%

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A two-step method for identification of the Chinese glutinous rice Suyunuo, based on ISSR-SCAR and allele-specific markers

Lin¹,

Zhang²,

Hang³

et al. 2016

Genet. Mol. Res.

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Suyunuo is a valuable glutinous rice variety cultivated mainly in the Lake Taihu area of China. Historically, Suyunuo was presented to emperors as a tribute, and, still today, enjoys a great reputation in China. This study aimed to develop a unique, specific molecular marker for the identification of Suyunuo rice. Polymerase chain reaction (PCR) amplification of inter-simple sequence repeat (ISSR) molecular markers was performed on Suyunuo and 11 other glutinous rice varieties that are mainly cultivated in the Yangtze River Delta region. A Suyunuo-specific band was detected in the PCR products generated from primer ISSR-807. A sequence characterized amplified region (SCAR) primer pair targeting a Suyunuo-specific band was subsequently designed. The SCAR primers amplified a target band in all individuals of Suyunuo and in four glutinous indica varieties, whereas no bands were found in the seven glutinous japonica varieties. Subsequently, sequences amplified by the SCAR primer pair were analyzed to facilitate the design of Suyunuo allele-specific primers. The allele-specific primer pair produced target bands in all individuals of Suyunuo rice but no bands in individuals of any of the other 11 rice varieties. This study provides a theoretical guideline for rice germplasm identification and innovation of other valuable rice landraces.

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Evaluation of soil potassium‐holding capacity based on waterlogging‐simulation experiments

Zhao

Gao

et al. 2021

Agronomy Journal

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Evaluating the capacity and loss risk of soil nutrients is helpful to make fertilization strategies. Herein, the term of soil potassium (K)-holding capacity (SKHC) was put forward to assess the capacity and loss risk of plant-available K of specific soils. In this study, SKHC was evaluated via soil waterlogging-simulation experiments using 14 different soils. The K concentrations in surface water were measured, and a critical K concentration was selected to indicate high soil K loss. Results showed that the surface water K concentration (K sw ) was significantly affected by waterlogging time, temperature, and soil thickness. The average K sw of 5-cm soil columns waterlogged for 24 h for the 14 soils was 5 mg L -1 (1.57-8.57 mg L -1 ); this was subsequently used as the critical K concentration. By repeating the waterlogging simulation experiment with soils treated with different rates of K fertilizer, a quadratic relationship between the K rate and K sw was found and used to determine the K rate required making the K sw reach the critical K concentration. For the 14 soils, SKHC ranged from 133 to 2,054 mg kg -1 and can be classified into four levels: low, <500 mg kg -1 ; moderate, 500-1,000 mg kg -1 ; high, 1,000-1,500 mg kg --1 ; and extremely high, >1,500 mg kg -1 . These results allowed the preliminary establishment of an SKHC evaluation method and grading system. Future studies should verify the SKHC under field conditions and optimize the assessment method proposed in this study. INTRODUCTIONPotassium (K) is the most abundant cation within plants. Although K is not required for tissue formation (Pettigrew, Abbreviations: K critical , critical potassium concentration; K initial , plant-available potassium of initial soil; K sw , potassium concentrations in surface water; K sw-5-24 , potassium concentration in surface water at the waterlogging time of 24 h; NaTPB, sodium tetraphenylborate; NH 4 OAc, ammonium acetate; SKHC, soil potassium-holding capacity.

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Crop yield and soil available potassium changes as affected by potassium rate in rice–wheat systems

Cited by 70 publications

References 26 publications

Yield and potassium uptake of rice as affected by potassium rate in the middle reaches of the Yangtze River, China

Yield and potassium uptake of rice as affected by potassium rate in the middle reaches of the Yangtze River, China

A two-step method for identification of the Chinese glutinous rice Suyunuo, based on ISSR-SCAR and allele-specific markers

Evaluation of soil potassium‐holding capacity based on waterlogging‐simulation experiments

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