Deep placement of controlled-release urea effectively enhanced nitrogen use efficiency and fresh ear yield of sweet corn in fluvo-aquic soil

Liu, Wei; Xiong, Yanmei; Xu, Xiangyu; Xu, Fangsen; Hussain, Saddam; Xiong, Hui; Yuan, Jiafu

doi:10.1038/s41598-019-56912-y

Cited by 27 publications

(10 citation statements)

References 44 publications

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“…Two reasons might be given for the increase of soil TN and AN content to CRU application in staple crops production. Firstly, similar with SOC, CRU facilitate in the growth of crops especially in the advanced stages which lead to more grain yield and biomass, and also increased residues and consequently increase soil TN and AN [ 27 ]. Moreover, it has been demonstrated that CRU significantly decreased N runoff and leaching, nitrous oxide emission and ammonia volatilization [ 28 ].…”

Section: Discussionmentioning

confidence: 99%

Application of controlled release urea improved grain yield and nitrogen use efficiency: A meta-analysis

Zhu

Liu

et al. 2020

PLoS ONE

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The application of controlled release urea (CRU) has been proposed as a crucial method to reduce the adverse environmental effects induced by conventional urea (CU). Yet, a systematic and quantitative analysis on how CRU affects staple crop production including wheat ( Triticum aestivum L .), maize ( Zea mays L .), and rice ( Oryza sativa L .) is lacking. Here, a meta-analysis was conducted to determine how CRU influences soil chemical properties, total nitrogen (TN) uptake, grain yield, and nitrogen use efficiency (NUE) of staple crop in China. The results indicated that CRU application significantly increased soil organic carbon (SOC), TN, and available nitrogen (AN) by 5.93%, 3.89% and 13.98% respectively overall, while soil pH showed no significant changes. Compared to the application of CU, applying CRU significantly increased grain yield by 7.23%, which was mainly owing to the higher TN uptake (9.13%) across all the studies. In addition, the application of CRU significantly increased NUE, nitrogen agronomy efficiency (NAE), utilization rate of nitrogen fertilizer (NUR), and nitrogen physiological efficiency (NPE) by an average of 23.4%, 34.65%, 25.83% and 15.8% respectively which could be attributed to the slow nitrogen (N) release characteristics of CRU. The positive effect of CRU on grain yield and NUE of staple crop was greatest when the content of SOC and TN were extremely low, indicating that it was most effective to improve grain production of infertile soil by applying CRU. The finding of this study indicated that the application of CRU should be promoted for grain production, especially for infertile soil.

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Section: Discussionmentioning

confidence: 99%

Application of controlled release urea improved grain yield and nitrogen use efficiency: A meta-analysis

Zhu

Liu

et al. 2020

PLoS ONE

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“…Soil moisture can facilitate the diffusion of soil dissolved inorganic nitrogen and promote a better contact of soil water with the wheat root system to enhance water and nitrogen use efficiencies 15 , 16 . And in turn, nitrogen fertilizer can contribute to increasing wheat water productivity 17 . It has been reported that, interaction of water and nitrogen are the main factors that affect yield and resource use efficiency of wheat production 18 .…”

Section: Introductionmentioning

confidence: 99%

Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation

Zhang

et al. 2020

Sci Rep

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This study aims to investigate optimization of the basal-top-dressing nitrogen ratio for improving winter wheat grain yield, nitrogen use efficiency, water use efficiency and physiological parameters under supplemental irrigation. A water-saving irrigation (SI) regime was established and sufficient irrigation (UI) was used as a control condition. The split-nitrogen regimes used were based on a identical total nitrogen application rate of 240 kg ha−1 but were split in four different proportions between sowing and the jointing stage; i.e. 10:0 (N1), 7:3 (N2), 5:5 (N3) and 3:7 (N4). Compared with the N1, N2 and N4 treatments, N3 treatment increased grain yield, nitrogen and water use efficiencies by 5.27–17.75%, 5.68–18.78% and 5.65–31.02%, respectively, in both years. The yield advantage obtained with the optimized split-nitrogen fertilizer application may be attributable to greater flag leaf photosynthetic capacity and grain-filling capacity. Furthermore, the N3 treatment maintained the highest nitrogen and water use efficiencies. Moreover, we observed that water use efficiency of SI compared with UI increased by 9.75% in 2016 and 10.79% in 2017, respectively. It can be concluded that SI along with a 5:5 basal-top-dressing nitrogen ratio should be considered as an optimal fertigation strategy for both high grain yield and efficiency in winter wheat.

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“…Controlled-release urea (CRU) is a new type of fertilizer that releases nutrients according to a set mode through polymer coatings and other methods so that the nutrient release keeps pace with crop demand 8 – 10 . Compared with typical nitrogen fertilizer, CRU meets the needs of crops for nitrogen, effectively promotes the growth and development of crops, and simplifies cultivation technology.…”

Section: Introductionmentioning

confidence: 99%

Effects of controlled-release urea combined with fulvic acid on soil inorganic nitrogen, leaf senescence and yield of cotton

Geng

Yang

Xian-qi

et al. 2020

Sci Rep

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A split-plot field experiment was conducted in 2018–2019 to study the effects of nitrogen fertilizer types and fulvic acid (FA) rates on soil nitrogen and cotton growth. The nitrogen fertilizers included controlled-release urea (CRU) and urea, which were applied combined with three FA rates (90, 180 and 270 kg ha-1). The main plot was the nitrogen fertilizer type, and the subplot was the FA rate. The results showed that the lint yield of the FA180 treatment was 5.2–8.6% higher than the FA90 and FA270 treatments. Moreover, moderate FA application markedly improved the cotton leaf SPAD value (chlorophyll relative value), photosynthesis and chlorophyll fluorescence parameters compared with low and high FA rates. Replacing urea with CRU significantly increased the soil inorganic nitrogen and nitrogen use efficiency and also improved cotton fiber quality parameters. Meanwhile, the boll weight and seed yield of the CRU treatments were 1.5–8.4% and 3.3–19.1% higher, respectively, than the urea treatments. The interaction between nitrogen type and FA rate had a positive effect on cotton growth. Thus, the application of CRU combined with 180 kg ha-1 FA on cotton can not only improve the fiber quality and delay leaf senescence but also increase the yield and economic benefit.

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Deep placement of controlled-release urea effectively enhanced nitrogen use efficiency and fresh ear yield of sweet corn in fluvo-aquic soil

Cited by 27 publications

References 44 publications

Application of controlled release urea improved grain yield and nitrogen use efficiency: A meta-analysis

Application of controlled release urea improved grain yield and nitrogen use efficiency: A meta-analysis

Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation

Effects of controlled-release urea combined with fulvic acid on soil inorganic nitrogen, leaf senescence and yield of cotton

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