Nitrogen use efficiency in grain production and the estimated nitrogen input/output balance in China agriculture

Li, Shutian; Ping, He; Jin, Jian

doi:10.1002/jsfa.5874

Cited by 27 publications

(14 citation statements)

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“…In an early study, comparing conventional tillage versus conservation tillage, Franzluebbers et al (1995) [26] estimated that, under adequate temperature and moisture conditions, NO 3− accumulated at a rate of ≈0.03 g N m −2 d −1 , which equals to 110 kg N ha −1 year −1 . If 30 kg N (PFPN = 30 kg grain kg −1 N) are required to produce 1000 kg of wheat grain [27], 80 kg N would support yields of around 2600 kg ha −1 , which is close to the mean yields recorded in the control plots in this study during the last three cycles (2870 kg ha −1 ). For the fertilized plots, because mineralization rates would be expected to be higher in fertilized than in the control plots [28], it is estimated that they received a rate of about 230 kg N ha −1 cycle −1 (150 from applied fertilizer + 80 from soil mineralization).…”

Section: Discussionsupporting

confidence: 77%

Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture

et al. 2018

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Sustainable crop production systems can be attained by using inputs efficiently and nitrogen use efficiency (NUE) parameters are indirect measurements of sustainability of production systems. The objective of this study was to investigate the effect of selected nitrogen (N) management treatments on wheat yields, grain and straw N concentration, and NUE parameters, under conservation agriculture (CA). The present study was conducted at the International Maize and Wheat Improvement Center (CIMMYT), in northwest, Mexico. Seventeen treatments were tested which included urea sources, timing, and methods of fertilizer application. Orthogonal contrasts were used to compare groups of treatments and correlation and regression analyses were used to look at the relationships between wheat yields and NUE parameters. Contrasts run to compare wheat yields or agronomic efficiency of N (AE N ) performed similarly. Sources of urea or timing of fertilizer application had a significant effect on yields or AE N (p > 0.050). However, methods of application resulted in a highly significant (p < 0.0001) difference on wheat yields and agronomic efficiency of N. NUE parameters recorded in this study were average but the productivity associated to NUE levels was high. Results in this study indicate that wheat grew under non-critically limiting N supply levels, suggesting that N mineralization and reduced N losses from the soil under CA contributed to this favorable nutritional condition, thus minimizing the importance of N management practices under stable, mature CA systems.

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Section: Discussionsupporting

confidence: 77%

Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture

et al. 2018

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“…No significant differences in the partial factor productivity of nitrogen (kg grain . kg -1 N applied) were found between the conventional and the CULTAN treatment, which according to Li et al (2013) means the same nitrogen use efficiency in both application types of nitrogen fertilizers. Significantly higher nitrogen remobilization efficiency (NRE) was recorded with the CULTAN treatment compared to the conventional treatment in the applications of 150 kg N.ha -1 and 200 kg N.ha -1 when the CULTAN fertilization was carried out at the beginning of tillering (BBCH 22).…”

Section: Discussionmentioning

confidence: 66%

“…A lower accumulation of nitrogen in plant biomass results in higher nitrogen utilization efficiency (Pask et al 2012). Moreover, higher nitrogen rates decrease the efficiency of fertilization ) which can be maintained particularly by excellent management practices (Li et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen uptake by winter wheat (Triticum aestivumL.) depending on fertilizer application

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Balík

Cerny

et al. 2015

Cereal Research Communications

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The influence of the injection of nitrogen fertilizers with the CULTAN system (Controlled Uptake Long Term Ammonium Nutrition) on nitrogen uptake by winter wheat (Triticum aestivum L.) was observed at small-plot field experiments under conditions of the Czech Republic (central Europe) during 2007-2013. The CULTAN system consisting in the injection of all the nitrogen in one dose was compared with conventional broadcast surface fertilization which is carried out in three partial nitrogen doses. The total nitrogen dosage was 150 kg N.ha -1 . If the CULTAN fertilization was carried out at the beginning of tillering of winter wheat (BBCH 22) instead of at the end of tillering (BBCH 29), the CULTAN-treated winter wheat did not suffer from nitrogen deficiency at the BBCH 45 (boot stage) and BBCH 51 (beginning of heading) growth stages. Nitrogen utilization efficiency and biomass production efficiency were significantly higher with the CULTAN treatment compared to the conventional fertilization whereas nitrogen uptake efficiency tended toward lower values with the CULTAN treatment. Nitrogen use efficiency (NUE), post-heading nitrogen uptake, the contribution of nitrogen translocation to the total nitrogen in grain, the partial factor productivity of nitrogen as well as grain yield were not significantly influenced by the CULTAN system. Prolonged nitrogen uptake from the soil with the CULTAN treatment resulting in delayed plant senescence was not confirmed. Neither an application of sulphur-containing fertilizer nor the increased dosage of nitrogen (200 kg N.ha -1 ) positively affected the studied parameters.

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“…Currently, considering all observations from field trials, the average values of IE N , remained within the ranges for general crops summarized by Dobemann (2005), from 30 to 60 kg kg -1 for IE N , 40 to 70 kg kg -1 for PFP N , 10 to 30 kg kg -1 for AE N and 30% to 50 % for RE N , respectively. However, more N input generally occurred compared with other areas of the world, which resulted in relatively lower NUE in China (Ladha et al 2005;Li et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Review grain yield and nitrogen use efficiency in rice production regions in China

ShengGuo

Zhao

et al. 2015

Journal of Integrative Agriculture

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As one of the staple food crops，rice (Oryza sativa L.) is widely cultivated across China, which plays a critical role in guaranteeing national food security. Most previous studies on grain yield or/and nitrogen use efficiency (NUE) of rice in China often involved site-specific field experiments, or small regions with insufficient data, which limited the representation for the current rice production regions. In this study, a database covering a wide range of climate conditions, soil types and field managements across China, was developed to estimate rice grain yield and NUE in various rice production regions in China and to evaluate the relationships between N rates and grain yield, NUE. According to the database for rice, the values of grain yield, plant N accumulation, N harvest index (HI N), Indigenous N supply (INS), internal N efficiency (IE N), reciprocal internal N efficiency (RIE N), agronomic N use efficiency (AE N), partial N factor productivity (PEP N), physiological N efficiency (PE N) and recover efficiency of applied N (RE N) averaged 7.

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Nitrogen use efficiency in grain production and the estimated nitrogen input/output balance in China agriculture

Abstract: The great challenge is to balance the use of current N fertilisers between regions and crops to improve N use efficiency while maintaining or increasing crop production under the high-intensity agricultural system of China.

Cited by 27 publications

References 13 publications

Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture

Assessment of Fertilizer Management Strategies Aiming to Increase Nitrogen Use Efficiency of Wheat Grown Under Conservation Agriculture

Nitrogen uptake by winter wheat (Triticum aestivumL.) depending on fertilizer application

Review grain yield and nitrogen use efficiency in rice production regions in China

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