One-Time Root-Zone Nitrogen Fertilisation Allows High Yields and Labour Savings During Oilseed Rape Production in the Yangtze River Delta Region of China

Cheng, Liang; Wang, Huoyan; Lu, Dianjun; Chen, Xiaoqin

doi:10.1007/s42729-021-00716-5

Cited by 6 publications

(1 citation statement)

References 42 publications

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“…Application of N in this method can prolong N retention and reduce potential loss by influencing ammonia-oxidizing archaea and bacteria ( Cheng et al., 2023 ). Studies conducted at field levels through this technique revealed promising results on yield, NUE, or gaseous emissions such as maize ( Jiang et al., 2018 , 2019 ; 2022 ), rice ( Lu et al., 2019 ; Song et al., 2022a ), wheat ( Chen et al., 2016 ; Song et al., 2022b ), and oilseed rape ( Brassica Napus L.) ( Cheng et al., 2022b ), against a conventional split and broadcasting methods. More importantly, the negligible ammonia volatilization (which is nearly close to the control plot) was reported in a transplanted rice field with RZTF technique ( Song et al., 2022a ).…”

Section: Summary and Future Perspectivesmentioning

confidence: 99%

Global evaluation of key factors influencing nitrogen fertilization efficiency in wheat: a recent meta-analysis (2000-2022)

Yokamo,

Irfan,

Huan

et al. 2023

Front. Plant Sci.

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Improving nitrogen use efficiency (NUE) without compromising yield remains a crucial agroecological challenge in theory and practice. Some meta-analyses conducted in recent years investigated the impact of nitrogen (N) fertilizer on crop yield and gaseous emissions, but most are region-specific and focused on N sources and application methods. However, various factors affecting yield and N fertilizer efficiency in wheat crops on a global scale are not extensively studied, thus highlighting the need for a comprehensive meta-analysis. Using 109 peer-reviewed research studies (published between 2000 and 2022) from 156 experimental sites (covering 36.8, 38.6 and 24.6% of coarse, medium, and fine texture soils, respectively), we conducted a global meta-analysis to elucidate suitable N management practices and the key factors influencing N fertilization efficiency in wheat as a function of yield and recovery efficiency and also explained future perspectives for efficient N management in wheat crop. Overall, N fertilization had a significant impact on wheat yield. A curvilinear relationship was found between N rates and grain yield, whereas maximum yield improvement was illustrated at 150-300 kg N ha-1. In addition, N increased yield by 92.18% under direct soil incorporation, 87.55% under combined chemical and organic fertilizers application, and 72.86% under split application. Site-specific covariates (climatic conditions and soil properties) had a pronounced impact on N fertilization efficiency. A significantly higher yield response was observed in regions with MAP > 800 mm, and where MAT remained < 15 °C. Additionally, the highest yield response was observed with initial AN, AP and AK concentrations at < 20, < 10 and 100-150 mg kg-1, respectively, and yield response considerably declined with increasing these threshold values. Nevertheless, regression analysis revealed a declining trend in N recovery efficiency (REN) and the addition of N in already fertile soils may affect plant uptake and RE. Global REN in wheat remained at 49.78% and followed a negative trend with the further increase of N supply and improvement in soil properties. Finally, an advanced N management approach such as “root zone targeted fertilization” is suggested to reduce fertilizer application rate and save time and labor costs while achieving high yield and NUE.

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