Bentonite hydrochar composites mitigate ammonia volatilization from paddy soil and improve nitrogen use efficiency

2020 ◽  
Vol 718 ◽  
pp. 137301 ◽  
Author(s):  
Qingnan Chu ◽  
Sheng Xu ◽  
Lihong Xue ◽  
Yang Liu ◽  
Yanfang Feng ◽  
...  
Keyword(s):  
Nitrogen Use Efficiency ◽  
Paddy Soil ◽  
Ammonia Volatilization ◽  
Nitrogen Use ◽  
Use Efficiency

Combining Azolla and urease inhibitor to reduce ammonia volatilization and increase nitrogen use efficiency and grain yield of rice

2020 ◽  
Vol 743 ◽  
pp. 140799
Author(s):  
Guoying Yang ◽  
Hongting Ji ◽  
Jing Sheng ◽  
Yuefang Zhang ◽  
Yanfang Feng ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Ammonia Volatilization ◽  
Urease Inhibitor ◽  
Nitrogen Use ◽  
Use Efficiency

Floating duckweed mitigated ammonia volatilization and increased grain yield and nitrogen use efficiency of rice in biochar amended paddy soils

Chemosphere ◽  
2019 ◽  
Vol 237 ◽  
pp. 124532 ◽  
Author(s):  
Haijun Sun ◽  
Dan A ◽  
Yanfang Feng ◽  
Meththika Vithanage ◽  
Sanchita Mandal ◽  
...  
Keyword(s):  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Ammonia Volatilization ◽  
Paddy Soils ◽  
Nitrogen Use ◽  
Use Efficiency

Controlled-release urea decreased ammonia volatilization and increased nitrogen use efficiency of cotton

2017 ◽  
Vol 180 (6) ◽  
pp. 667-675 ◽  
Author(s):  
Xiaofei Tian ◽  
Jibiao Geng ◽  
Yanle Guo ◽  
Chengliang Li ◽  
Min Zhang ◽  
...  
Keyword(s):  
Controlled Release ◽  
Nitrogen Use Efficiency ◽  
Ammonia Volatilization ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Controlled Release Urea

scholarly journals Application of biochar-coated urea controlled loss of fertilizer nitrogen and increased nitrogen use efficiency

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yiman Jia ◽  
Zhengyi Hu ◽  
Yuxin Ba ◽  
Wenfang Qi
Keyword(s):  
Oilseed Rape ◽  
Nitrogen Uptake ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Fertilizer ◽  
Ammonia Volatilization ◽  
Nitrogen Loss ◽  
Nitrogen Use ◽  
Coated Urea ◽  
Use Efficiency ◽  
The Impact

Abstract Background The use of biochar-based N fertilizers have been considered among the most effective strategy for reducing nitrogen loss and improving nitrogen use efficiency (NUE). However, effect and mechanism of biochar-coated urea (BCU) controlling the loss of nitrogen from soil and NUE are rarely reported. Methodology In this study, a 65-d culture pot experiment of oilseed rape was used to investigate the impact of BCU on nitrogen leaching, ammonia volatilization, soil nitrogen concentrations, soil pH, nitrogen uptake, NUE and oilseed rape biomass as compared with urea and urea combined with biochar at same nitrogen level. Results Results showed that the application of BCU could minimize nitrogen loss mainly by reducing nitrate leaching loss; which could be attributed to the slow-release performance of BCU, followed by biochar induced adsorption/fixation of nitrogen due to the porous nature and surface functional groups of biochar. However, the application of BCU enhanced ammonia volatilization due to the increase of soil NH4+–N concentration and pH value of microenvironment around urea by BCU. The application of BCU increased NUE by about 20% when compared with urea, since BCU reduced losses of nitrogen fertilizer and increased concentration of nitrogen in the soil as well as nitrogen uptake in oilseed rape. Furthermore, the reduction of nitrogen application by 20% when BCU served as a nitrogen source not only reduced nitrogen loss but significantly improved NUE, with no negative effect on the biomass of oilseed rape. Conclusion BCU can serve as a promising control release nitrogen fertilizer for reducing loss of nitrogen and increasing NUE. However further investigations are required to validate the dosage-effect relationship of BCU on crop yield at the field scale.

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