The effects of controlled release urea on maize productivity and reactive nitrogen losses: A meta-analysis

2019 ◽  
Vol 246 ◽  
pp. 559-565 ◽  
Author(s):  
Wushuai Zhang ◽  
Zhengyuan Liang ◽  
Xiaoming He ◽  
Xiaozhong Wang ◽  
Xiaojun Shi ◽  
...  
Keyword(s):  
Controlled Release ◽  
Meta Analysis ◽  
Nitrogen Losses ◽  
Reactive Nitrogen ◽  
Maize Productivity ◽  
Controlled Release Urea

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

PLoS ONE ◽  
2020 ◽  
Vol 15 (10) ◽  
pp. e0241481
Author(s):  
Shuhao Zhu ◽  
Liyuan Liu ◽  
Yan Xu ◽  
Yanying Yang ◽  
Rongguang Shi
Keyword(s):  
Controlled Release ◽  
Grain Yield ◽  
Nitrogen Use Efficiency ◽  
Meta Analysis ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
Controlled Release Urea

Nitrogen losses, use efficiency, and productivity of early rice under controlled-release urea

2018 ◽  
Vol 251 ◽  
pp. 78-87 ◽  
Author(s):  
Pengfei Li ◽  
Jianwei Lu ◽  
Yang Wang ◽  
Sen Wang ◽  
Saddam Hussain ◽  
...  
Keyword(s):  
Controlled Release ◽  
Nitrogen Losses ◽  
Use Efficiency ◽  
Efficiency And Productivity ◽  
Early Rice ◽  
Controlled Release Urea

Recent Advancements on Superabsorbent Polymers to Produce Controlled Release Urea (Short Review)

2014 ◽  
Vol 625 ◽  
pp. 761-765
Author(s):  
Babar Azeem ◽  
Ku Zilati Ku Shaari ◽  
Zakaria Man ◽  
Duvvuri Subbarao
Keyword(s):  
Controlled Release ◽  
Short Review ◽  
Polymer Materials ◽  
Nitrogen Losses ◽  
Special Focus ◽  
Superabsorbent Polymer ◽  
Coating Materials ◽  
Superabsorbent Polymers ◽  
Controlled Release Urea

Controlled release urea (CRU) is produced to avoid nitrogen losses caused by volatilization, leaching and denitrification. Superabsorbent polymer materials have recently caught the attention of research circles to be used as coating materials to produce CRU. This review portrays recent advancements on the use of superabsorbent polymer materials to produce CRU with special focus on release experiments.

Optimization of Pan Coating Process for Increased Efficiency of Controlled-Release Urea Fertilizer

2021 ◽  
Vol 57 (4) ◽  
pp. 333-342
Author(s):  
Trung Huu Nguyen ◽  
Tran Nguyen Minh An ◽  
Mahboob Alam ◽  
Duc Hoai Tran ◽  
Nghi Tran ◽  
...  
Keyword(s):  
Controlled Release ◽  
Layer Thickness ◽  
Release Time ◽  
Coating Process ◽  
Analysis Method ◽  
Sauter Mean Diameter ◽  
Urea Fertilizer ◽  
The Relationship ◽  
Central Composite ◽  
Controlled Release Urea

The goal of the research is to develop an experimental mathematical model of pan coating process effect on the biodegradable polymer and to determine optimal process parameters. The polymer solution was conducted with phosphated di-starch phosphate, polyvinyl alcohol, and polyacrylic acid and performed as material coating for the controlled-release urea fertilizer. The image analysis method has been used to determine the particle size distribution, Sauter mean diameter of the particle and layer thickness that is novel. The central composite rotatable design has been selected to determine the regression models of the process, which described the relationship between two objective variables as layer thickness, release time with angle of pan, spray flow, and coating time. The statistical analysis results indicate the fitness of model.

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