Interaction of deep placed controlled-release urea and water retention agent on nitrogen and water use and maize yield

2016 ◽  
Vol 75 ◽  
pp. 118-129 ◽  
Author(s):  
Liwei Guo ◽  
Tangyuan Ning ◽  
Liangpeng Nie ◽  
Zengjia Li ◽  
Rattan Lal
Keyword(s):  
Controlled Release ◽  
Water Use ◽  
Water Retention ◽  
Maize Yield ◽  
Controlled Release Urea

Maize yield and economic return with controlled-release urea

2019 ◽  
Vol 115 (3) ◽  
pp. 427-440
Author(s):  
Hongyin Zhou ◽  
Min Zhang ◽  
Zhiguang Liu ◽  
Wenkui Zheng ◽  
Qiang Zhu ◽  
...  
Keyword(s):  
Controlled Release ◽  
Maize Yield ◽  
Economic Return ◽  
Controlled Release Urea

Preparation and characterization of triple polymer-coated controlled-release urea with water-retention property and enhanced durability

2010 ◽  
Vol 120 (4) ◽  
pp. 2103-2111 ◽  
Author(s):  
Shuming Tao ◽  
Jun Liu ◽  
Kemo Jin ◽  
Xiaoyun Qiu ◽  
Yuan Zhang ◽  
...  
Keyword(s):  
Controlled Release ◽  
Water Retention ◽  
Controlled Release Urea

scholarly journals Impact of controlled release urea on maize yield and nitrogen use efficiency under different water conditions

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0181774 ◽  
Author(s):  
Guanghao Li ◽  
Bin Zhao ◽  
Shuting Dong ◽  
Jiwang Zhang ◽  
Peng Liu ◽  
...  
Keyword(s):  
Controlled Release ◽  
Nitrogen Use Efficiency ◽  
Maize Yield ◽  
Nitrogen Use ◽  
Water Conditions ◽  
Use Efficiency ◽  
Controlled Release Urea

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.

scholarly journals Optimizing Grain Yield and Water Use Efficiency Based on the Relationship between Leaf Area Index and Evapotranspiration

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 313
Author(s):  
Guoqiang Zhang ◽  
Bo Ming ◽  
Dongping Shen ◽  
Ruizhi Xie ◽  
Peng Hou ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Leaf Area Index ◽  
Water Use ◽  
Plant Density ◽  
Maize Yield ◽  
Area Index ◽  
Irrigation Level ◽  
Use Efficiency ◽  
The Relationship

Achieving optimal balance between maize yield and water use efficiency is an important challenge for irrigation maize production in arid areas. In this study, we conducted an experiment in Xinjiang China in 2016 and 2017 to quantify the response of maize yield and water use to plant density and irrigation schedules. The treatments included four irrigation levels: 360 (W1), 480 (W2), 600 (W3), and 720 mm (W4), and five plant densities: 7.5 (D1), 9.0 (D2), 10.5 (D3), 12.0 (D4), and 13.5 plants m−2 (D5). The results showed that increasing the plant density and the irrigation level could both significantly increase the leaf area index (LAI). However, LAI expansion significantly increased evapotranspiration (ETa) under irrigation. The combination of irrigation level 600 mm (W3) and plant density 12.0 plants m−2 (D4) produced the highest maize yield (21.0–21.2 t ha−1), ETa (784.1–797.8 mm), and water use efficiency (WUE) (2.64–2.70 kg m−3), with an LAI of 8.5–8.7 at the silking stage. The relationship between LAI and grain yield and evapotranspiration were quantified, and, based on this, the relationship between water use and maize productivity was analyzed. Moreover, the optimal LAI was established to determine the reasonable irrigation level and coordinate the relationship between the increase in grain yield and the decrease in water use efficiency.

scholarly journals Using irrigation intervals to optimize water-use efficiency and maize yield in Xinjiang, northwest China

2019 ◽  
Vol 7 (3) ◽  
pp. 322-334 ◽  
Author(s):  
Guoqiang Zhang ◽  
Dongping Shen ◽  
Bo Ming ◽  
Ruizhi Xie ◽  
Xiuliang Jin ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Maize Yield ◽  
Northwest China ◽  
Use Efficiency
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