A Laboratory Evaluation of Ammonia Volatilization and Nitrate Leaching following Nitrogen Fertilizer Application on a Coarse-Textured Soil

2015 ◽  
Vol 107 (3) ◽  
pp. 871-879 ◽  
Author(s):  
Xianlong Peng ◽  
Bijesh Maharjan ◽  
Cailian Yu ◽  
Anyu Su ◽  
Virginia Jin ◽  
...  
Keyword(s):  
Nitrate Leaching ◽  
Nitrogen Fertilizer ◽  
Ammonia Volatilization ◽  
Fertilizer Application ◽  
Laboratory Evaluation

scholarly journals Response of Nitrogen Losses to Excessive Nitrogen Fertilizer Application in Intensive Greenhouse Vegetable Production

2019 ◽  
Vol 11 (6) ◽  
pp. 1513 ◽  
Author(s):  
Hui Zhao ◽  
Xuyong Li ◽  
Yan Jiang
Keyword(s):  
Nitrous Oxide ◽  
Nitrate Leaching ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
Application Rate ◽  
Nitrous Oxide Emission ◽  
Ammonia Emission ◽  
Vegetable Production ◽  
Nitric Oxide Emission ◽  
Greenhouse Vegetable

Excessive nitrogen fertilizer application in greenhouse vegetable production (GVP) is of scientific and public concern because of its significance to international environmental sustainability. We conducted a meta-analysis using 1174 paired observations from 69 publications on the effects of nitrogen fertilizer application and reducing nitrogen fertilizer application on the nitrogen losses on a broad scale. We found that the increase in nitrogen loss is much higher than that in production gain caused by excessive application of nitrogen fertilizer: nitrate leaching (+187.5%), ammonium leaching (+28.1%), total nitrogen leaching (+217.0%), nitrous oxide emission (+202.0%), ammonia emission (+176.4%), nitric oxide emission (+543.3%), yield (+35.7%) and nitrogen uptake (+24.5%). Environmental variables respond nonlinearly to nitrogen fertilizer application, with severe nitrate leaching and nitrous oxide emission when the application rate exceeds 570 kg N/ha and 733 kg/N, respectively. The effect of nitrogen fertilizer on yield growth decreases when the application rate exceeds 302 kg N/ha. Appropriate reduction in nitrogen fertilizer application rate substantially mitigates the environmental cost, for example, decreasing nitrate leaching (−32.4%), ammonium leaching (−6.5%), total nitrogen leaching (−37.3%), ammonia emission (−28.4%), nitrous oxide emission (−38.6%) and nitric oxide emission (−8.0%), while it has no significant effect on the nitrogen uptake and yield.

Urea as a nitrogen fertilizer for grass cut for silage

1992 ◽  
Vol 119 (3) ◽  
pp. 373-381 ◽  
Author(s):  
A. Lloyd
Keyword(s):  
Ammonium Nitrate ◽  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Ammonia Volatilization ◽  
Fertilizer Application ◽  
Early Spring ◽  
England And Wales ◽  
High Ph ◽  
Yield Decrease

SUMMARYForty-one experiments were carried out in England and Wales between 1983 and 1985 to compare ammonium nitrate and urea as N top dressings for multicut silage.The results showed that relative dry matter yields from the two fertilizers differed considerably between sites. However, compared with ammonium nitrate, there was a mean yield decrease with urea of 2% at the first cut and 5% at the second cut. Mean herbage N contents and apparent N recoveries were lower with urea than with ammonium nitrate at both the first and second cuts. It appeared, at least for first-cut dressings applied in early spring, that urea effectiveness increased with the amount of rain falling within 3 days of fertilizer application. The effect was much less obvious at the second cut.Urea effectiveness was not markedly reduced on soils of high pH or light texture, where higher ammonia volatilization losses might have been expected.

Modeling the impact of nitrogen fertilizer application and tile drain configuration on nitrate leaching using SWAT

2013 ◽  
Vol 130 ◽  
pp. 36-43 ◽  
Author(s):  
Daniel N. Moriasi ◽  
Prasanna H. Gowda ◽  
Jeffrey G. Arnold ◽  
David J. Mulla ◽  
Srinivasulu Ale ◽  
...  
Keyword(s):  
Nitrate Leaching ◽  
Nitrogen Fertilizer ◽  
Fertilizer Application ◽  
The Impact

Influence of a BactoFil microbiological preparation on the intensity of infection by Rhizoctonia solani and the effects on sugar beet yield and quality

2012 ◽  
pp. 102-109
Author(s):  
Suzana Kristek ◽  
Andrija Kristek ◽  
Dragana Kocevski ◽  
Antonija K. Jankovi ◽  
Dražen Juriši
Keyword(s):  
Sugar Beet ◽  
Rhizoctonia Solani ◽  
Nitrogen Fertilizer ◽  
Soil Analysis ◽  
Block Design ◽  
Sugar Content ◽  
Pathogenic Fungi ◽  
Fertilizer Application ◽  
Beet Root ◽  
Set Up

The experiment was set up on two types of the soil: Mollic Gleysols (FAO, 1998) and Eutric Cambisols where the presence of pathogenic fungi – sugar beet root decay agent – Rhizoctonia solani has been detected since 2005. In a two year study (2008, 2009), the experiment was set up by completely randomized block design in 4 repetitions and 16 different variants. Two beet varieties, Belinda, sensitive to pathogenic fungi R. solani, and Laetitia, tolerant to pathogenic fungi R. solani), were grown. The microbiological preparation BactoFil was applied in different amounts in autumn and spring. In addition, the nitrogen fertilizer application, based on the results of soil analysis, was varied. The following parameters were tested: amount of infected and decayed plants, root yield, sugar content, sugar in molasses and sugar yield. The best results were obtained by applying the microbiological preparation BactoFil, and by 30% reduced nitrogen fertilizer application. Preparation dosage and time of application depended on soil properties.

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