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

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.

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 PRINOS SOJE U ZAVISNOSTI OD VREMENA PRIMENE NPK ĐUBRIVA

2021 ◽  
Author(s):  
Vojin Đukic ◽  
◽  
Jegor Miladinovic ◽  
Zlatica Miladinov Mamlic ◽  
Gordana Dozet ◽  
...  
Keyword(s):  
Nitrogen Fertilizer ◽  
Cultural Practices ◽  
Weather Conditions ◽  
Fertilizer Application ◽  
Npk Fertilizers ◽  
Soybean Yield ◽  
Spring Period ◽  
Full Effect ◽  
Npk Fertilizer ◽  
The Impact

Soybean yield depends on the variety, soil, cultural practices, as well as the weather conditions in certain years. The aim of this research is to examine the impact of NPK fertilizer application in the autumn and spring period on the level of soybean yield. The highest soybean yields were achieved by applying NPK fertilizer in autumn, before the basic tillage with spring application of nitrogen fertilizer AN. Spring application of NPK fertilizers and AN increases the yield, but the effect of fertilizers is significantly less compared to autumn application. The application of nitrogen fertilizer AN increases the soybean yield, and in order for this fertilizer to show its full effect, it is necessary for the soil to be optimally provided with macroelements.

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.

1033 REDUCING NITROGEN FERTILIZER APPLICATIONS BY BALANCING THE NITROGEN SULFUR RATIO

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 576d-576
Author(s):  
Ellen T. Paparozzi
Keyword(s):  
Groundwater Contamination ◽  
Nitrogen Fertilizer ◽  
Nutrient Balance ◽  
Ornamental Plants ◽  
Consumer Perceptions ◽  
Consumer Acceptance ◽  
Statistical Techniques ◽  
Physiological Processes ◽  
The Impact ◽  
Future Plans

Fertilizer particularly nitrogen is part of the concern about groundwater contamination. Many floricultural and ornamental plants do not need the high rates of nitrogen that are typically recommended. However, whenever one alters the quantity of a given nutrient the overall nutrient balance, as well as other physiological processes, changes. A brief overview of our research on poinsettias, roses, and chrysanthemums will be presented. Suggested ratios, critical S levels and nutrient problems associated with incorrect balances will be shared. Limitations due to statistical methods and the impact nutrient balance has on certain plant processes such as flowering and coloring and thus, consumer acceptance will be summarized. Future plans in this area may focus on the need for new statistical techniques, nutrient acquisition by roots and consumer perceptions of plant quality.

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