scholarly journals Crop and tillage management effects on water flow and nitrate-nitrogen loss through subsurface drains

1995 ◽  
Author(s):  
David L. Bjorneberg
Keyword(s):  
Water Flow ◽  
Nitrate Nitrogen ◽  
Nitrogen Loss ◽  
Subsurface Drains ◽  
Management Effects

SIMULATING WATER FLOW AND SALT LEACHING UNDER SEQUENTIAL FLOODING BETWEEN SUBSURFACE DRAINS

2013 ◽  
Vol 63 (1) ◽  
pp. 112-122 ◽  
Author(s):  
M. S. Mirjat ◽  
A. Q. Mughal ◽  
A. S. Chandio
Keyword(s):  
Water Flow ◽  
Salt Leaching ◽  
Subsurface Drains

scholarly journals Supplemental data for "Effectiveness of Nutrient Management on Water Quality Improvement: A Synthesis on Nitrate-Nitrogen Loss from Subsurface Drainage"

2021 ◽  
Author(s):  
Wenlong Liu ◽  
Yongping Yuan ◽  
Lydia Koropeckyj-Cox
Keyword(s):  
Water Quality ◽  
Quality Improvement ◽  
Nutrient Management ◽  
Nitrate Nitrogen ◽  
Nitrogen Loss ◽  
Journal Article ◽  
Subsurface Drainage ◽  
Original Study ◽  
Raw Data ◽  
Water Quality Improvement

This file includes information (references, study location, raw data extracted from original study) used to produce the journal article.

scholarly journals Irrigation Water and Nitrate-nitrogen Loss Characterization in Southern Florida Nurseries: Cumulative Volumes, Runoff Rates, Nitrate-nitrogen Concentrations and Loadings, and Implications for Management

2010 ◽  
Vol 20 (2) ◽  
pp. 325-330 ◽  
Author(s):  
Chris Wilson ◽  
Joseph Albano ◽  
Miguel Mozdzen ◽  
Catherine Riiska
Keyword(s):  
Nitrate Nitrogen ◽  
Nitrogen Loss ◽  
Bedding Plant ◽  
Plant Nursery ◽  
The World ◽  
Nitrogen Concentrations ◽  
Foliage Plant ◽  
Southern Florida ◽  
Runoff Events ◽  
Chemical Loading

Enrichment of surface water with nitrate-nitrogen (NO3-N) is a significant problem throughout the world. In support of developing a method for removing NO3-N from water using denitrification, this project characterized runoff events at two nurseries in southern Florida to provide information needed for designing capacity. Specifically, estimates of runoff rates and volumes, NO3-N concentrations and loadings were profiled during intensively sampled fertigation events at a foliage plant nursery and a bedding plant nursery. Discharge volumes and rates varied with event, ranging from 2,487 to 20,935 L and 59.2 to 126 L·min−1, respectively, per event. NO3-N concentrations ranged from 0.7 to 386.4 mg·L−1, and event loadings ranged from 51 to 3024 g, indicating that significant losses may be realized. This project provided valuable hydraulic and chemical loading information needed for the development and design of bioremediation tools for the horticultural industry.

Modeling water flow and nitrate–nitrogen transport on golf course under turfgrass

2014 ◽  
Vol 15 (8) ◽  
pp. 1847-1859 ◽  
Author(s):  
Vilim Filipović ◽  
Gurpal S. Toor ◽  
Gabrijel Ondrašek ◽  
Radka Kodešová
Keyword(s):  
Water Flow ◽  
Nitrate Nitrogen ◽  
Golf Course ◽  
Nitrogen Transport

A Quantitative Study of Nitrogen Loss From Water of a Small, Spring-Fed Stream

1975 ◽  
Vol 10 (1) ◽  
pp. 110-117 ◽  
Author(s):  
N.K. Kaushik ◽  
J.B. Robinson ◽  
P. Sain ◽  
H.R. Whiteley ◽  
W. Stammers
Keyword(s):  
Aquatic Macrophytes ◽  
Nitrate Nitrogen ◽  
Nitrogen Loss ◽  
Stream Sediments ◽  
Nitrogen Transport ◽  
Riparian Plants ◽  
Nitrate N ◽  
Decomposition Of Organic Matter ◽  
Kjeldahl Nitrogen

Abstract With a view to determining nitrogen sink processes, if any, in streams and the factors that govern these processes, nitrogen transport was studied in a 2 km-long, perennial, spring-fed stream during the summer months of 1973 and 1974. Concentrations of ammonium, nitrite and Kjeldahl nitrogen were small but those of nitrate nitrogen were unusually high. However, as the water moved downstream it progressively lost nitrate N. This loss represented 59.4% and 46.7% of the respective inputs during 1973 and 1974. The decrease in the concentration of nitrate N could neither be attributed to dilution nor to nitrogen immobilization during decomposition of organic matter nor to the uptake by aquatic macrophytes. Laboratory experiment showed that the stream sediments have significant, capacity for denitrification of nitrate in water overlying them, even when the water is thoroughly oxygenated. Although the role of riparian plants in the uptake of nitrogen has not been fully elucidated, it seems that denitrification in the stream sediment may act as an important permanent nitrogen sink.

Effect of Aeration Rates on the Composting Process and Loss of Nitrogen during Composting

2017 ◽  
Vol 2 (1) ◽  
pp. 1
Author(s):  
Xiong Zhi-Qiang ◽  
Wang Guo-Xing ◽  
Huo Zhao-Chen ◽  
Yan Lei ◽  
Gao Ya-Mei ◽  
...  
Keyword(s):  
Seed Germination ◽  
Total Nitrogen ◽  
Biological Process ◽  
Nitrate Nitrogen ◽  
Nitrogen Loss ◽  
Germination Rate ◽  
Ammonium Nitrogen ◽  
Aeration Rate ◽  
Ammonia Emissions ◽  
Ventilation Method

Composting is a controlled biological process used to stabilize and transform waste into a soil treatment. Aeration rate is one factor that controls the process of composting, as it ensures the growth of adequate aerobic microbe populations. To investigate the effect of aeration rates on the physicochemical indexes of compost and the loss of nitrogen content during composting, aerobic composting processes with different aeration rates (A: 0.2 L min-1 kg-1 TS, B: 0.05 L min-1 kg-1 TS and C: 0 L min-1 kg-1 TS) were studied. Ammonium-nitrogen, nitrate nitrogen, total nitrogen and other factors in compost samples from different periods were measured. The results showed that aeration rate significantly affected O2 content under different conditions. The aeration rate also significantly affected water content, nitrate nitrogen, and nitrogen loss. NH3 emissions increased as aeration rates increased at high temperatures owing to nitrogen loss. These results showed that aeration rate had a significant effect on total nitrogen and ammonia emissions (p<0.05). Thus, optimization of the ventilation method could significantly increase seed germination rate. 

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