A DRAINMOD-Based Method to Estimate Effects of Drainage Water Management on Annual Nitrogen Loss to Surface Water

2012 ◽  
Vol 55 (3) ◽  
pp. 799-808 ◽  
Author(s):  
R. W. Skaggs ◽  
M. A. Youssef ◽  
G. M. Chescheir
Keyword(s):  
Water Management ◽  
Surface Water ◽  
Nitrogen Loss ◽  
Drainage Water ◽  
Drainage Water Management

Effect of Drainage Water Management on Nitrate Nitrogen Loss to Tile Drains in North Carolina

2018 ◽  
Vol 61 (1) ◽  
pp. 233-244 ◽  
Author(s):  
Chad A. Poole ◽  
R. Wayne Skaggs ◽  
Mohamed A. Youssef ◽  
George M. Chescheir ◽  
Carl R. Crozier
Keyword(s):  
Water Management ◽  
North Carolina ◽  
Nitrate Nitrogen ◽  
Sandy Loam ◽  
Nitrogen Loss ◽  
Drainage Water ◽  
Controlled Drainage ◽  
N Losses ◽  
Wide Range ◽  
Drainage Water Management

Abstract. Short-term studies have demonstrated that drainage water management (DWM), or controlled drainage (CD), can be used to substantially reduce the loss of nitrogen (N) from drained lands for a wide range of soils, crops, locations, and climates. Long-term studies on the effects of the practice are limited. This article presents results on the effects of CD on nitrate-N (NO3-N) losses for three crops, corn ( L.), wheat ( L.), and soybean ( [L.] Merr.), in a two-year rotation in North Carolina. Nitrate losses were measured on replicated plots under CD and conventional, or free drainage (FD), treatments for nine years between 1992 and 2012 on a tile-drained site near Plymouth, North Carolina. The site is on a Portsmouth sandy loam soil with parallel drains 22.9 m apart and 1.15 m deep. The subsurface drainage characteristics under FD were drainage intensity (DI) = 8 mm d-1, drainage coefficient (DC) = 14 mm d-1, and Kirkham coefficient (KC) = 18 mm d-1. Compared to FD, CD reduced annual drainage outflow by 33% and NO3-N export by 30%, with an average annual reduction of 6.3 kg ha-1 year-1. CD increased average NO3-N concentrations by 0.9 mg L-1, but the difference was not significant. The reduction in NO3-N export observed in the CD treatment was equal to the increase in N removed by the harvested grain. The results document the effects of CD on NO3-N export over a wide range of weather conditions during the nine-year study. While the average 30% reduction in NO3-N losses in drainage water is in the midrange of that reported by previous studies for different soils and climates, this is believed to be the first time such a reduction has been attributed to the effect of CD on increasing yields and N removed in the harvested grain. Keywords: Controlled drainage (CD), Corn, Drainage water, Drainage water management (DWM), Nitrate, Nitrogen, Soybean, Water quality, Wheat.

Impact of Drainage Water Management on Crop Yield

2013 ◽  
Author(s):  
Matt Helmers ◽  
Xiaobo Zhou ◽  
Carl Pederson ◽  
Greg Brenneman
Keyword(s):  
Water Management ◽  
Crop Yield ◽  
Drainage Water ◽  
Drainage Water Management

The Effects of Drainage Water Management on Crop Yields in Eastern North Carolina

2011 ◽  
Author(s):  
C A Poole ◽  
R W Skaggs ◽  
G M Cheschier ◽  
M A Youssef ◽  
C R Crozier
Keyword(s):  
Water Management ◽  
North Carolina ◽  
Crop Yields ◽  
Drainage Water ◽  
Drainage Water Management ◽  
Eastern North Carolina

Potential Watershed Nitrate Load Reduction with Drainage Water Management under Varied Implementation Options

2010 ◽  
Author(s):  
Srinivasulu Ale ◽  
Laura C Bowling ◽  
Mohamed A Youssef ◽  
Sylvie M Brouder ◽  
Jane R Frankenberger
Keyword(s):  
Water Management ◽  
Drainage Water ◽  
Load Reduction ◽  
Nitrate Load ◽  
Drainage Water Management
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