PREDICTING SOIL NITRATE–NITROGEN LOSSES FROM INCORPORATED POULTRY MANURE USING THE GLEAMS MODEL

2001 ◽  
Vol 44 (6) ◽  
Author(s):  
A. J. Chinkuyu ◽  
R. S. Kanwar
Keyword(s):  
Nitrate Nitrogen ◽  
Poultry Manure ◽  
Nitrogen Losses ◽  
Soil Nitrate ◽  
Gleams Model

Fallow management, soil water, plant-available soil nitrogen and grain sorghum production in south west Queensland

1992 ◽  
Vol 32 (4) ◽  
pp. 473 ◽  
Author(s):  
G Gibson ◽  
BJ Radford ◽  
RGH Nielsen
Keyword(s):  
Soil Water ◽  
Nitrate Nitrogen ◽  
Soil Nitrate ◽  
Zero Tillage ◽  
Fallow Management ◽  
South West ◽  
Primary Tillage ◽  
Grain Nitrogen ◽  
Texture Contrast ◽  
Gypsum Application

The effects of tillage frequency (conventional, reduced and zero), primary tillage implement (disc, blade and chisel plough), stubble management (retention and removal), gypsum application, and paraplowing were examined with respect to soil water storage, soil nitrate accumulation, crop establishment, crop growth, grain yield and grain nitrogen content for 4 successive sorghum crops on a sodic, texture-contrast soil in south west Queensland. Retention of sorghum stubble (v. removal) produced an increase in mean yield of sorghum grain of 393 kg/ha, due to increased soil water extraction and increased water use efficiency by the following crop. The highest mean yield occurred after reduced blade tillage with stubble retained. Zero tillage with stubble removed gave the lowest mean grain yield. Zero tillage always had the lowest quantity of soil nitrate-nitrogen at sowing. In one fallow, increased aggressiveness of primary tillage (disc v. blade plough) increased the quantity of nitrate-nitrogen in the top 60 cm of soil at sowing. These effects on available soil nitrogen did not result in corresponding differences in grain nitrogen content. Results indicate that for optimum fallow management on this texture-contrast soil in south west Queensland, sorghum residues should be retained, tillage frequency should be reduced, but not to zero, blade ploughing should be preferred to discing, and gypsum application should not be practised.

Predicting Subsurface Drainage, Corn Yield, and Nitrate Nitrogen Losses with DRAINMOD‐N

2000 ◽  
Vol 29 (3) ◽  
pp. 817-825 ◽  
Author(s):  
S. L. Zhao ◽  
S. C. Gupta ◽  
D. R. Huggins ◽  
J. F. Moncrief
Keyword(s):  
Nitrate Nitrogen ◽  
Subsurface Drainage ◽  
Nitrogen Losses ◽  
Corn Yield

Nodulating and Non-Nodulating Soybean Rotation Influence on Soil Nitrate-Nitrogen and Water, and Sorghum Yield

2007 ◽  
Vol 99 (3) ◽  
pp. 599-606 ◽  
Author(s):  
Nanga Mady Kaye ◽  
Stephen C. Mason ◽  
Tomie D. Galusha ◽  
Martha Mamo
Keyword(s):  
Nitrate Nitrogen ◽  
Soil Nitrate

Modeling Nitrate-Nitrogen Losses in Response to Tile Drain Depth and Spacing in a Cold Climate

2005 ◽  
Author(s):  
Vinay Nangia ◽  
Prasanna H. Gowda ◽  
David J. Mulla ◽  
Gary R. Sands
Keyword(s):  
Nitrate Nitrogen ◽  
Cold Climate ◽  
Nitrogen Losses

The Effect of Human Activity on the Distribution of Soil Nitrate Nitrogen in Unsaturated Zone

2013 ◽  
Vol 790 ◽  
pp. 202-205
Author(s):  
Hui Yan Gao ◽  
Lu Hua Yang ◽  
Tian Li ◽  
Zi Peng Guo
Keyword(s):  
Soil Moisture ◽  
Nitrogen Content ◽  
Human Activity ◽  
Soil Profile ◽  
Nitrate Nitrogen ◽  
Root Zone ◽  
Deep Layer ◽  
Soil Layer ◽  
Growth Period ◽  
Soil Nitrate

Soil moisture and nitrate nitrogen were measured respectively in planting area and non-planting area in RANZHUANG experiment station from 2011 to 2012. The effect of human activity on soil moisture and nitrate nitrogen was analyzed. The results show that soil moisture content varies from 8.61% to 30.09% within 0~250cm depth and is tended to be stable below 250cm deep layer in non-planting area. The distribution of soil nitrate nitrogen is a single peak curve, the peak moves downward at a speed of 0.81cm/d in percolation of rainfall. Soil moisture varies form 21.23% to 41.67% within 0~400cm depth and is tended to be stable below 400cm deep layer in planting area. Nitrate nitrogen is mainly accumulated at 0~100cm deep soil layer in the wheat growth period. In the maize growth period, the distribution of nitrate nitrogen is double peak curve in 0~500cm soil profile. The upper peak occurs at 40~100cm soil layer, the peak of nitrate nitrogen content is between 26.7~54.6mg/kg; the lower emerges at 150~260cm soil profile, the value is between 36.7~106.36mg/kg. Deep percolation of the nitrate nitrogen is obvious due to unreasonable irrigation and fertilization. The nitrate nitrogen content accounts for 52.3% of the total nitrate nitrogen below the root zone soil, which is a potential contamination source of groundwater.

scholarly journals Variations Regularity of Soil Nitrate Nitrogen in Hebei Piedmont Plain

2015 ◽  
Vol 9 (1) ◽  
pp. 98-102
Author(s):  
Huiyan Gao ◽  
Luhua Yang
Keyword(s):  
Soil Profile ◽  
Nitrate Nitrogen ◽  
Rotation Period ◽  
Growth Period ◽  
Utilization Efficiency ◽  
Nitrate Content ◽  
Soil Nitrate ◽  
Deep Soil ◽  
Piedmont Plain ◽  
Groundwater Environment

Field experiment was carried out to study on the spatial and temporal distribution of soil nitrate nitrogen at Ranzhuang water resources experiment station in Hebei piedmont plain from 2011 to 2012. The results show that nitrate nitrogen content varies in sinusoidal curve at shallow tilth soil and shows in “W” shape at deep soil profile during the wheat-maize rotation period. Nitrate nitrogen is mainly accumulated in 0~100cm soil and the maximum value occur at reviving stage in the wheat growth period. In the maize growth period, the distribution of nitrate nitrogen is double peak curve in 0∼500cm soil profile. The maximum peak emerges at 150∼260cm, the peak of soil nitrate content is between 36.7∼106.36mg/kg. In 0∼500cm soil layers, the cumulative amount of nitrate nitrogen is 1430.56∼5126.05 kg/hm2. The amount of nitrate nitrogen leaching is 1294.13kg/hm, which is 52.29% of the total amount of annual fertilization. It is scientific and technical groundwork to improve the utilization efficiency of nitrogen fertilizer and protect groundwater environment.

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