GPFARM modeling of corn yield and residual soil nitrate-N

2004 ◽  
Vol 43 (2) ◽  
pp. 87-107 ◽  
Author(s):  
M.J Shaffer ◽  
P.N.S Bartling ◽  
G.S McMaster
Keyword(s):  
Corn Yield ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Nitrate N

Influence of the time and rate of liquid-manure application on yield and nitrogen utilization of silage corn in south coastal British Columbia

1996 ◽  
Vol 76 (2) ◽  
pp. 153-164 ◽  
Author(s):  
B. J. Zebarth ◽  
J. W. Paul ◽  
O. Schmidt ◽  
R. McDougall
Keyword(s):  
British Columbia ◽  
Dairy Manure ◽  
Inorganic Fertilizer ◽  
N Recovery ◽  
Corn Yield ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Liquid Manure ◽  
Manure Application ◽  
Coastal British Columbia

Manure-N availability must be known in order to design application practices that maximize the nutrient value of the manure while minimizing adverse environmental impacts. This study determined the effect of time and rate of liquid manure application on silage corn yield and N utilization, and residual soil nitrate at harvest, in south coastal British Columbia. Liquid dairy or liquid hog manure was applied at target rates of 0, 175, 350 or 525 kg N ha−1, with or without addition of 100 kg N ha−1 as inorganic fertilizer, at two sites in each of 2 yr. Time of liquid-dairy-manure application was also tested at two sites in each of 2 yr with N-application treatments of: 600 kg N ha−1 as manure applied in spring; 600 kg N ha−1 as manure applied in fall; 300 kg N ha−1 as manure applied in each of spring and fall; 200 kg N ha−1 applied as inorganic fertilizer in spring; 300 kg N ha−1 as manure plus 100 kg N ha−1 as inorganic fertilizer applied in spring; and a control that received no applied N. Fall-applied manure did not increase corn yield or N uptake in the following growing season. At all sites, maximum yield was attained using manure only. Selection of proper spring application rates for manure and inorganic fertilizer were found to be equally important in minimizing residual soil nitrate at harvest. Apparent recovery of applied N in the crop ranged from 0 to 33% for manure and from 18 to 93% for inorganic fertilizer. Key words: N recovery, manure management

Guiding cover crop establishment to scavenge residual soil nitrate nitrogen using site-specific approaches

2017 ◽  
Vol 8 (2) ◽  
pp. 293-298 ◽  
Author(s):  
J. H. Grove ◽  
E. M. Pena-Yewtukhiw
Keyword(s):  
Cover Crops ◽  
N Recovery ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Winter Cereal ◽  
Site Specific ◽  
Nitrate N ◽  
N Concentration ◽  
N Removal ◽  
Yield Map

There is evidence that well managed winter cereal cover crops can scavenge a goodly amount of post summer cereal harvest residual nitrogen (N), reducing nitrate-N losses to leaching or runoff. The objective of this study was to compare nitrate-N phytoremediation areas derived from five sources of information: site specific, non-site specific, or a combination. The non-site specific source was a single “composite” soil nitrate sample. The site specific sources were: a) a dense soil nitrate-N grid sampling; and b) a N removal map calculated from yield and grain N concentration, both determined at the same grid density as soil nitrate-N. The source combinations were: a) a yield map and a single grain N concentration value taken from published information; and b) a yield map and a single field “composite” grain N concentration value. The results indicated that the published grain N value was inferior to measured grain N values, and that the maize (Zea mays L.) yield map best serves as a stratification tool, delineating similar crop performance areas. Random soil sampling within those areas further optimizes residual nitrate-N recovery management. Site specific technologies can guide establishment of N scavenging cover crops to simultaneously improve resource use efficiency and water quality.

On-Farm Evaluation of Winter Wheat Yield Response to Residual Soil Nitrate-N in North China Plain

2008 ◽  
Vol 100 (6) ◽  
pp. 1527-1534 ◽  
Author(s):  
Zhenling Cui ◽  
Xinping Chen ◽  
Yuxin Miao ◽  
Fei Li ◽  
Fusuo Zhang ◽  
...  
Keyword(s):  
Winter Wheat ◽  
North China Plain ◽  
North China ◽  
Wheat Yield ◽  
Yield Response ◽  
Residual Soil ◽  
Soil Nitrate ◽  
Nitrate N ◽  
Winter Wheat Yield ◽  
On Farm

Sidedressed Dairy Manure Effects on Corn Yield and Residual Soil Nitrate

Soil Science ◽  
2014 ◽  
Vol 179 (1) ◽  
pp. 37-41 ◽  
Author(s):  
William E. Jokela ◽  
Sidney C. Bosworth ◽  
John J. Rankin
Keyword(s):  
Dairy Manure ◽  
Corn Yield ◽  
Residual Soil ◽  
Soil Nitrate

scholarly journals Assessment of a Large Subsurface Controlled Drainage and Irrigation System: III. Water chemistry of the tile effluent and its potential impact on surface water resources

2010 ◽  
Vol 44-45 (2010-2011) ◽  
pp. 11-17
Author(s):  
Michael Aide ◽  
Indi Braden ◽  
Neil Hermann ◽  
David Mauk ◽  
Wesley Mueller ◽  
...  
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Irrigation System ◽  
Subsurface Drainage ◽  
Soil Conditions ◽  
Soil Nitrate ◽  
Controlled Drainage ◽  
Surface Water Resources ◽  
Nitrate N ◽  
Nitrate Concentrations

Abstract Controlled subsurface drainage irrigation systems promote crop productivity; however, these land management systems also allow an efficient pathway for the transport of elements from soils to surface water resources. The nitrate and macro-element effluent concentrations from tile-drainage involving a 40 ha controlled subsurface drainage irrigation system are described and compared to soil nitrate availability. Soil nitrate concentrations generally show an increase immediately after soil nitrogen fertilization practices and are sufficiently abundant to promote their transport from the soil resource to the tile-drain effluent waters. The data indicates that: (1) the transport of nitrate-N in tile-drain effluent waters is appreciable; (2) denitrification pathways effectively reduce a portion of the soil nitrate-N when the controlled drainage system establishes winter-early spring anoxic soil conditions, and (3) the best strategy for reducing nitrate-N concentrations in tile-drain effluent waters is adjusting N fertilization rates and the timing of their application. The development of bioreactors for simulating wetland conditions may further limit nitrate concentrations in surface waters because of soil drainage.

Preplant Manure on Alfalfa: Residual Effects on Corn Yield and Soil Nitrate

jpa ◽  
1996 ◽  
Vol 9 (3) ◽  
pp. 395-398 ◽  
Author(s):  
M. A. Schmitt ◽  
C. C. Sheaffer ◽  
G. W. Randall
Keyword(s):  
Residual Effects ◽  
Corn Yield ◽  
Soil Nitrate
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