scholarly journals Relationship of in‐season soil nitrogen concentration with corn yield and potential nitrogen losses

2020 ◽  
Vol 84 (4) ◽  
pp. 1296-1306
Author(s):  
Giovani Preza‐Fontes ◽  
Emerson D. Nafziger ◽  
Laura E. Christianson ◽  
Cameron M. Pittelkow
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Concentration ◽  
Nitrogen Losses ◽  
Corn Yield ◽  
Relationship Of

Distribution and relationship of soil nitrogen and flue-cured tobacco nicotine content in Enshi tobacco fields

2009 ◽  
Vol 17 (5) ◽  
pp. 880-884
Author(s):  
Zi-Cheng XU ◽  
Yan GUO ◽  
Hui-Fang SHAO ◽  
Qing-Wen BI ◽  
Jian WANG ◽  
...  
Keyword(s):  
Soil Nitrogen ◽  
Nicotine Content ◽  
Relationship Of

Nitrogen cycling in a Venezuelan tropical seasonally flooded forest: soil nitrogen mineralization and nitrification

1994 ◽  
Vol 10 (3) ◽  
pp. 399-416 ◽  
Author(s):  
Barrios E. ◽  
Herrera R.
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Availability ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Ammonium Nitrogen ◽  
Wet Season ◽  
Flooded Forest ◽  
Nitrogen Concentrations ◽  
Minimum Stress ◽  
Seasonally Flooded

ABSTRACTSeasonally flooded forests represent a transition between terrestrial and aquatic ecosystems. The Mapire river, a tributary of the Orinoco river, floods its surrounding forests during the wet season (May–December). The soils are very acid and the total nitrogen concentration (0.1%) is only half that found in nearby soils flooded by Orinoco waters. Ammonium-nitrogen predominates in the soil during the flooded period while nitrate-nitrogen concentrations are higher in the dry period. Wide fluctuations in the inorganic nitrogen fractions did not considerably affect the annual course of soil nitrogen.The predominance of mineralization versus nitrification (56 and 5 μgsoil month−1respectively) and possibly the synchronization of nitrogen availability with plant demand could be considered as nitrogen conserving mechanisms.In synchrony with the hydrologic cycle, the seasonally flooded forest studied shows a nitrogencycle where inputs and accumulation are maximized when the system is under minimum stress (dry season). During flooding, the system enters a period of dormancy making minimal use of nutrient and energy to avoid or tolerate anaerobiosis.

Time-response relationship of ractopamine feeding on growth performance, plasma urea nitrogen concentration, and carcass traits of finishing pigs1

2013 ◽  
Vol 91 (2) ◽  
pp. 811-818 ◽  
Author(s):  
V. V. Almeida ◽  
A. J. C. Nuñez ◽  
A. P. Schinckel ◽  
C. Andrade ◽  
J. C. C. Balieiro ◽  
...  
Keyword(s):  
Growth Performance ◽  
Nitrogen Concentration ◽  
Carcass Traits ◽  
Time Response ◽  
Response Relationship ◽  
Urea Nitrogen ◽  
Plasma Urea ◽  
Relationship Of

RELATIONSHIP OF YIELD AND TOTAL NITROGEN UPTAKE OF BRUSSELS SPROUTS PLANTS GROWN IN THE GREENHOUSE TO AVAILABLE SOIL NITROGEN

1969 ◽  
Vol 49 (3) ◽  
pp. 313-318 ◽  
Author(s):  
D. C. Munro
Keyword(s):  
Total Nitrogen ◽  
Soil Nitrogen ◽  
Nitrogen Uptake ◽  
Nitrate Nitrogen ◽  
Soil Samples ◽  
Moist Soil ◽  
Available Nitrogen ◽  
Air Drying ◽  
Brussels Sprouts ◽  
Relationship Of

Initial nitrate-nitrogen content of the soil gave a correlation coefficient (r) of 0.93 with yields and with total nitrogen uptake of Brussels sprouts plants (Brassica oleracea var. gemmifera DC., Jade Cross). Soil nitrogen extracted with 0.01 M NaHCO3 gave r values of 0.76 with yields and 0.75 with nitrogen uptake. Nitrate incubation results from leached, moist soil samples gave r values of 0.59 with yields and 0.56 with nitrogen uptake. However, air-drying of soil samples prior to leaching and incubation resulted in r values of only 0.15 and 0.11 with yields and nitrogen uptake, respectively. Available nitrogen determined by incubation without previous leaching of the soil samples gave high r values because of the influence of the initial nitrate nitrogen in the soil.

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

Modifying fertilizer rate and application method reduces environmental nitrogen losses and increases corn yield in Ontario

2020 ◽  
Vol 722 ◽  
pp. 137851 ◽  
Author(s):  
Kamaljit Banger ◽  
Claudia Wagner-Riddle ◽  
Brian B. Grant ◽  
Ward N. Smith ◽  
Craig Drury ◽  
...  
Keyword(s):  
Nitrogen Losses ◽  
Corn Yield ◽  
Fertilizer Rate ◽  
Application Method

Corn yield and soil nitrogen following winter annual cover crops interseeded into soybean

Crop Science ◽  
2020 ◽  
Vol 60 (5) ◽  
pp. 2667-2682
Author(s):  
Robert Norris ◽  
Bee Khim Chim ◽  
Gregory Evanylo ◽  
Mark Reiter ◽  
Wade Thomason
Keyword(s):  
Soil Nitrogen ◽  
Cover Crops ◽  
Corn Yield ◽  
Winter Annual

Response of the Illinois Soil Nitrogen Test to liquid and composted dairy manure applications in a corn agroecosystem

2006 ◽  
Vol 86 (4) ◽  
pp. 655-663 ◽  
Author(s):  
J H Klapwyk ◽  
Q M Ketterings ◽  
G S Godwin ◽  
D. Wang
Keyword(s):  
New York ◽  
Soil Nitrogen ◽  
Nutrient Management ◽  
Amino Sugar ◽  
Dairy Manure ◽  
Corn Yield ◽  
Potentially Mineralizable N ◽  
Manure Amendments ◽  
N Management ◽  
Over Time

Dairy manure is important for corn (Zea mays L.) production in New York. Optimizing corn yield while minimizing environmental loss with manure nutrients is often a challenge. A potential tool for improving N management is the Illinois Soil Nitrogen Test (ISNT), which estimates amino sugar N, a pool of potentially mineralizable N for corn uptake. The objectives of this study were to determine (1) the short-term effects of manure applications on ISNT-N, and (2) the longer-term impacts of annual additions of composted and liquid dairy manure on ISNT-N. A 6-wk incubation study showed that NH4-N from manure temporarily (< 2 wk) increased ISNT results. A 4-yr field study was conducted with annual spring applications of two rates of composted dairy manure (45 and 77 Mg ha-1) and two liquid dairy manure rates (63.5 and 180 kL ha-1). Results showed that ISNT-N slightly decreased over time in check plots (no manure or fertilizer additions) and that increases in ISNT-N over time in compost and liquid manure amended plots were consistent with changes in N credits currently given to manures in New York. Our results suggest that the ISNT accounts for N in previously applied compost and manure amendments, but that samples should not be taken within 2-wk following manure addition. Key words: Amino sugar, compost, Illinois Soil Nitrogen Test, nitrogen, manure, nutrient management

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