Nitrogen management for zero‐till spring wheat: Disposition in plant and utilization efficiency

1993 ◽  
Vol 24 (17-18) ◽  
pp. 2223-2239 ◽  
Author(s):  
C. A. Campbell ◽  
F. Selles ◽  
R. P. Zentner ◽  
B. G. McConkey
Keyword(s):  
Spring Wheat ◽  
Nitrogen Management ◽  
Utilization Efficiency

Tiller Contribution to Spring Wheat Yield under Varying Seeding and Nitrogen Management

2008 ◽  
Vol 100 (2) ◽  
pp. 406 ◽  
Author(s):  
B. N. Otteson ◽  
M. Mergoum ◽  
J. K. Ransom ◽  
B. Schatz
Keyword(s):  
Spring Wheat ◽  
Wheat Yield ◽  
Nitrogen Management

scholarly journals Weed development in spring wheat after contrasting soil tillage and nitrogen management

2016 ◽  
Vol 169 (2) ◽  
pp. 236-247 ◽  
Author(s):  
K. Rial-Lovera ◽  
W.P. Davies ◽  
N.D. Cannon ◽  
J.S. Conway
Keyword(s):  
Spring Wheat ◽  
Nitrogen Management ◽  
Soil Tillage

Nitrogen Management Strategies to Improve Yield and Dough Properties in Hard Red Spring Wheat

2018 ◽  
Vol 110 (6) ◽  
pp. 2417-2429 ◽  
Author(s):  
Geomar M. Corassa ◽  
Fernando D. Hansel ◽  
Romulo Lollato ◽  
João L. F. Pires ◽  
Rai Schwalbert ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Management Strategies ◽  
Nitrogen Management ◽  
Hard Red Spring Wheat ◽  
Dough Properties

PAPER PRESENTED AT INTERNATIONAL WORKSHOP ON INCREASING WHEAT YIELD POTENTIAL, CIMMYT, OBREGON, MEXICO, 20–24 MARCH 2006 Reduced nitrogen and improved farm income for irrigated spring wheat in the Yaqui Valley, Mexico, using sensor based nitrogen management

2007 ◽  
Vol 145 (3) ◽  
pp. 215-222 ◽  
Author(s):  
J. I. ORTIZ-MONASTERIO ◽  
W. RAUN
Keyword(s):  
Technology Transfer ◽  
Spring Wheat ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Management ◽  
Farm Income ◽  
Wheat Crop ◽  
Nitrogen Use ◽  
Yaqui Valley ◽  
Crop Cycle ◽  
Use Efficiency

Wheat nitrogen-use efficiency in the Yaqui Valley has been estimated at about 0·31. The nitrogen that is not recovered by the crop has important environmental costs that have regional and global consequences. In addition, these nitrogen losses represent an important reduction in farm income. The objective of the present work was to validate a technology that includes the use of N-rich strips together with the GreenSeeker™ sensor and a crop algorithm in farmers' fields with the ultimate goal of improving nitrogen-use efficiency through site-specific nitrogen management in irrigated spring wheat. During the wheat crop cycle 2002/03 and 2003/04, 13 validation experiments of c. 1 ha each were established in farmers' fields in the Yaqui Valley. After the validation phase, during the wheat crop cycle 2005/06, eight technology transfer trials were established in farmers' fields; these had on an average an area of 10 ha each. Both the validation and technology transfer trials compared the farmers' conventional nitrogen management use v. the use of the N-rich strip together with the Green Seeker™ sensor and a crop algorithm to derive N recommendations for each individual field. The results of the validation trials showed that on an average over all locations, farmers were able to save 69 kg N/ha, without any yield reduction. At the price of US$0.9 per unit of N in the valley when these experiments were established, this represented savings to the farmers of US$62/ha. The technology transfer trials demonstrated that, in large commercial areas with an average size of 10 ha, farmers could improve their farm income by US$50/ha, when using sensor based N management. The combination of the N-rich strip, together with the use of the sensor and a crop algorithm to interpret the results from the sensor, allowed farmers to obtain significant savings in N use and thus in farm profits. Farm income was increased by US$56/ha, when averaged over all trials in all years.

Influence of Seeding Rate, Nitrogen Management, and Micronutrient Blend Applications on Pith Expression in Solid-Stemmed Spring Wheat

Crop Science ◽  
2012 ◽  
Vol 52 (3) ◽  
pp. 1316-1329 ◽  
Author(s):  
Brian L. Beres ◽  
Ross H. McKenzie ◽  
Héctor A. Cárcamo ◽  
Lloyd M. Dosdall ◽  
Maya L. Evenden ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Nitrogen Management ◽  
Seeding Rate

Nitrogen use efficiency in spring wheat: genotypic variation and grain yield response under sandy soil conditions

2017 ◽  
Vol 155 (9) ◽  
pp. 1407-1423 ◽  
Author(s):  
E. MANSOUR ◽  
A. M. A. MERWAD ◽  
M. A. T. YASIN ◽  
M. I. E. ABDUL-HAMID ◽  
E. E. A. EL-SOBKY ◽  
...  
Keyword(s):  
Grain Yield ◽  
Sandy Soil ◽  
Spring Wheat ◽  
Nitrogen Use Efficiency ◽  
Genotypic Variation ◽  
Utilization Efficiency ◽  
Soil Conditions ◽  
Nitrogen Use ◽  
N Concentration ◽  
Use Efficiency

SUMMARYAgricultural practices are likely to lower nitrogen (N) fertilization inputs for economic and ecological limitation reasons. The objective of the current study was to assess genotypic variation in nitrogen use efficiency (NUE) and related parameters of spring wheat (Triticum aestivumL.) as well as the relative grain yield performance under sandy soil conditions. A sub-set of 16 spring wheat genotypes was studied over 2 years at five N levels (0, 70, 140, 210 and 280 kg N/ha). Results indicated significant differences among genotypes and N levels for grain yield and yield components as well as NUE. Genotypes with high NUE exhibited higher plant biomass, grain and straw N concentration and grain yield than those with medium and low NUE. Utilization efficiency (grain-NUtE) was more important than uptake efficiency (total NUpE) in association with grain yield. Nitrogen supply was found to have a substantial effect on genotype; Line 6052 as well as Shandawel 1, Gemmiza 10, Gemmiza 12, Line 6078 and Line 6083 showed higher net assimilation rate, more productive tillers, increased number of spikes per unit area and grains per spike, extensive N concentration in grain and straw, heavier grains, higher biological yield and consequently maximized grain yield. The relative importance of NUE-associated parameters such as nitrogen agronomic efficiency, nitrogen physiological efficiency and apparent nitrogen recovery as potential targets in breeding programmes for increased NUE genotypes is also mentioned.

Influence of Genotype, Environment, and Nitrogen Management on Spring Wheat Quality

Crop Science ◽  
2004 ◽  
Vol 44 (2) ◽  
pp. 425 ◽  
Author(s):  
E. J. Souza ◽  
J. M. Martin ◽  
M. J. Guttieri ◽  
K. M. O'Brien ◽  
D. K. Habernicht ◽  
...  
Keyword(s):  
Spring Wheat ◽  
Nitrogen Management ◽  
Wheat Quality
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