Nitrogen use in spring wheat impacted by crop diversification, management, and tillage

2021 ◽  
Author(s):  
Brett Allen ◽  
Andrew William Lenssen ◽  
Upendra M. Sainju ◽  
Jalal D. Jabro ◽  
William Stevens
Keyword(s):  
Spring Wheat ◽  
Crop Diversification ◽  
Nitrogen Use ◽  
Diversification Management

scholarly journals Crop Diversification, Tillage, and Management System Influence Spring Wheat Yield and Water Use

2014 ◽  
Vol 106 (4) ◽  
pp. 1445-1454 ◽  
Author(s):  
A. W. Lenssen ◽  
U. M. Sainju ◽  
J. D. Jabro ◽  
W. M. Iversen ◽  
B. L. Allen ◽  
...  
Keyword(s):  
Water Use ◽  
Spring Wheat ◽  
Management System ◽  
Wheat Yield ◽  
Crop Diversification

Response of spring wheat to boron-coated urea and its effect on nitrogen use efficiency

2017 ◽  
Vol 40 (13) ◽  
pp. 1920-1927 ◽  
Author(s):  
Yashbir Singh Shivay ◽  
Rajendra Prasad ◽  
Vijay Pooniya ◽  
Madan Pal ◽  
Radhika Bansal
Keyword(s):  
Spring Wheat ◽  
Nitrogen Use Efficiency ◽  
Nitrogen Use ◽  
Coated Urea ◽  
Use Efficiency

Influence of tillage systems and nitrogen management on grain yield, grain protein and nitrogen-use efficiency in UK spring wheat

2016 ◽  
Vol 154 (8) ◽  
pp. 1437-1452 ◽  
Author(s):  
K. RIAL-LOVERA ◽  
W. P. DAVIES ◽  
N. D. CANNON ◽  
J. S. CONWAY
Keyword(s):  
Soil Moisture ◽  
Grain Yield ◽  
Spring Wheat ◽  
Wheat Yield ◽  
N Fertilization ◽  
N Fertilizer ◽  
Grain Protein ◽  
Tillage Systems ◽  
Nitrogen Use ◽  
Use Efficiency

SUMMARYEffects of soil tillage systems and nitrogen (N) fertilizer management on spring wheat yield components, grain yield and N-use efficiency (NUE) were evaluated in contrasting weather of 2013 and 2014 on a clay soil at the Royal Agricultural University's Harnhill Manor Farm, Cirencester, UK. Three tillage systems – conventional plough tillage (CT), high intensity non-inversion tillage (HINiT) and low intensity non-inversion tillage (LINiT) for seedbed preparation – were compared at four rates of N fertilizer (0, 70, 140 and 210 kg N/ha). Responses to the effects of the management practices were strongly influenced by weather conditions and varied across seasons. Grain yields were similar between LINiT and CT in 2013, while CT produced higher yields in 2014. Nitrogen fertilization effects also varied across the years with no significant effects observed on grain yield in 2013, while in 2014 applications up to 140 kg N/ha increased yield. Grain protein ranged from 10·1 to 14·5% and increased with N rate in both years. Nitrogen-use efficiency ranged from 12·6 to 49·1 kg grain per kg N fertilizer and decreased as N fertilization rate increased in both years. There was no tillage effect on NUE in 2013, while in 2014 NUE under CT was similar to LINiT and higher than HINiT. The effect of tillage and N fertilization on soil moisture and soil mineral N (SMN) fluctuated across years. In 2013, LINiT showed significantly higher soil moisture than CT, while soil moisture did not differ between tillage systems in 2014. Conventional tillage had significantly higher SMN at harvest time in 2014, while no significant differences on SMN were observed between tillage systems in 2013. These results indicate that LINiT can be used to produce similar spring wheat yield to CT on this particular soil type, if a dry cropping season is expected. Crop response to N fertilization is limited when soil residual N is higher, while in conditions of lower residual SMN, a higher N supply is needed to increase yield and improve grain protein content.

GROWING SUNFLOWERS IN SOUTHWESTERN SASKATCHEWAN

1982 ◽  
Vol 62 (2) ◽  
pp. 311-316
Author(s):  
D. W. L. READ ◽  
C. H. ANDERSON ◽  
C. A. CAMPBELL
Keyword(s):  
Spring Wheat ◽  
Deleterious Effect ◽  
Wind Erosion ◽  
Wheat Crop ◽  
Row Spacing ◽  
Nitrogen Use ◽  
Hard Red Spring Wheat ◽  
Alternative Crop ◽  
P Fertilizer ◽  
Summer Fallow

Sunflower is a possible alternative crop to hard red spring wheat in semiarid southwestern Saskatchewan. To date, little research has been done on sunflowers in this region. A study was carried out to determine the proper row spacing at which this crop should be grown. At the same time, it was necessary to determine whether sunflowers would leave sufficient residues to protect the soil from wind erosion while encouraging overwinter snow conservation. Sunflowers were grown on summer fallow at 18-, 36- and 53-cm row spacing, with and without added P fertilizer, over a 5-yr period. Hard red spring wheat was grown for comparison. A row spacing of 36 cm produced greater sunflower yields than did row spacings of 18 or 53 cm. Fertilizer increased the yield of 18-cm spacing slightly only in wet years. Yield of wheat was 1.9–3.5 times as great as that of sunflowers. Sunflowers had no deleterious effect on the yield of a subsequent wheat crop. There was no difference between sunflowers and wheat regarding their effect on soil erosiveness or water and nitrogen use.

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.

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