scholarly journals Root zone soil nitrogen management to maintain high tomato yields and minimum nitrogen losses to the environment

2010 ◽  
Vol 125 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Tao Ren ◽  
Peter Christie ◽  
Jingguo Wang ◽  
Qing Chen ◽  
Fusuo Zhang
Keyword(s):  
Soil Nitrogen ◽  
Root Zone ◽  
Nitrogen Management ◽  
Nitrogen Losses

Integrating canopy sensing and soil nitrogen for improved corn nitrogen management

2020 ◽  
Author(s):  
Gabriel Dias Paiao ◽  
Fabián G. Fernández ◽  
Jared A. Spackman ◽  
Daniel E. Kaiser ◽  
Sanford Weisberg
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Management

scholarly journals Soil‐nitrogen, potentially mineralizable‐nitrogen, and field condition information marginally improves corn nitrogen management

2020 ◽  
Vol 112 (5) ◽  
pp. 4332-4343
Author(s):  
Jason D. Clark ◽  
Fabián G. Fernández ◽  
Kristen S. Veum ◽  
James J. Camberato ◽  
Paul R. Carter ◽  
...  
Keyword(s):  
Soil Nitrogen ◽  
Field Condition ◽  
Nitrogen Management ◽  
Potentially Mineralizable Nitrogen ◽  
Mineralizable Nitrogen

scholarly journals Assessing Effects of Agronomic Nitrogen Management on Crop Nitrogen Use and Nitrogen Losses in the Western Canadian Prairies

2020 ◽  
Vol 4 ◽  
Author(s):  
Symon Mezbahuddin ◽  
David Spiess ◽  
David Hildebrand ◽  
Len Kryzanowski ◽  
Daniel Itenfisu ◽  
...  
Keyword(s):  
Nitrogen Management ◽  
Nitrogen Losses ◽  
Nitrogen Use ◽  
Canadian Prairies

Improved modelling of soil nitrogen losses

2015 ◽  
Vol 5 (8) ◽  
pp. 705-706 ◽  
Author(s):  
Qing Zhu ◽  
William J. Riley
Keyword(s):  
Soil Nitrogen ◽  
Nitrogen Losses

Review: Reducing residual soil nitrogen losses from agroecosystems for surface water protection in Quebec and Ontario, Canada: Best management practices, policies and perspectives

2014 ◽  
Vol 94 (2) ◽  
pp. 109-127 ◽  
Author(s):  
Sogol Rasouli ◽  
Joann K. Whalen ◽  
Chandra A. Madramootoo
Keyword(s):  
Surface Water ◽  
Soil Nitrogen ◽  
Best Management Practices ◽  
Management Practices ◽  
Nitrogen Losses ◽  
Agricultural Fields ◽  
Residual Soil ◽  
Water Protection ◽  
N Losses ◽  
Best Management

Rasouli, S., Whalen, J. K. and Madramootoo, C. A. 2014. Review: Reducing residual soil nitrogen losses from agroecosystems for surface water protection in Quebec and Ontario, Canada: Best management practices, policies and perspectives. Can. J. Soil Sci. 94: 109–127. Eutrophication and cyanobacteria blooms, a growing problem in many of Quebec and Ontario's lakes and rivers, are largely attributed to the phosphorus (P) and nitrogen (N) emanating from intensively cropped agricultural fields. In fact, 49% of N loading in surface waters comes from runoff and leaching from fertilized soils and livestock operations. The residual soil nitrogen (RSN), which remains in soil at the end of the growing season, contains soluble and particulate forms of N that are prone to being transported from agricultural fields to waterways. Policies and best management practices (BMPs) to regulate manure storage and restrict fertilizer and manure spreading can help in reducing N losses from agroecosystems. However, reduction of RSN also requires an understanding of the complex interactions between climate, soil type, topography, hydrology and cropping systems. Reducing N losses from agroecosystems can be achieved through careful accounting for all N inputs (e.g., N credits for legumes and manure inputs) in nutrient management plans, including those applied in previous years, as well as the strategic implementation of multiple BMPs and calibrated soil N testing for crops with high N requirements. We conclude that increasing farmer awareness and motivation to implement BMPs will be important in reducing RSN. Programs to promote communication between farmers and researchers, crop advisors and provincial ministries of agriculture and the environment are recommended.

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