Economic and environmental nitrate leaching consequences of 4R nitrogen management practices including use of inhibitors for corn production in Ontario

The primary mode of nitrogen (N) loss from tile-drained row-cropped land is generally nitrate-nitrogen (NO3-N) leaching. Although cropping, tillage, and N management practices can be altered to reduce the amount of leaching, there are limits as to how much can be done. Data are given to illustrate the potential reductions for individual practices such as rate, method, and timing of N applications. However, most effects are multiplicative and not additive; thus it is probably not realistic to hope to get overall reductions greater than 25 to 30% with in-field practices alone. If this level of reduction is insufficient to meet water quality goals, additional off-site landscape modifications may be necessary.

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Global sensitivity and uncertainty analysis of nitrate leaching and crop yield simulation under different water and nitrogen management practices

Computers and Electronics in Agriculture ◽

10.1016/j.compag.2017.09.010 ◽

2017 ◽

Vol 142 ◽

pp. 201-210 ◽

Cited By ~ 5

Author(s):

Hao Liang ◽

Zhiming Qi ◽

Kendall C. DeJonge ◽

Kelin Hu ◽

Baoguo Li

Keyword(s):

Uncertainty Analysis ◽

Crop Yield ◽

Nitrate Leaching ◽

Management Practices ◽

Nitrogen Management ◽

Global Sensitivity ◽

Crop Yield Simulation ◽

Sensitivity And Uncertainty Analysis

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Economics of in-Season Nitrogen Management Practices for Corn Production

Agricultural Research & Technology Open Access Journal ◽

10.19080/artoaj.2017.05.555660 ◽

2017 ◽

Vol 5 (2) ◽

Author(s):

Sami Khanal

Keyword(s):

Management Practices ◽

Nitrogen Management ◽

Corn Production

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Concepts and Practices for Improving Nitrogen Management for Vegetables

HortTechnology ◽

10.21273/horttech.2.1.121 ◽

1992 ◽

Vol 2 (1) ◽

pp. 121-125 ◽

Cited By ~ 9

Author(s):

George J. Hochmuth

Keyword(s):

Water Management ◽

Management Practices ◽

Management Strategies ◽

N Fertilization ◽

Nitrogen Management ◽

Land Grant ◽

Land Grant Universities ◽

Production Practices ◽

Negative Impacts ◽

N Management

Efficient N management practices usually involve many potential strategies, but always involve choosing the correct amount of N and the coupling of N management to efficient water management. Nitrogen management strategies are integral parts of improved production practices recommended by land-grant universities such as the Institute of Food and Agricultural Sciences, Univ. of Florida. This paper, which draws heavily on research and experience in Florida, outlines the concepts and technologies for managing vegetable N fertilization to minimize negative impacts on the environment.

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