Water and Nitrogen Management Practices in the Central Platte Valley of Nebraska

by R. B. Ferguson, Univ of Nebraska, United States,
D. E. Eisenhauer, Univ of Nebraska, United States,
T. L. Bockstadter, Univ of Nebraska, United States,
D. H. Krull, Univ of Nebraska, United States,
G. Buttermore, Univ of Nebraska, United States,

Document Type: Proceeding Paper

Part of: Planning Now for Irrigation and Drainage in the 21st Century


Contamination of groundwater by nitrogen leached from fertilizer on irrigated soils is related to the quantity of nitrate present, the leaching potential based on soil texture and percent depletion of available soil water in the root zone, and the amount of water entering the soil profile. Scheduling irrigation according to available soil water depletion can reduce deep percolation to a certain extent. Grain yields are not appreciably affected by the use of these management practices, while in most cases input costs for fertilizer nitrogen and irrigation water are reduced.

Subject Headings: Nitrogen | Soil pollution | Groundwater pollution | Soil water | Irrigation | Nitrates | Groundwater depletion | Leaching | Nebraska | United States

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