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Redox Potentials and Denitrification in a Cropped Potato Processing Waste Water Disposal Field

Smith, J.H. and Gilbert, R.G. and Miller, J.B. (1976) Redox Potentials and Denitrification in a Cropped Potato Processing Waste Water Disposal Field. Journal of Environment Quality. 5(4):397-399.

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Abstract

Many potato processors apply processing waste water containing nitrogen and other plant nutrients to cropped land. More than 1 metric ton of N per hectare was applied each year when waste water application averaged 230 cm/year on one field for 2 years. Less than 300 kg N/ha was recovered in the harvested grass hay, and only about 15 kg N/ha leached each season. Redox measurements made at several depths from 5 to 150 cm showed poorly aerated zones in the soil profile because of a high water table during the summer. Under these conditions, nitrate leached into these poorly aerated zones would be denitrified. Sufficient decomposable organic matter was present to provide energy for denitrification.

Item Type: Article
NWISRL Publication Number: 0362
Subjects: Irrigated crops > Potato
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:51
Last Modified: 09 Feb 2017 18:41
Item ID: 309
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/309

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