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Journal of Soil and Water Conservation,
published by Soil & Water
Conservation Society on July 1, 1993. The length of the
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From the author: ABSTRACT Nitrate transport rates were measured in the fine-textured vadose zone of eight irrigated research plots fertilized at rates of 0, 336 (300), and 448 kg N/ha (400 lbs N/ac). Five years earlier nitrate loading in the vadose zone of these plots was positively associated with a long-term history of N-fertilizer applications. Lag correlations between the 1985 and 1990 [NO.sub.3-N] data confirmed that [NO.sub.3-N] beneath four of the five fertilized plots moved as identifiable zones. The vertical transport rate of the [NO.sub.3-N] was 76 cm/yr (30 in/yr). These estimates compare favorably with previously reported rates for fine-textured sediments from dryland fields. Precipitation, which annually amounts to 66 cm/yr (26 in/yr), appears to have been the driving force for the vertical [NO.sub.3-N] transport.
From the supplier: Nitrate transport rates studied in the vadose region of eight irrigated research plots showed rates of 0,336 (300) and 448 kg N/ha (400 lbs N/ac). Correlations between 1985 and 1990 showed that the transport rate of the NO3-N was approximately 76 in/yr (30 in/yr). The main reason for the vertical NO3-N transport is precipitation, which annually amounts to 66 in/yr (26 in/yr).
Citation DetailsTitle: Nitrate-N movement in a fine-textured vadose zone.
Author: M.W. Bobier
Publication:Journal of Soil and Water Conservation (Refereed)
Date: July 1, 1993
Publisher: Soil & Water Conservation Society
Volume: v48
Issue: n4
Page: p350(5)
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