Agricultural and Biosystems Engineering Publications

Document Type

Article

Publication Version

Published Version

Publication Date

1989

Journal or Book Title

Transactions of the ASAE

Volume

32

Issue

3

First Page

934

Last Page

938

Research Focus Area(s)

Land and Water Resources Engineering

DOI

10.13031/2013.31094

Abstract

A field experiment was conducted to evaluate the effect and reliability of soil sample volume on nitrate-nitrogen (NO3-N) and soil-water content in the soil. Four soil sampling devices (a 20.3-cm power earth auger, a 5.1-cm hand earth auger, a 3.2-cm soil probe and a 1.9-cm soil probe) were used to collect soil samples from 35 conventionally tilled and 35 no-till locations. Soil samples were taken at 30-cm intervals to a depth of 150 cm with each of the four sampling devices and were analyzed for NO3-N and moisture contents. Results of this study indicate that sample volume has no significant effect on determining soil-moisture content. Sample volume also had no effect on NO3-N concentration in the soil water under no-till conditions but had a definite impact on the NO3-N levels in the conventionally tilled soils. Results further indicate that a 5.1-cm diameter sample may best predict the quantity of residual soil NO3-N.

Comments

This article was published in Transactions of the ASAE 32 (1989): 934–938, doi:10.13031/2013.31094. Posted with permission.

Copyright Owner

American Society of Agricultural and Biological Engineers

Language

en

File Format

application/pdf

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