HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Hassan, H. M. Articles by Amoozegar-Fard, A. Search for Related Content PubMed Articles by Hassan, H. M. Articles by Amoozegar-Fard, A. Agricola Articles by Hassan, H. M. Articles by Amoozegar-Fard, A.

Sampling Volume Effects on Determining Salt in a Soil Profile¹

ABSTRACT

The effects of soil sampling volume for determining salt present were investigated in situ. Six 2.2-m² plots were hand sprinkled over a 5-d period with a total of 10 cm of water containing 1000 mg/L of chloride as CaCl₂. Soil samples were taken at three locations within each plot at 10-cm increments to 100 cm and at 20-cm increments to the 160-cm depth. Two different samplers, 7.9- and 2.1-cm diameter, were used. The salt concentration was measured on a 2:1 extract. The measurements for the larger samples were less variable than the smaller samples. The coefficient of variability (CV) for the total chloride recovered was 8 and 14% for the large and small samples, respectively. In order to compare favorably to the known amount added, the effective radius of the sampling tool was critical. The CV for the chloride concentration calculated in the soil water ranged from 5 to 54% and 12 to 199% for large and small samples by depth.

¹ Contribution from the Arizona Agric. Exp. Stn., Tucson, AZ 85721. Journal Paper no. 3685. Support by Western Regional Project W-155.

² Graduate Student, Professor, and Research Associate, respectively, Dep. of Soils, Water and Engineering, the Univ. of Arizona.

Received for publication November 15, 1982. Accepted for publication July 1, 1983.