Leaching of Added Selenium from Alkaline Soils as Influenced by Sulfate

Brown, M.J. and Carter, D.L. (1969) Leaching of Added Selenium from Alkaline Soils as Influenced by Sulfate. Soil Science Society of America Proceedings. 33(4):563-565.

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Abstract

A BaSO₄-BaSeO₄ mixture (S:Se = 10) and BaSeO₄ alone
were applied at 1.60 and 3.20 mg Se per column to two soils
and leached with water or gypsum solution. Eight hundred
milliliters (10-cm depth) of leaching solution were added to
columns containing 2,100 g of Portneuf silt loam and 2,500 g
of Gooding loamy sand at 4-week intervals for 20 weeks. More
Se was leached by gypsum solution than by water from all
columns. Where 1.60 mg Se per column was applied, more Se
was leached from Gooding loamy sand than from Portneuf silt
loam soil with both water and gypsum solution. Where 3.20 mg
Se per column was applied, more Se was leached by water
from Gooding than from Portneuf soil, but the reverse was true
with gypsum solution. The Se leached from the Portneuf soil
treated with the BaSO₄-BaSeO₄ mixture ranged from 0.34 mg,
where 1.60 mg Se per column was applied and soils leached
with water, to 2.32 mg, where 3.20 mg Se per column was
applied and soils leached with gypsum solution.
Much less Se was leached where only BaSeO₄ was applied
to Portneuf soil. The amount leached ranged from 0.07 mg,
where 1.60 mg Se was applied and water used for leaching,
to 0.64 mg Se, where 3.20 mg Se was applied and gypsum
used for leaching. The Se recovery from the Gooding soil was
within these ranges for the same treatments. The Se leached
increased with application rate, but not proportionately. The
data indicate that addition of SO₄²- increases the solubility of
BaSeO₄ in these soils.

Item Type:	Article
NWISRL Publication Number:	0142
Subjects:	Soil > Chemistry > Selenium Soil > Chemistry > Sulfur Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:49
Last Modified:	14 Mar 2017 22:17
Item ID:	79
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/79