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Studies on Infertile Soils II. Soils High in Barium¹

ABSTRACT

A number of soils very high in barium have been analyzed chemically and the exchangeable bases and other constituents determined by leaching with ammonium acetate solutions. The soils contained from 0.08 to 3.74 per cent Ba0.

Some of the most fertile soils contained the most barium but in these soils the barium is mainly present as barite and there is an excess of soluble calcium and magnesium over soluble barium.

Most of the infertile high barium soils contained an excess of barium over sulphur and in these soils the soluble calcium and magnesium are low and nearly equalled or exceeded by the soluble barium.

¹ Contribution from Division of Soil Chemistry and Physics, Bureau of Plant Industry, U. S. Dept. of Agriculture, Washington, D. C.

² Senior Chemist, Under Scientific Helper, and Principal Chemist, respectively.