Abstract
In memoriam Prof. F.J. Stevenson and the Question of humic substances in soil
Highlights
In early January 1978, I landed on the Urbana–Champaign airfield as the first snowflakes of one of the coldest ever winters of the US Midwest just began to stick to the ground
The understanding of Frank Stevenson of the nature of soil humic substances was anchored in the interpretation formed in the fifties by the Russian soil scientist, Prof
The poor analytical capability at the time, the apparent similarities of the characteristics of humus in different soil classes and the impact of the modern biopolymer techniques which, Frank Stevenson had adapted for humic studies for the Ph.D. degree at Ohio State University, brought him and others who followed to view humic substances as high-molecular-weight polyelectrolytes synthesized de novo in soil [1]
Summary
In early January 1978, I landed on the Urbana–Champaign airfield as the first snowflakes of one of the coldest ever winters of the US Midwest just began to stick to the ground. The poor analytical capability at the time, the apparent similarities of the characteristics of humus in different soil classes and the impact of the modern biopolymer techniques which, Frank Stevenson had adapted for humic studies for the Ph.D. degree at Ohio State University, brought him and others who followed to view humic substances as high-molecular-weight polyelectrolytes synthesized de novo in soil [1].
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