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Status Report on Soil Conditioning Chemicals. II.¹

ABSTRACT

Two synthetic soil conditioning chemicals, hydrolyzed polyacrylonitrile and a modified vinyl acetate maleic acid compound, are described. The effects of conditioner treatment upon the physical, chemical, and biochemical status of the soil, as well as plant composition, yield, and quality are outlined.

Observable results of economic importance are discussed, including improved soil workability, reduced soil crusting, effective erosion control, improved crop yields and quality, and earlier planting and maturity.

Lines of further research are suggested which may ultimately lead to a better understanding of soil structural relationships and the efficient use of soil conditioner chemicals.

Factors influencing specific application recommendations are examined.

¹ Presented before the General Meeting, Soil Science Society of America, Cincinnati, Ohio, November 18, 1952.

² Agronomist and Manager of Agricultural Chemicals Section, and Soil Biochemist, respectively, Organic Chemicals Division, Monsanto Chemical Company, St. Louis, Mo.

Received for publication December 9, 1952.