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Potentially Beneficial Uses of Sulfuric Acid In Southwestern Agriculture¹

ABSTRACT

Production of sulfuric acid is projected to exceed market demand in the southwestern USA if current air pollution control regulations are fully implemented by means of acid plants. Considerable quantities of surplus acid can be used beneficially for reclaiming sodium-affected calcareous soils, increasing the availability of phosphorus and certain micronutrients, treating alkaline and ammoniated irrigation water, controlling certain weeds and soil-borne pathogens, improving range grass establishment and growth, and for several other purposes. Principles involved in these uses are reasonably well-established, but studies are required to determine effective use especially in the area of field application.

Key Words: soil and water amendment • waste disposal and management • air pollution abatement

¹ Arizona Agric. Exp. Sta. No. 2435. Contribution from the Department of Soils, Water, & Engineering, The University of Arizona, Tucson, AZ 85721. Support in part by a grant from the Arizona Mining Association.

² Research Associates and Associate Professor, respectively. The senior author is now at the Department of Agronomy, New Mexico State University, Las Cruces, NM 88003.

Received for publication January 23, 1975.

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