Received for publication February 12, 1982. Approved by the Director of the New York State Agricultural Experiment Station as Journal Paper No. 3411. This work supported in part by a subcontract from the EPA-NADP Acid Precipitation Program (EPA Cooperative Agreement #CR806912-01-0 with North Carolina State University).
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.
Present address: Statewide Air Pollution Research Center, Univ. of California, Riverside, CA 92521.
Present address: Agricultural Research & Education Center, Univ. of Florida, 700 Experiment Station Rd., Lake Alfred, FL 33850.
The authors gratefully acknowledge the technical assistance of R. E. Melious, R. C. McMinn and K. M. Stone and thank Warren Knapp for providing local precipitation chemistry data.