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Soil-Plant Response to Surface-Applied Mercury¹

ABSTRACT

Mercury from an organomercurial fungicide accumulated in surface soils, with negligible lateral migration, following annual applications of 2.10 kg/ha over a period of 15 years. No toxicity was apparent from relatively high soil levels of Hg (455 ppm) on the growth of velvet bentgrass (Agrostis canina L.). Elemental composition of turf plants showed 1.68 ppm Hg with normal levels of other transition elements (Mn, Fe, Cu, Zn).

Key Words: turf plants • tissue composition • soil analysis

¹ Published with the approval of the Director of the New Hampshire Agr. Exp. Sta. as Scientific Contribution no. 607.

² Associate Professor and Extension Turf Specialist, Department of Plant Science, Univ. of New Hampshire, Durham; and Pesticides Surveillance Scientist, New Hampshire Water Supply and Pollut. Contr. Comm., Concord; respectively.

Received for publication October 18, 1972.