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Book: Proceedings of the Second International Turfgrass Research Conference
Published by: American Society of Agronomy, Crop Science Society of America



  1.  p. 399-409
    Proceedings of the Second International Turfgrass Research Conference

    Eliot C. Roberts (ed.)

    ISBN: 978-0-89118-573-4


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Use of activated charcoal to nullify the harmful effects of chemicals in turfgrass1

  1. J.A. Jagschitz


Herbicide residues in soil often cause turfgrass seedings to fail and the misuse of chemicals on turfgrass can result in grass injury. Studies were initiated to determine if activated charcoal would adsorb various chemicals and nullify their harmful effects. The effectiveness of herbicides following charcoal treatment was also studied.

Activated charcoal improved stands when seedbeds contained 2,4-D, A-820, bandane, benefin, bensulide, DCPA, dicamba, MBR-8251, mecoprop, nitralin, picloram, oxadiazon, silvex, simazine, and terbutol. Twelve other chemicals either did not inhibit seedings or were not deactivated by charcoal.

Charcoal alleviated damage to established turfgrass from 2,4-D, 2,4,5-T, bromoxynil, dicamba, endothall, linuron, silvex, and simazine. Injury from nine other chemicals was not reduced by charcoal.

The herbicidal activity of bensulide was not reduced where charcoal was used in seedbeds the year before. The activity of bensulide, and possibly DCPA and siduron, was reduced where charcoal was used on turfgrass 5 months earlier. No reduction was noted where charcoal was used 17 months earlier. Higher rates of charcoal caused greater reductions; higher herbicide rates counteracted these reductions. Additional index words: Residues, Herbicides, Seedling survival, Grass injury, Adsorption.

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Copyright © 1974. Copyright 1974 by the American Society of Agronomy, Inc. and the Crop Science Society of America, Inc., 5585 Guilford Rd., Madison, WI 53711 USA