Abstract
Poa pratensis was exposed to the postemergence herbicides 2,4-D, MCPP, and dicamba at concentrations of 10−6 M applied to the soil surface. Sequentially older leaf blades were inoculated withBipolaris sorokiniana and detached to determine the effect of the herbicides on saprophytic hyphal growth and sporulation on the tissue of each older leaf. 2,4-D and dicamba stimulated hyphal growth in vitro from leaf tissue of all ages; MCPP had no effect on hyphal growth. All herbicides increased sporulation byB. sorokiniana on leaf tissue of all ages. Both hyphal growth and sporulation increased progressively on tissue from sequentially older leaves ofP. pratensis exposed to dicamba.
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Journal Paper No. J-14985 of the Iowa Agriculture and Home Economics Experiment Station, Ames, Iowa, USA, Project No. 2616.
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Hodges, C.F. Vegetative growth and sporulation ofBipolaris sorokiniana on sequentially older infected leaves ofPoa pratensis exposed to postemergence herbicides. Mycopathologia 128, 105–109 (1994). https://doi.org/10.1007/BF01103017
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DOI: https://doi.org/10.1007/BF01103017