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  • Author or Editor: C. Edward Beste x
  • Journal of the American Society for Horticultural Science x
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Abstract

Two annual applications of oxyfluorfen (2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene), oxadiazon (2-tert-butyl-4(2,4-dichloro-5-isopropoxyphenyl)-Δ2-1,3,4-oxadiazolin-5-one) or prodiamine (2,4-dinitro-N3,N3-dipropyl-6-(trifluoromethyl)-1,3-benzenediamine) at 4.5 kg/ha controlled 80% of the weeds in several cultivars of newly-planted or established azaleas. Significant early season injury was observed in 1980 on ‘Hershey Red’, ‘Hinocrimson’, and ‘Delaware Valley White’ azaleas treated with DCPA (dimethyl tetrachloroterephthalate) at 11.2 kg/ha. Established ‘Hinocrimson’ azaleas treated with oxyfluorfen at 4.5 kg/ha were significantly larger than the control plants at the end of these experiments.

Open Access