Proceedings of the Sixty-first Annual Meeting of the Northeastern ...

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Table 2. Plant quality ratings on Douglas Fir at Elizabeth and Unangst Farms on May 31
and July 18, 6 and 13 weeks after treatment. Treatments were direct sprayed on April
20, 2006. Plant quality ratings are on a scale of 1-10 with 1 = dead and 10 = highest
quality plant.
Elizabeth Farm
Unangst Farm
Treatment Lb May July May July
a.i./A 31 18 31 18 1/
Untreated - 9.8 a 9.7 ab 8.9 ab 9.8 a
Sulfometuron 0.023 9.3 bc 9.4 bc 8.8 ab 9.7 a
Hexazinone 0.469
Surfactant
0.25% v/v
Sulfometuron 0.035 9.8 a 9.6 ab 8.8 ab 9.7 a
Hexazinone 0.70
Surfactant
0.25% v/v
Sulfometuron 0.047 9.0 c 9.1 c 8.8 ab 9.8 a
Hexazinone 0.938
Surfactant
0.25% v/v
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Westar 75.1WG 0.28 9.8 a 9.8 ab 8.9 ab 9.9 a
Surfactant
0.25% v/v
Westar 75.1WG 0.375 9.5 ab 9.7 ab 8.7 ab 9.8 a
Surfactant
0.25% v/v
Westar 75.1WG 0.469 9.8 a 10.0 a 8.6 b 9.9 a
Surfactant
0.25% v/v
Westar 75.1WG 0.562 9.5 ab 9.8 ab 8.9 ab 9.7 a
Surfactant
0.25% v/v
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Flumioxazin 0.25 9.8 a 9.8 ab 9.2 a 9.7 a
Glyphosate 0.0625
Oryzalin 2.0
1/ Means within columns for each species, followed by the same letter, do not differ at
the 5% level of significance (DMRT)
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