Toxicity of Five Granular Herbicides to Sitka Spruce and Lodgepole Pine |
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Authors: | THOMPSON, J.H. MAYHEAD, G.J. |
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Affiliation: | Forestry Commission Research and Development Division Roslin, Midlothian |
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Abstract: | Experimental plots in young plantations of Sitka spruce andlodgepole pine were over-dosed with five granular herbicidesto ascertain the margin of crop safety involved in the use ofpropyzamide, chlorthiamid, dichlobenil, dichlobenil/dalaponmix and atrazine. It is concluded that if the five herbicidesare applied according to the standard rates and dates used inthe experiments, tree damage will be kept to an acceptable minimum.Better shoot growth resulted from herbicide treatment than fromhand weeding particularly where atrazine was used. |
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