Phytotoxicity of insecticides used to control aphids on Sitka spruce, Picea sitchensis (Bong.) Carr.

Crop Protection - Tập 15 - Trang 451-459 - 1996
N.A. Straw1, N.J. Fielding2, A. Waters2
1Entomology Branch, Forestry Commission Research Station, Alice Holt Lodge, Wrecclesham, Farnham, Surrey GU10 4LH UK
2Forestry Commission Research Division, Entomology Outstation, Whitcliffe, Ludlow, Shropshire SY8 2HD, UK

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