Treatment of Container Seedlings in the Nursery Against Large Pine Weevil
An experimental tunnel sprayer for treating seedlings with insecticides against the large pine weevil-Hylobius abietis (L.)was built and tested at the Suonenjoki Research Station and Nursery. The goal was to achieve an efficient and effective system for distributing insecticide that is also safe for the operator. Permethrin was distributed over about 80% of the seedling shoot when the inventory method was used for determination, but over 100% according to a visual check. Treating 1,000 seedlings cost $1.40 for labor and $4.21 for total costs. Treating seedlings was more efficient and economical at the nursery than at the planting site. The workers' exposure to permethrin was far below the 5-mg/m3 limit in Finland. The measured contamination of the hands and protective clothing confirmed that the correct use of personal protective equipment in pesticide work is necessary. Tree Planters' Notes 45(1):5-9; 1994.
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Author(s): Leo Tervo, Juhani Kangas, Martii Kuikka, Riitta Sarantila
Publication: Tree Planters' Notes - Volumes 45, Number 1 (1994)
Section: Technical Tips
Volume: 45
Number: 1
