Full text of this article is only available in PDF format.

Maarit Kytö (email)

Lygus bugs as agents of growth disorders in permethrin-treated pine seedlings in regeneration areas.

Kytö M. (1992). Lygus bugs as agents of growth disorders in permethrin-treated pine seedlings in regeneration areas. Silva Fennica vol. 26 no. 4 article id 5487. https://doi.org/10.14214/sf.a15648

Abstract

The ability of Lygus bugs to cause growth disorders in permethrin-treated Scots pine (Pinus sylvestris L.) seedlings after planting was studied in two regeneration areas. There were three treatments: exposure of the seedlings to Lygus, mechanical protection of the seedlings from insects, and control seedlings. There were no significant differences in the rate of growth disorders between the treatments. The permethrin application protected the seedlings against Lygus bugs in the early summer, as well as when the bug abundance was low. The development of these seedlings, as well as the multiple-leadered and bushy seedlings on a third regeneration area, was followed for two years. Multiple leaders reduced height growth and bud number of a seedling, but caused marked losses in growth only when the seedlings still had multiple leaders the following year, or when they formed several, equally developed stems.
The PDF includes an abstract in Finnish.

Keywords
Pinus sylvestris; growth disorders; seedlings; Lygus; permethrin; bud disorders

Published in 1992

Views 2165

Available at https://doi.org/10.14214/sf.a15648 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Send to email
Kytö M., (1992) Lygus bugs as agents of growth disorders in perm.. Silva Fennica vol. 26 no. 4 article id 5487 (remove) | Edit comment
Your search results