Effect of forest fertilization on pine needle-feeding Coleoptera.

Heliövaara, Kari; Löyttyniemi, Kari

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Silva Fennica vol. 23 no. 4 article id 5390 | 1989 | Article

Kari Heliövaara , Kari Löyttyniemi

Effect of forest fertilization on pine needle-feeding Coleoptera.

Heliövaara K., Löyttyniemi K. (1989). Effect of forest fertilization on pine needle-feeding Coleoptera. Silva Fennica vol. 23 no. 4 article id 5390. https://doi.org/10.14214/sf.a15548

Abstract

The effects of forest fertilizers on the intensity of damage caused by two curculionid (Brachyderes incanus L., Brachonyx pineti Paykull) and two chrysomelid (Calomicrus pinicola Duft., Cryptocephalus pini L.) species feeding as adults on Scots pine (Pinus sylvestris L.) needles were investigated in two pine stands growing on dry (Calluna type) sites in South-West Finland. There was much variation in the abundance of the insect species both between the trials and the sample plots. Nitrogen fertilization increased both the height and radial growth of the pines. The curculinids were slightly more abundant on the nitrogen-treated plots. Potassium application seemed to decrease the feeding intensity of the chrysomelids especially. The overall effects were so small that forest fertilization cannot be considered as an effective control method against needle-feeding beetles.

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Keywords
Pinus sylvestris; herbivores; Chrysomelidae; Curculionidae; fertlization

Published in 1989

Available at https://doi.org/10.14214/sf.a15548 | Download PDF

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