Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Plant Diseases and Pests in Denmark in 1935.

Abstract

This report includes (pp. 537-549) a list of the diseases and pests of cultivated plants observed in Denmark in 1935, together with notes by P. Bovien (pp. 562-566) on the more interesting pests, some of which were noticed in previous reports [R.A.E. A 24 55; 22 668, etc.] The others are Barypithes pellucidus, Boh., on cabbage, Cneorrhinus plagiatus, Schall., on swedes, Athalia rosae, L. (spinarum, F.) on turnips and radishes, Dolerus gonager, F., the adults of which are stated to have gnawed the buds and leaves of young fruit trees, Barathra (Mamestra) brassicae, L., on swedes and beet, and? onarthropalpus buxi, Lab., on box [Buxus. In localities where Paratetranychus pilosus, C. & F., was very abundant on apple, cocoons of the Coniopterygid, Conwentzia psociformis, Curt., were found in large numbers on the trunks, branches and fruit.