Coroebus elatus and Otiorrhynchus rugosostriatus, pests of strawberry root

Abstract

The strawberry plants damage, caused by larvae of Coroebus elatus F. and Otiorrhynchus rugosostriatus Goeze is established in 2005. in the locality Malo Orašje (region of Smederevo). C. elatus has one generation and overwinters as a larva in the root. O. rugosostriatus overwinters in different larval instars in the soil. Adults of both species feed on strawberry leaves but without serious damages. The larvae, however, are very harmful. Larva of C. elatus makes spiral galeries throught the root, but O. rugosostriatus larvae feed on the root and also bore into the central part of a root. Infested plants have yellow and wither leaves and than the whole plants died. Control of C. elatus and O. rugosostriatus is possible by removing and destroying infested plants and spontaneous plants of Rosaceae. Chemical control can be used only after harvest and in the period of adults activity.

Na širem području Smedereva, tokom 2005. godine, kod većeg broja individualnih proizvođača jagode registrovano je masovno sušenje biljaka. Uzročnici ovog sušenja bile su dve insekatske vrste, Coroebus elatus F. i Otiorrhynchus rugosostriatus Goeze, koje se, inače, za područje Srbije smatraju najznačajnijim štetočinama jagode. U prirodi se održavaju na samoniklim biljkama iz familije Rosaceae, sa kojih povremeno prelaze na gajenu jagodu. Glavne štete nastaju usled ishrane larvi na i u korenu jagode, što ima za posledicu sušenje biljaka.