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ISHS Acta Horticulturae 502: II WOCMAP Congress Medicinal and Aromatic Plants, Part 3: Agricultural Production, Post Harvest Techniques, Biotechnology

DISEASES AND PESTS ON BULGARIAN OIL-BEARING ROSE (ROSA KAZANLIKA V.T. = ROSA DAMASCENA MILL. VAR. KAZANLIKA)

Authors:   A. Margina, I. Lecheva, L.E. Craker, V.D. Zheljazkov
Keywords:   Roses, essential oil crops, aromatic plants, pests, diseases
DOI:   10.17660/ActaHortic.1999.502.38
Abstract:
Oil bearing rose is the most important and essential oil crop in Bulgaria. During the period 1993–1996, on the experimental field of the Research Institute for Roses, Aromatic and Medicinal Plants in Kazanlik, Bulgaria, and in the adjacent rose plantations, we conducted regular observation at 10 day intervals in order to clarify pests and diseases appearance, development, density, distribution and damages on roses.

It was found that of diseases, the most severe damages on roses were caused by rust (Phragmidium mucronatum Pers.) and black spot (Diplocarpon rosae Wolf.). Of the rose attacking pests, the cane borer (Agrilus cuprescens Men.), rose curculio (Homalorynchites hungaricus Fussly.), rose scale insect (Rodoccocus bulgariensis Wunn.), rose chafer (Epicometis hirta Poda.) and Phylloperta horticola proved to be the most destructive. A tendency towards a gradual increasing of the population density in pests of no economic significance has also been recorded.

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