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Mites associated with parks and ornamental gardens in urban area - Bucharest

Published in Scientific Papers. Series B. Horticulture, Vol. LVI
Written by Cătălin GUTUE, Minodora GUTUE, Ioan ROŞCA

The paper presents the species of mites found on woody plants and flower plants from parks and ornamental gardens or private ornamental gardens in the north of Bucharest. It describes the frequency of attack, host plants, preference for a host plant, attack distribution on plant, the conditions for the attack to produce, the unaesthetic aspect of the attacked plant and possibilities of control. The excessive drought and high temperatures during the summer months favours the development of phytophagous mites, species belonging to the families Tetranychidae (Tetranychus urticae Koch., Eotetranychus tiliarium Hermann), Eriophyidae (Eriophyes tiliae exilis Nal., Eriophyes tiliae rudis Nal., Eriophyes triradiatus Nal.) and Tarsonemidae (Polyphagotarsonemus latus Banks). These species of mites have as host plants species of genera Tilia (T. cordata, T. platyphyllos, T. tomentosa), Salix (S. babylonica, S. matsudana ”tortuosa”), Rosa, Impatiens etc. These pests sting and suck the sap from the plants, the leaves become yellow, dry and fall. The loss of leaves during the summer period reduces the accumulation of substances for provisions, the plants become sensitive to frost and draught and their ornamental value decreases. The paper also presents Schizotetranychus (Stigmeopsis) celarius Banks species, pest new to Romania, which entered the country with the host plant Phyllostachys aureosulcata. S. celarius produces a white web, in the shape of a nest, on the lower side of the Phyllostachys aureosulcata leaves. On the feeding site appear white-yellow spots that may look similar to variegation. Knowing, identifying and controlling these mites is very important in order to maintain the decorative value of plants from parks and gardens.

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