The occurrence of fungal and insect pests in riparian stands of the central Hron and Slatina rivers
2006
J. Kodrík | M. Kodrík | P. Hlaváč
The paper deals with the occurrence of fungi and rusts, viruses and insects on main woody species in riparian stands along the middle courses of the Slatina and Hron rivers in Slovakiain 2002-2004. Forty fungal species, rusts and viruses and 79 insect species were found. The highest number of fungi occurred on the branches and twigs of poplar where Cryptodiaporthe populea (Sacc.) Butin and Phellinus igniarius (L.) Quél. had the highest representation and so the influence on the health condition. Melampsora alliipopulina Kleb., Poplar mosaic carlavirus, Venturia po-pulina (Vuill.) Fabr. and Venturia tremulae Aderh dominated on the leaves. The most frequently present fungus on the aspen was Armillaria sp., Phellinus igniarius (L.) Quél., on the alder a new hybrid from the genus Phytophthora - alder Phytophthora, Valsa oxystoma Rehm., Inonotus radiatus (Sowerby) P. Karst. and Inonotus obliquus (Fr.) Pilát. From the insect species Melasoma vigintipunctata Scop. and Phyllodecta vitellinae L. caused total defoliation on willows. The highest occurrence on the black poplar was on the leaf stalks represented by Pemphigus spirothecae Pass. species, on the alder it was Cryptorrhinchidius lapathi L. on the twigs and Agelastica alni L. on the leaves.
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