Miners of the genus Eriocrania - pests on birch with gradation potential
2000
Kula, E. (Mendelova Zemedelska a Lesnicka Univ., Brno (Czech Republic). Lesnicka a Drevarska Fakulta)
Phenology of occurrence, species spectrum, population dynamics, rate of development and food requirements of miners of the Eriocrania genus were studied in birch stands in the eastern part of the Ore Mts. and in the area of Decinska piskovcova vrchovina (Decin Sandstone Highlands). Local mass outbreaks in the areas at a height of 500-700 m above sea level confirmed their gradation potential and an increased level of threat to birch stands in a vernal aspect. Ten wintering larvae per square m of Eriocrania sp. miners appear to be a critical number.
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