"Comments on the immediate health condition of birch stands in the air polluted region of the Ore Mts." . "Kula, Emanuel" . "197" . "5" . . "45" . "Comments on the immediate health condition of birch stands in the air polluted region of the Ore Mts." . "Comments on the immediate health condition of birch stands in the air polluted region of the Ore Mts."@en . . "RIV/62156489:43410/99:47100011" . . "3"^^ . . . "RIV/62156489:43410/99:47100011!RIV/2000/MSM/434100" . "CZ - \u010Cesk\u00E1 republika" . "737148" . . . . "1212-4834" . "Kula, Emanuel" . . "Journal of Forest Science" . . "P(GA526/98/0537), Z(MSM 434100005)" . . "43410" . "Comments on the immediate health condition of birch stands in the air polluted region of the Ore Mts."@en . . "Zabecka, Jadwiga" . . "No principal reversal in the development of factors affecting the health condition of birch stands (insects, fungus patogens) which might have been the direct cause or could have predisposed the unflushing of birch was found. Quantitative analysis of nutrient elements did not explain such an extensive physiological disorder either. The condition of epicuticular wax is evidence of the increased pollutant load in the highest areas of the Ore Mts. A hypothesis was expressed that a higher amount of ethylene pollutants might have had a specific impact on birch at the time when new leaf buds were established and later they were maybe more sensitive to frost or warmer winter episode."@en . "9"^^ . "No principal reversal in the development of factors affecting the health condition of birch stands (insects, fungus patogens) which might have been the direct cause or could have predisposed the unflushing of birch was found. Quantitative analysis of nutrient elements did not explain such an extensive physiological disorder either. The condition of epicuticular wax is evidence of the increased pollutant load in the highest areas of the Ore Mts. A hypothesis was expressed that a higher amount of ethylene pollutants might have had a specific impact on birch at the time when new leaf buds were established and later they were maybe more sensitive to frost or warmer winter episode." . "[C7689F660EFD]" . "1"^^ . "Ryb\u00E1\u0159, J." .