Sosnovskio barščiai
Posted: Thu 05 06, 2004, 9:15
Įdomūs augalai tie barščiai, bet, kiek suprantu, Lietuvoje labiausiai plinta pavojingasis Sosnovskio barštis. Išauga jis iki 3 metrų aukščio. Plinta savaime.
Informacija apie tai:
Борщевик Сосновского - (Heracleum sosnowskyi).
В средней полосе России в мае начинается цветение Heracleum sosnowskyi, борщевика Сосновского - огромного трехметрового растения, произрастающего обычно по обочинам дорог, оград дачных участков, на лесных полянах и опушках.
Он содержит особые вещества - фурокумарины, которые действуют как фотосенсибилизаторы: при попадании на кожу они делают ее чувствительной к солнцу.
Под воздействием солнечного облучения способен вызывать ожоги кожи, поэтому собирать растение нужно в перчатках. Его свежие пристеблевые и прикорневые листья непригодны в пищу без предварительной кулинарной обработки. Они имеют сильный ароматический запах и горьковатый привкус из-за большого количества эфирных масел и кумаринов.
Palčiau apie barščius skaitykite http://yadflora.hotbox.ru/128.html
O čia ištrauka iš estų aplinkos apsaugos ministerijos tinklapio apie kovą su Sosnovskio barščiais:
Fight against Heracleum sosnowskyi beginning
The Ministry of the Environment invites all people in whose land plants of the invasive hogweed species (mainly Heracleum sosnowskyi) are found, causing risk both to human health and the other species, to start fighting those right away. The beginning of spring is the best time for this purpose as the plants are small and fragile and it is easier to get rid of those. In summer when the plants will have grown up to three metre’s height and may cause cases of skin lesion and burns, fighting with those is much more difficult and less successful.
According to Ms. Liina Eek-Piirsoo, Chief Specialist of the Nature Protection Department, cutting through of the roots is considered to be the most efficient method for getting rid of the hogweed.
"It would be possible to get rid of the Heracleum sosnowskyi in four years if the main root of the plant would be cut through at least twice a year at some 10 cm below the soil surface. The other methods of mechanical damaging - mowing and picking umbels - are less efficient and would need more time (even up to eight years) for getting rid of the local hogweed population. Late mowing is of practically no use as the mowed plant will develop very low umbels already in two weeks and the plant will bear fruits anyway," said Ms. Eek-Piirsoo.
The only thing to be done in the summer season would be the picking of umbels and destroying of those through burning, thus preventing further spreading of the species. The umbels should not be composted as the seeds might then preserve their viability and this would contribute to further spreading of the plant.
O čia šiek tiek istorijos:
Around 40 years ago silage production with Heracleum sosnowskyi, which is closely related to H. mantegazzianum and also originating from the Caucasus was initiated in the Baltic States as well as in other parts of the former Soviet Union. However, due to health problems for the staff during harvesting, the cultivation of the plant ceased around 1980. The sap of the plant is phytophototoxic to humans and produces severe blistering and a rash that can last for several months.
Informacija apie tai:
Борщевик Сосновского - (Heracleum sosnowskyi).
В средней полосе России в мае начинается цветение Heracleum sosnowskyi, борщевика Сосновского - огромного трехметрового растения, произрастающего обычно по обочинам дорог, оград дачных участков, на лесных полянах и опушках.
Он содержит особые вещества - фурокумарины, которые действуют как фотосенсибилизаторы: при попадании на кожу они делают ее чувствительной к солнцу.
Под воздействием солнечного облучения способен вызывать ожоги кожи, поэтому собирать растение нужно в перчатках. Его свежие пристеблевые и прикорневые листья непригодны в пищу без предварительной кулинарной обработки. Они имеют сильный ароматический запах и горьковатый привкус из-за большого количества эфирных масел и кумаринов.
Palčiau apie barščius skaitykite http://yadflora.hotbox.ru/128.html
O čia ištrauka iš estų aplinkos apsaugos ministerijos tinklapio apie kovą su Sosnovskio barščiais:
Fight against Heracleum sosnowskyi beginning
The Ministry of the Environment invites all people in whose land plants of the invasive hogweed species (mainly Heracleum sosnowskyi) are found, causing risk both to human health and the other species, to start fighting those right away. The beginning of spring is the best time for this purpose as the plants are small and fragile and it is easier to get rid of those. In summer when the plants will have grown up to three metre’s height and may cause cases of skin lesion and burns, fighting with those is much more difficult and less successful.
According to Ms. Liina Eek-Piirsoo, Chief Specialist of the Nature Protection Department, cutting through of the roots is considered to be the most efficient method for getting rid of the hogweed.
"It would be possible to get rid of the Heracleum sosnowskyi in four years if the main root of the plant would be cut through at least twice a year at some 10 cm below the soil surface. The other methods of mechanical damaging - mowing and picking umbels - are less efficient and would need more time (even up to eight years) for getting rid of the local hogweed population. Late mowing is of practically no use as the mowed plant will develop very low umbels already in two weeks and the plant will bear fruits anyway," said Ms. Eek-Piirsoo.
The only thing to be done in the summer season would be the picking of umbels and destroying of those through burning, thus preventing further spreading of the species. The umbels should not be composted as the seeds might then preserve their viability and this would contribute to further spreading of the plant.
O čia šiek tiek istorijos:
Around 40 years ago silage production with Heracleum sosnowskyi, which is closely related to H. mantegazzianum and also originating from the Caucasus was initiated in the Baltic States as well as in other parts of the former Soviet Union. However, due to health problems for the staff during harvesting, the cultivation of the plant ceased around 1980. The sap of the plant is phytophototoxic to humans and produces severe blistering and a rash that can last for several months.