ÐåçþìåÁèîàãåíòè çà êîíòðîë íà ïëåâåëèòå ñå èçïîëçâàò ïîâå÷å îò 100 ãîäèíè. Ìåòîäúò íà êëàñè÷åñêèÿ áèîëîãè÷åí êîíòðîë, êîéòî ñå ñúñòîè â èíòðîäóöèðàíå íà ïîäõîäÿùè åñòåñòâåíè íåïðèÿòåëè, ÷åñòî âîäè äî óñïåøíî êîíòðîëèðàíå íà ïîïóëàöèèòå íà íåaeåëàíàòà ðàñòèòåëíîñò. Òîé ñå èçïîëçâà â öåëèÿ ñâÿò è ñå ïðèåìà êàòî èêîíîìè÷åñêè åôåêòèâåí, åôèêàñåí è áåçîïàñåí çà îêîëíàòà ñðåäà. Äúëãîñðî÷íèòå ïðîãðàìè çà áèîëîãè÷íà áîðáà èçèñêâàò ìíîãî âíèìàòåëåí ïîäõîä è óïðàâëåíèå.  íàñòîÿùàòà ñòàòèÿ ñå ïðàâè ïðåãëåä íà ïðîãðàìèòå çà áèîëîãè÷åí êîíòðîë íà åäèí îò íàé-èíâàçèâíèòå è íàé-àãðåñèâíè ïëåâåëè -Chondrilla juncea L. (Asteraceae). Ñëåä äúëãîãîäèøíè èçñëåäâàíèÿ å ïîñòèãíàò çàäîâîëèòåëåí êîíòðîë íà ïëåâåëà â Àâñòðàëèÿ è â íÿêîè ùàòè íà Ñåâåðíà Àìåðèêà, õàðàêòåðèçèðàùè ñå ñ ïî-òîïúë êëèìàò. Ïðîäúëaeàâàò âñå îùå ïðîó÷âàíèÿòà çà ïîòåíöèàëíè áèîàãåíòè, êîèòî äà ñà åôåêòèâíè â ïî-õëàäíèòå àìåðèêàíñêè ùàòè, êàòî àêöåíò ñå ïîñòàâÿ âúðõó öåíòúðà íà ïðîèçõîä íà êðèâåöà, à èìåííî -Áàëêàíñêèòå ñòðàíè.  ðåçóëòàò íà ìàùàáíî ïðîó÷âàíå, ïðîâåäåíî ïðåç ïåðèîäà 2000-2007 ã., â Áúëãàðèÿ ñà óñòàíîâåíè 51 âèäà íàñåêîìè, êîèòî ñà â òðîôè÷íè âðúçêè ñ ðàñòåíèåòî ãîñòîïðèåìíèê è íàíàñÿò ïîâðåäè ïî êîðåíîâàòà ìó ñèñòåìà, ïî âåãåòàòèâíèòå è ãåíåðàòèâíèòå ìó îðãàíè. Çíà÷èòåëåí èíòåðåñ çà öåëèòå íà áèîëîãè÷íèÿ êîíòðîë ïðåäñòàâëÿâà íîùåíêàòà Schinia cognata Fr. (Lepidoptera:Noctuidae). AbstractAgents for biological control of weeds have been used for more than 100 years. The classical biological control, which is the introduction of adequate natural enemies from the homeland of a weed of foreign origin, often results in successful control of the weed populations. This method is used all over the world and is considered economically effective, efficient and environmentally safe. Long-term programmes for biological control require a very careful approach and management. The present paper overviews the existing programmes for biological control of one of the most invasive and most aggressive weeds -Chondrilla juncea L. (Asteraceae). After many years of research the weed is successfully controlled in Australia and some States of America with a year-round warmer climate. Further research on potential bioagents that could be effective in the States with a cooler climate is being carried out while focusing on the center of origin of the weed treated -the Balkan countries.As a result of a research conducted during 2000-2007, 51 insect species were identified, feeding on the host plant and causing damages on its root system, vegetative and reproductive parts. The moth Schinia cognata Fr. (Lepidoptera: Noctuidae) proved to be of significant scientific interest with regard to the purposes of the biological weed control.Êëþ÷îâè äóìè: Chondrilla juncea, áèîëîãè÷åí êîíòðîë íà ïëåâåëè, áèîàãåíòè. Key words: Chondrilla juncea, biological weed control, agents for biological control. ÂÚÂÅÄÅÍÈÅ ×îâåêúò âîäè áîðáà ñ ïëåâåëèòå îò ñàìîòî íà÷àëî íà çåìåäåëñêàòà ñè äåéíîñò. Íåçàâèñèìî îò òîâà ñúùåñòâóâàò îáøèðíè ïëîùè, çàåòè ñ íåaeåëàíà ïëåâåëíà ðàñòèòåëíîñò. Ñ èçîáðåòÿâàíåòî íà...
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