标题：Ecological and Environmental Study of Eupatorium adenophorum Sprengel (Banmara) with Reference to its Gall Formation in Gorkha-Langtang Route, Nepal
摘要：Eupatorium adenophorum Sprengel is a forest killer widely spreading as weed in Nepal. A study on its ecology and utilization was carried out in central Nepal with reference to its gall formation. This banmara is attacked by Procecidochares utilis , a gall which causes metabolic and physical damage to the plant. The main field survey was done in Gorkha-Langtang area and compared with the phenomenon with that of Kathmandu Valley. It has been found that the index of exposure has no effect on the plant growth; pH also has no effect where as soil and gall formation has some effect on plant growth. Artemisia vulgaris and Urtica dioca were commonly found in association with Eupatorium adenophorum . Though the plant acts as forest killer, some beneficial phenomena were also recorded. Key words: Correlation coefficient; Gall formation; index of exposure; life cycle; quadrates Journal of Natural History Museum Vol. 23, 2008 Page 108-124
关键词：Correlation coefficient;Gall formation;index of exposure;life cycle;quadrates
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