| 摘要 |
PROBLEM TO BE SOLVED: To reduce the development of pollinosis or the like by controlling the prevention of harmful parasite such as the one of pine wilt disease or the like, and the growth of a host plant. SOLUTION: A parasitic plant such as a mistletoe hardly affecting the host plant and acting on the parasitic pathogen is set at a required position of the host plant. COPYRIGHT: (C)2007,JPO&INPIT
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