检索结果-南通市图书馆

安徽农业大学学报 2007年第2期34卷 185-194页

作者：夏洛蒂.尼尔森 Susanne Vestergaard Susanne Harding JФrgen Eilenberg Department of Ecology Copenhagen UniversityFaculty of Life SciencesThorvaldsensvej 401871 Frederiksberg CDenmark

In Denmark,the weevils Strophosoma melanogrammum and *** cause economic damage in Noble fir due to the adult stage feeding on the *** chemical treatments of these weevils are allowed in Denmark,so biological control is an attractive *** evaluated the potential for microbial control of larvae of Strophosoma *** on laboratory bioassays and field applications,taking effect on both target and non-target into consideration,as well as persistence of the applied *** the laboratory Beauveria bassiana,Paecilomyces farinosus and Metarhizium anisopliae were able to infect and cause mycosis in Strophosoma *** the tested isolates the most virulent isolate was *** BIPESCO 5,which resulted in 80 % *** the field experiment ***,isolate BIPESCO 5,was applied to the soil as a conidial suspension against larvae of Strophosoma *** effect of the fungus on the target population was monitored at a weekly basis by counts of emerging adult weevils during their activity *** population of Strophosoma *** reduced by up to 60% in treated plots compared to control *** non-target effects of *** were studied by sampling insects and ticks from both treated and control *** days after treatment,two sampled insect orders(Hemiptera and Coleoptera)and ticks were found with prevalences of *** above 50%,compared to no infection in the insects collected from control *** in coccinellids were found as long as 277 days after ***,the effect on population level of non-target is still *** persistence of the fungus was documented by plating a soil suspension onto *** documented that conidia of *** could persist in the greenery plantation for at least 418 days after application.

关键词：高大冷杉温室微生物 Strophosoma象甲防治措施

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