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首页> 外文期刊>Pest Management Science >In vitro effects of flutriafol and azoxystrobin on Beauvaria bassiana and its efficacy against Tetranychus urticae
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In vitro effects of flutriafol and azoxystrobin on Beauvaria bassiana and its efficacy against Tetranychus urticae

机译：氟替莫泊和嘧菌酯对球孢白僵菌的体外作用及其对荨麻疹的防治作用

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BACKGROUND: Testing the compatibility of chemical pesticides and fungal biocontrol agents is necessary if these two agents are to be applied together in the integrated management of plant pests and diseases. In this study, the fungicides azoxystrobin (a strobilurin) and flutriafol (a triazole) were tested in vitro for their effects on germination of conidia and mycelial growth of Beauveria bassiana (Bals.) Vuill. and in bioassay for their effect on fungal activity against Tetranychus urticae Koch. The fungicides were tested at three different concentrations [recommended rate for field use (1 x X) and the dilutions 10~(-1) x X and 10~(-2) x X]. RESULTS: Flutriafol inhibited growth of mycelia and germination of the fungal conidia at all concentrations tested in vitro, and also reduced the efficacy of B. bassiana in bioassays against mites. The inhibitive effect of azoxystrobin in vitro varied with the concentration applied. A significant effect was observed at 1 x X and 10~(-1) x X concentrations on both the germination of conidia and mycelia growth. At 10~(-2) x X concentration, azoxystrobin showed little effect on B. bassiana. However, when this fungicide was tested in bioassays, none of the concentrations reduced 6. bassiana activity against mites. CONCLUSION: Azoxystrobin was most compatible with B. bassiana, while flutriafol was the most harmful. Further studies are required to confirm the negative effect of flutriafol on B. bassiana activity.
机译：背景：如果要将这两种药剂一起用于植物病虫害的综合治理，则必须测试化学农药和真菌生物防治剂的相容性。在这项研究中，在体外测试了杀菌剂天冬酰胺（strobilururin）和氟三酚（三唑）对球孢白僵菌（Balveria bassiana（Bals。）Vuill）孢子萌发和菌丝生长的影响。以及在生物测定中对它们对真菌的危害。测试了三种不同浓度的杀菌剂[推荐的田间使用率（1 x X）和稀释度10〜（-1）x X和10〜（-2）x X]。结果：在所有体外测试浓度下，氟替莫非都能抑制菌丝体的生长和真菌分生孢子的萌发，并且降低了球孢杆菌在针对螨的生物测定中的功效。嘧菌酯在体外的抑制作用随所施加的浓度而变化。浓度为1 x X和10〜（-1）x X时，对分生孢子萌发和菌丝体生长均具有显着影响。在10〜（-2）x X浓度下，嘧菌酯对球孢杆菌的影响很小。但是，当在生物测定法中测试这种杀菌剂时，没有一种浓度降低了6.球茎对螨的活性。结论：Azoxystrobin与B. bassiana最相容，而flutriafol最有害。需要进一步的研究以确认氟尿酚对球孢杆菌活性的负面影响。

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