Study on Susceptibility of Different Resistance Type of Botrytis cinerea to Fungicides with Different Mechanism

The result of toxicity of different fungicides to different resistance type of Botrytis cinerea strains showed that, there were cross resistant in benzimidazoles (carbendazin, thiophanate methyl) and dicarboximides (procymidone, iprodione, dimetachlone), negative cross resistant between benzimidazoles and diethofencarb. Fludioxonil possess the highest toxicity (EC 50 200 mg/mL), fludioxonil, tebufenozide, flusilazol and propiconazol showed high activity in vivo test.