Toxicity Test of Ten Fungicides to Monilinia fructicola Causing Chinese Dwarf Cherry Brown Rot(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Toxicity Test of Ten Fungicides to Monilinia fructicola Causing Chinese Dwarf Cherry Brown Rot

Author(s):: ZHOU Fang; HAO Xiao-juan; CHENG Chao; WANG Mei-qin; LI Xin-feng; WANG Jian-ming; College of Agriculture，Shanxi Agricultural University，Taigu，Shanxi 030801

Keywords:: Chinese dwarf cherry brown rot; Monilinia fructicola; fungicide; toxicity

Abstract:: Taking ten fungicides as materials,Chinese dwarf cherry brown rot as research object,the toxicities of 10 fungicides to Monilinia fructicola were tested by using mycelia growth rate method and spore germination method.The effective fungicides for control of brown rot of Chinese dwarf cherry were screened in the laboratory.The results indicated that the effective concetration (EC₅₀) values of 430 g/L tebuconazole SC,24% fenbuconazole SC,10% difenoconazole WG,80% Carbendazim WP,70% thiophanate-methyl WP,500 g/L iprodione SC,50% procymidone WP were less than 0.700 mg/L.430 g/L tebuconazole SC showed the strongest toxicity to mycelia growth with the minimum EC₅₀ of 0.027 mg/L among 10 fungicides，while 80% mancozeb WP showed the lowest toxicity with the EC₅₀ of 57.645 mg/L.The EC₅₀ values of 10 fungicides on spore germination were less than 2.500 mg/L.500 g/L iprodione SC showed the highest toxicity and its EC₅₀ value was 0.024 mg/L.80% mancozeb WP showed the lowest toxicity and its EC₅₀ value was 2.496 mg/L.24% fenbuconazole SC,430 g/L tebuconazole SC and 500 g/L iprodione SC could be used for control of brown rot of Chinese dwarf cherry.

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Last Update: 2014-08-10