Control Effects and Economic Efficiency Evaluation of 10 Fungicides Controlling Potato Late Blight Disease
Liu Qiong-guang，Chen Hong，Luo Jian-jun，Quan Feng，Tang Chan-feng，Cao Xian-wei
College of Natural Resources and Environment South China Agricultural University，Guangzhou 510642；Huidong Technology Division in Guangdong province，Huidong，516329；College of Horticulture South China Agricultural University，Guangzhou 510642
Abstract：Ten fungicides, such as 72 % Cymoxanil mancozeb WP, 50 % Acrobat WP, 25 % Azoxystrobin SC, 64 % Oxadixyl mancozed WP, 68 % Metalaxyl-M WG, 70 % Propineb WP, 68.75 % Fluopicolide SC, 18.7 % Cabrio-team WG, 25 % Mandipropamid SC and 50 % Carbendazim WP were investigated for potato（Solanum tuberosum L.）late blight disease control effects in field. The results showed that 9 of them except 50 % Carbendazim WP had obviously control effects（over 90 %）on potato late blight disease and yield increasing role with the rate of 10.90 %-20.30 %. And the net income could be raised to 7 500-15 000 Yuan per hm2. According to the disease control and yield increasing effects, the fungicides used in Guangdong Province for controlling potato late blight better follow the following order; firstly 72 % Cymoxanil mancozeb WP and 50 % Acrobat WP, then 68 % Metalaxyl-M WG, 18.7 % Cabrio-team WG, 25 % Mandipropamid SC, 70 % Propineb WP and 64 % Oxadixyl mancozed WP, etc.
