Efficacy of Prothioconazol 40% SC against Tomato Leaf Mould
WANG Bin;SUN Qin;WU Gong-xin;LAN Jie;ZHOU Hui-zhong;SI Nai-guo;State Key Laboratory of the Discovery and Development of Novel Pesticide;
[Aims] The study aims to confirm the efficacy of prothioconazole, a new triazole pesticide, against tomato leaf mould. [Methods] The indoor toxicity test on tomato leaf mould was assessed by the methods of flat growth restraint and one of formulations was studied against the disease in field. [Results] The results showed that prothioconazole 83% possessed good antibacterial effect against Fulvia fulva, better than difenoconazole 95%. The efficacy of prothioconazole 40% SC could control tomato leaf mould effectively at the concentration of 100(75.9%),200(85.1%), 400(88.4%), which was significantly higher than difenoconazole 10% WG at 100 mg/L(61.3%), flusilazole40% EC at 100 mg/L(41.5%) and thiophanate-methyl 70% WP at 800 mg/L(10.4%) in field trail. [Conclusions]Prothioconazol 40% SC possessed good efficacy against tomato leaf mould. It was safe to tomato growing, environment and non-target organisms at the test concentration, and siutable to control tomato leaf mould as a good alternative fungicide.