Screening of Chemical Control for Potato Blight

• Published in: Plant Diseases and Pests(植物病虫害研究：英文版) Vol. 6; no. 2; pp. 16 - 18
• Main Authors: Chunyan, Chen, Chaohai, Wang, Yuzhang, Chen, Zhengjuan, Liang, Shengnan, Wang, Song, Wang
• Format: Journal Article
• Language: English
• Published: Cranston Wu Chu (USA-China) Science and Culture Media Corporation 01.04.2015
• Subjects: 代森锰锌; 化学防治; 单位面积产量; 控制效率; 枯萎病; 甲霜灵锰锌; 随机区组试验; 马铃薯晚疫病
• ISSN: 2152-3932

To screen chemicals for controlling potato blight effectively, randomized block experiment was adopted, the control efficiency of five chemicals for Carbendazim, Metalaxyl, Dithane mancozeb, Curzate, Cymoxanil mancozeb was explored. The results showed that the efficiency of Metalaxyl was much better than that of other conventional chemicals in controlling potato blight, up to 70.59% ; the mean control efficiency of Curzate and Cymoxanil mancozeb was 68.76% and 67.05% ; the control efficiency of Carbendazim was lower, 55.76%. Big and middle tuber rate, tuber weight per hole, plot yield, unit area yield of potatoes in Metalaxyl treatment were the highest, 78.05%, 437.24 g/hole, 34.0 kg/21.6 m2 and 15 748.61 kg/hm2, 49.12% higher than the control yield. The indexes of potatoes in Cymoxanil mancozeb treatment were the second highest, 73.33%, 385.31 g/hole, 32.8 kg/21.6 m2 and 15 192.78 kg/hm2, 43.86% higher than the control yield.