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Transportation behaviour of fluopicolide and its control effect against Phytophthora capsici in greenhouse tomatoes after soil application
Author(s) -
Jiang Lili,
Wang Hongyan,
Xu Hui,
Qiao Kang,
Xia Xiaoming,
Wang Kaiyun
Publication year - 2015
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.3879
Subject(s) - phytophthora capsici , fungicide , agronomy , phytophthora , greenhouse , horticulture , environmental science , biology
BACKGROUND Fluopicolide, a novel benzamide fungicide, was registered for control of oomycete pathogens, including Phytophthora capsici . In this study, fluopicolide (5% SC ) was applied in soil at rates of 1.5, 3 and 6 L ha −1 [the normal ( ND ), double ( DD ) and quadruple dosages ( QD ) respectively] to investigate its transportation behaviour and control efficiency on tomato blight as a soil treatment agent. RESULTS The results showed that fluopicolide applied to soil could be absorbed by tomato roots and then transplanted to stems and leaves. It could exist in tomato roots for more than 30 days, and in leaves and stems until day 20 after application. The decline in fluopicolide in soil was in accordance with a first‐order dynamics equation, with half‐lives of 5.33, 4.75 and 5.42 days for the ND , DD and QD treatments respectively. The control efficiencies of fluopicolide were better with soil application than with spraying application, and the inhibition ratios were 93.02, 97.67 and 100 on day 21 for the ND , DD and QD treatments respectively. CONCLUSION Soil application of fluopicolide could control P. capsici in greenhouse tomatoes with high efficiency and long persistence. © 2014 Society of Chemical Industry