|Table of Contents|

Study on Toxicity and Effectiveness of Different Pesticides Against on Grape Downy Mildew

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年17
Page:
50-55
Research Field:
Publishing date:

Info

Title:
Study on Toxicity and Effectiveness of Different Pesticides Against on Grape Downy Mildew
Author(s):
DONG Huafang1XU Yanbo2SONG Limou1DONG Xinglong1HU Enmeng1LIU Yongbi1
(1.Xichang College,School of Agricultural Sciences,Xichang,Sichuan 615013;2.Department of Plant Pathology,China Agricultural University,Beijing 100094)
Keywords:
grape downy mildewfungicidestoxicity determinationfield efficacy
PACS:
-
DOI:
10.11937/bfyy.20184092
Abstract:
The field effects of 12 fungicides and 4 plant fluids on grape frosting mildew were compared to better protect against grape downy mildew and the toxicity of 6 kinds of fungicides was determined.The results showed that different fungicides had different inhibitory effects on grape downy mildew.These 6 fungicides′ EC50 against pathogen mycelium growth were 85% bordeaux mixture metalaxyl(0.442 2 mg?L-1)<18.7% dimethomorph pyraclostrobin (0.711 9 mg?L-1)<57% dimethomorph propineb (0.778 9 mg?L-1)<72%cymoxanil mancozeb(1.608 9 mg?L-1)<50% dimethomorph (2.381 1 mg?L-1)<80% thiram (15.619 0 mg?L-1).The field efficacy of 60% pyraclostrobin carbatene,57% dimethomorph propineb,68%Metalaxyl-M mancozeb,72% metalaxyl mancozeb,18.7%dimethomorph pyraclostrobin,2% chili liquid was better and longer duration than the other.The 6 fungicides′ field efficacy were over 60%.The 1 000 times liquid of 72.2% propamocarb hydrochloride′s field efficacy was 100%,which was the best.The field efficacy of 50% dimethomorph and 23.4% mandipropamid was poor and was not recommended.

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Last Update: 2019-09-24