Efficacy of Signum (Pyraclostrobin 6.7% + Boscalid 26.7%) in control of gray mold disease in pepper caused by Botrytis cinerea

Document Type : Research Paper

Authors

1 Associate Professor, Plant Diseases Research Department, Iranian Research Institute of Plant Protection, AREEO, Tehran, Iran,

2 Assistant Professor, Plant Protection Research Department, South Kerman Agricultural and Natural Resources Research and Education Center, AREEO, Jiroft, Iran.

3 Researcher, Plant Protection Research Department, Agricultural and Natural Resources Research Center of Hormozgan Province, AREEO, Bandar Abbas, Iran,

4 Plant Protection Research Department, Agricultural and Natural Resources Research Center of Tehran, AREEO, Varamin, Iran

Abstract

The gray mold disease caused by Botrytis cinerea is one of the most important diseases of pepper worldwide. In this research, the efficacy of Signum (pyraclostrobin 6.7% + boscalid 6.7%) on the control of pepper gray mold disease was evaluated under laboratory and greenhouse conditions compared with Captan fungicide. The research was carried out under laboratory condition as a completely randomized design and under greenhouse as a completely randomized block designs in the Hormozgan and the South of Kerman regions. The treatments included the concentrations of 1, 1.5 and 2g/L of the target fungicide, Captan 3g/L and control (without fungicide). Foliar spraying started once the symptoms of disease were observed and continued until the infection reached up 75% in the control treatment. It was repeated once every seven to 10 days and three times in total. The disease severity index was calculated using a scoring system and the results finally were compared. Under laboratory, results showed that all the treatments reduced the radial growth of the fungal pathogen compared to the control, and a significant difference was observed at the level of 1%. The results in greenhouse showed that the target fungicide Signum (pyraclostrobin + boscalid) at the concentrations of 2 g/L and 1.5 g/L was superior with average control efficiency of 93.8 and 88.25%, respectively. In order to reduce the use of fungicide, application of the fungicide at concentration of 1.5g/L and maximum three times with an interval of 7 to 10 days is recommended to control the gray mold disease of greenhouse pepper.

Keywords

References

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Journal of Applied Research in Plant Protection
Volume 13, Issue 4
2025
Pages 333-344

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History

  • Receive Date: 11 June 2024
  • Revise Date: 13 August 2024
  • Accept Date: 18 August 2024

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