Evaluation of fungicides for the control of Peronospora belbahrii on sweet basil in New Jersey

Kathryn Homa, P. William, Daniel Ward, Andrew Wyenandt, E. James

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Basil downy mildew (BDM), caused by the fungus-like oomycetepathogen Peronospora belbahrii, has become a destructive disease of sweet basil (Ocimum basilicum). Without proper management, BDM can cause complete crop loss. Currently, there are no commercially available sweet basil cultivars with genetic resistance to BDM. Because BDM is a relatively new disease of basil in the United States, there are few currently registered conventional or organic fungicides labeled for its control. Fungicide efficacy trials were conducted in 2010 and 2011 at Rutgers Agricultural Research and Extension Center in Bridgeton, NJ. During both years, seven biological fungicide treatments were field evaluated, including hydrogen dioxide; extract of Reynoutria sachalinensis; Bacillus pumilus strain QST 2808; a mixture of rosemary oil, clove oil, and thyme oil; mono- and dipotassium salts of phosphorous acid; sesame oil; copper hydroxide; and a combination of sesame oil + cupric hydroxide. Six conventional fungicides evaluated included mandipropamid, fluopicolide, propamocarb hydrochloride, cyazofamid, azoxystrobin, and fenamidone. In both years, monoand dipotassium salts of phosphorous acid provided the best control. Moderate disease suppression was provided by mandipropamid, cyazofamid, and fluopicolide compared with the control in 2010 and mandipropamid, cyazofamid, and copper hydroxide compared with the control in 2011.

Original languageEnglish (US)
Pages (from-to)1561-1566
Number of pages6
JournalPlant Disease
Volume98
Issue number11
DOIs
StatePublished - May 8 2014

Fingerprint

Peronospora
Ocimum basilicum
basil
cyazofamid
downy mildew
fungicides
copper hydroxide
clove oil
phosphorous acid
sesame oil
Reynoutria sachalinensis
salts
Bacillus pumilus
thyme
crop losses
rosemary
genetic resistance
agricultural research
hydrogen
disease control

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Plant Science

Cite this

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title = "Evaluation of fungicides for the control of Peronospora belbahrii on sweet basil in New Jersey",
abstract = "Basil downy mildew (BDM), caused by the fungus-like oomycetepathogen Peronospora belbahrii, has become a destructive disease of sweet basil (Ocimum basilicum). Without proper management, BDM can cause complete crop loss. Currently, there are no commercially available sweet basil cultivars with genetic resistance to BDM. Because BDM is a relatively new disease of basil in the United States, there are few currently registered conventional or organic fungicides labeled for its control. Fungicide efficacy trials were conducted in 2010 and 2011 at Rutgers Agricultural Research and Extension Center in Bridgeton, NJ. During both years, seven biological fungicide treatments were field evaluated, including hydrogen dioxide; extract of Reynoutria sachalinensis; Bacillus pumilus strain QST 2808; a mixture of rosemary oil, clove oil, and thyme oil; mono- and dipotassium salts of phosphorous acid; sesame oil; copper hydroxide; and a combination of sesame oil + cupric hydroxide. Six conventional fungicides evaluated included mandipropamid, fluopicolide, propamocarb hydrochloride, cyazofamid, azoxystrobin, and fenamidone. In both years, monoand dipotassium salts of phosphorous acid provided the best control. Moderate disease suppression was provided by mandipropamid, cyazofamid, and fluopicolide compared with the control in 2010 and mandipropamid, cyazofamid, and copper hydroxide compared with the control in 2011.",
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Evaluation of fungicides for the control of Peronospora belbahrii on sweet basil in New Jersey. / Homa, Kathryn; William, P.; Ward, Daniel; Wyenandt, Andrew; James, E.

In: Plant Disease, Vol. 98, No. 11, 08.05.2014, p. 1561-1566.

Research output: Contribution to journalArticle

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