Response of pearl millet downy mildew (Sclerospora graminicola) to diverse fungicides

S. A. Deepak, G. Chaluvaraju, P. Basavaraju, K. N. Amuthesh, H. Shekar Shetty, G. Oros

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4 Citations (Scopus)

Abstract

The inhibitory effect of 15 commercial and five experimental fungicides was assessed both in greenhouse and field experiments against Sclerospora graminicola, the causative agent of pearl millet downy mildew disease. Chemicals differed in anti-mildew activity. However, neither the pathogen nor the host plant was completely tolerant to any compounds tested. The plants depressed by fungicides in the germling stage recovered until formation of inflorescence, so this activity did not significantly influence grain yield. There was a significant correlation between antisporulant activity of compounds evaluated on detached leaf segments and their positive effect on yield performance. All compounds increased the grain yield of downy mildewed pearl millet when applied in the maximum doses tolerated by pearl millet. However, analysis of the cost-return budget showed that disease control < 30% is uneconomic. Fungicides of the acylanilide series exhibited the highest protective effect (over 95%) and andoprim, drazoxolon and efosit were also effective.

Original languageEnglish
Pages (from-to)7-16
Number of pages10
JournalInternational Journal of Pest Management
Volume51
Issue number1
DOIs
Publication statusPublished - Jan 1 2005

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Keywords

  • Disease management
  • Downy mildew
  • Fungicide screening
  • Pearl millet
  • Sclerospora

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Insect Science

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