Evaluation of fungicides in control of spot-type net blotch on barley

Authors

Kithsiri Jayasena, Department of Agriculture and Food, Western AustraliaFollow
Rob Loughman, Department of Agriculture and Food, Western AustraliaFollow
John Majewski, Department of Agriculture and Food

Document Type

Article

Publication Date

1-30-2002

Journal Title

Crop Protection

ISSN

0261-2194

Keywords

Barley, Drechslera teres f. maculata, Fungicides

Disciplines

Agronomy and Crop Sciences | Biosecurity

Abstract

Ten fungicides (pyraclostrobin, tebuconazole, flutriafol, epoxiconazole, propiconazole, triadimefon, azoxystrobin, trifloxystrobin, difenoconazole and a mixture of propiconazole with iprodione) were evaluated as single applications for control of spot-type net blotch of barley caused by Drechslera teres f. maculata at three locations during 1999 and 2000. Under moderate disease severity, yield losses ranged from 17–19 per cent depending on location and under high disease severity, yield losses reached 32 per cent. Pyraclostrobin, propiconazole and a mixture of propiconazole with iprodione were the most effective in controlling disease, improving yield and grain quality. These fungicides show most promise as commercial treatments when yield and quality are taken into account. Azoxystrobin, trifloxystrobin, difenoconazole and epoxiconazole also provided disease control.

Recommended Citation

Jayasena, K, Loughman, R, and Majewski, J. (2002), Evaluation of fungicides in control of spot-type net blotch on barley. Crop Protection, 21 (1), 63-69.
https://library.dpird.wa.gov.au/bs_research/82