Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis

Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis

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Effects of barley scald caused by Rhynchosporium secalis on grain yield were studied in three spring barley cultivars under field conditions using artificial inoculation over three years. The disease strongly reduced the green-leaf area duration compared with fungicide-treated leaves. At low infecti...

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Main Author: Reijo Karjalainen
Format: Article
Language:English
Published: Scientific Agricultural Society of Finland 1990-07-01
Series:Agricultural and Food Science
Online Access:https://journal.fi/afs/article/view/72388
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spelling doaj-d2d359ceaaf046929340b5f010c9122c2020-11-25T02:19:39ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18951990-07-01623Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalisReijo Karjalainen0Department of Plant Pathology, University of Helsinki, SF-00710 Helsinki, FinlandEffects of barley scald caused by Rhynchosporium secalis on grain yield were studied in three spring barley cultivars under field conditions using artificial inoculation over three years. The disease strongly reduced the green-leaf area duration compared with fungicide-treated leaves. At low infection level, R. secalis reduced the grain yield of barley by 3—5 %. Moderate and severe infection reduced the grain yields of susceptible cultivars by 10—12 %. Single-tiller analysis of yield components indicated that grain weight and ear weight were most affected, but the number of grains was only insignificantly reduced by the disease. Implications of these results for controlling scald disease in Finland are discussed.https://journal.fi/afs/article/view/72388
collection DOAJ
language English
format Article
sources DOAJ
author Reijo Karjalainen
spellingShingle Reijo Karjalainen
Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis
Agricultural and Food Science
author_facet Reijo Karjalainen
author_sort Reijo Karjalainen
title Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis
title_short Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis
title_full Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis
title_fullStr Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis
title_full_unstemmed Yield reduction of spring barley in relation to disease development caused by Rhynchosporium secalis
title_sort yield reduction of spring barley in relation to disease development caused by rhynchosporium secalis
publisher Scientific Agricultural Society of Finland
series Agricultural and Food Science
issn 1459-6067
1795-1895
publishDate 1990-07-01
description Effects of barley scald caused by Rhynchosporium secalis on grain yield were studied in three spring barley cultivars under field conditions using artificial inoculation over three years. The disease strongly reduced the green-leaf area duration compared with fungicide-treated leaves. At low infection level, R. secalis reduced the grain yield of barley by 3—5 %. Moderate and severe infection reduced the grain yields of susceptible cultivars by 10—12 %. Single-tiller analysis of yield components indicated that grain weight and ear weight were most affected, but the number of grains was only insignificantly reduced by the disease. Implications of these results for controlling scald disease in Finland are discussed.
url https://journal.fi/afs/article/view/72388
work_keys_str_mv AT reijokarjalainen yieldreductionofspringbarleyinrelationtodiseasedevelopmentcausedbyrhynchosporiumsecalis
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