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Publication
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| Title of Article |
Biological Control of Alternaria Leaf Spot Caused by
Alternaria spp. in Jerusalem Artichoke (Helianthus
tuberosus L.) under Two Fertilization Regimes |
| Date of Acceptance |
28 October 2019 |
| Journal |
| Title of Journal |
Plants |
| Standard |
ISI |
| Institute of Journal |
Licensee MDPI, Basel, Switzerland |
| ISBN/ISSN |
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| Volume |
2019 |
| Issue |
8 |
| Month |
November |
| Year of Publication |
2019 |
| Page |
463 |
| Abstract |
The objectives of this study were to evaluate the ecacy of integrating resistant genotypes
of Jerusalem artichoke with Trichoderma harzianum isolate T9 to control Alternaria leaf spot caused by
Alternaria spp. under two fertilization regimes and to determine whether T9 application induced
chitinase and -1,3-glucanase activity in Jerusalem artichoke leaves. Six Jerusalem artichoke varieties
(resistant varieties JA15, JA86, and JA116 and susceptible varieties HEL246, HEL293, and JA109)
and three disease control methods (a non-inoculated control, application of T. harzianum T9, and
fungicide sprays (propiconazole at a rate of 30 mL/20 L of water, 375 ppm)) was conducted in two
separate trials (di erent fertilization regimes) at the experimental farm of the Faculty of Agriculture,
Khon Kaen University, Khon Kaen, Thailand. Resistant genotypes controlled Alternaria leaf spot
e ectively. Application of Trichoderma showed low ecacy to control Alternaria leaf spot, but in
specific susceptible genotypes—HEL246 and HEL293—the application of Trichoderma could reduce
disease severity up to 10%. The application of Trichoderma was associated with a rise in production
of chitinase and -1,3-glucanase in HEL246 seedlings. The number of Trichoderma propagules in
soil, as well as the extent of colonization of roots and leaves, were monitored. The results indicated
that application of Trichoderma had higher propagules than non-inoculated control. Neither varietal
resistance nor the disease control methods used in this study impacted the yield or yield components
of Jerusalem artichoke. |
| Keyword |
Trichoderma harzianum; integrate control disease; enzyme activity |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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