ICAR Research Data Repository for Knowledge Management
Studies on pomegranate wilt complex
KrishiKosh
View Archive Info| Field | Value | |
| Title |
Studies on pomegranate wilt complex
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| Creator |
Shreeshail.Sonyal
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| Contributor |
Arun.Sattaraddi
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| Subject |
Plant pathology
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| Description |
Pomegranate wilt complex is an important disease which results in complete wilting of plant. The severity of pomegranate wilt complex was more in Bellary district followed by Koppal, Gadag, Bijapur, Bagalkot and Raichur districts. During the period of survey new plant parasitic nematodes were found in Karnataka viz., Meloidogyne incognita, Helicotylencu dhystera, Xiphinema sp. Dorylamid PPN and rotylenchulus reniformis. The identity of the fungus was confirmed as Ceratocystis fimbriata Ell. and Halst. The fungus showed maximum growth on Potato Dextrose broth on 16th day after incubation at 25?1?C. Culture of C. fimbriata which exhibited diversity with respect to cultural characters like type of the growth, mycelia colour, pigmentation and perithecium production with maximum growth on Oat meal agar. The highest growth of the fungus was recorded at 30?C, and fungus was grown maximum at pH 7.5. The different days of incubation of culture filtrates of C. fimbriata differed in their action to inhibit the seed germination of sorghum seeds. Among the fungicides, bioagents and botanicals tested against the C. fimbriata, propiconazole, vitavax power, hexaconazole and tricycazole, T. harzianum, T. viride, and Zinger rhizome extract, were superior, in inhibiting the mycelia growth of the fungus under in vitro condition. However in the interaction study, the C. fimbriata + M.incognita showed less shoot and root length and shoot and root weight followed by fungal giant culture (C. fimbriata) compared to all other treatments. The bioefficacy of fungicides and bioagents which performed well in vitro were tested in vivo condition as well. Among them, propiconazole at 0.2 per cent ant difenconazole at 0.2 per cent concentration and T. harzianum + P. flourescens and neem cake were effective in reducing the per cent disease incidence of wilt complex. |
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| Date |
2016-11-09T18:04:49Z
2016-11-09T18:04:49Z 2010 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/84760
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| Format |
application/pdf
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| Publisher |
UAS, Dharwad
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