BIOMANAGEMENT OF SCENTED GERANIUM (Pelargonium graveolens L. Herit) WILT CAUSED BY Fusarium solani
KrishiKosh
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Title |
BIOMANAGEMENT OF SCENTED GERANIUM (Pelargonium graveolens L. Herit) WILT CAUSED BY Fusarium solani
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Creator |
T G, CHANDRAMOHANA
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Contributor |
T, T. NARENDRAPPA
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Subject |
hybrids, maize, genetics, dna, purity, polymorphism, sowing, genetic structures, planting, alleles
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Description |
Scented Geranium (Pelargonium graveolens L. Herit) a perennial aromatic crop is affected by a destructive fungus, Fusarium solani causing wilt disease. Survey for incidence of Fusarium wilt revealed that disease incidence ranged from 45 to 80 per cent with a maximum disease noticed at Sugandhavana, Division of Horticulture, GKVK, Bangalore and the least disease recorded in Hosakote, Bangalore, Pathogen was isolated from the wilt infected plants and was identified as Fusarium solani based on morphological and cultural characters. Indigenous biocontrol agents isolated from rhizosphere of scented geranium were identified as Trichoderma viride, Trichoderma harzianum and Pseudomonas fluorescens based on morphological and biochemical tests. In vitro evaluation of antagonists revealed that Trichoderma viride followed by Trichoderma harzianum inhibited the Fusarium solani by 85 per cent and 73 per cent respectively. Volatile/non-volatile substances and culture filtrates of T. viride inhibited F. solani spore germination significantly compared to other bioagents. Application of T. viride (native strain) + P. fluorescens (GKVK-2) @ 20g/sqm reduced the soil population of F. solani and wilt incidence significantly (9.25%) against 90.48 per cent in control besides, improving the plant height (89 cm), primary branches (11) and fresh herb yield (539.7 q/ha) compared to untreated control. |
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Date |
2016-10-25T15:02:29Z
2016-10-25T15:02:29Z 2014-07-21 |
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Type |
Thesis
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Identifier |
Th-10834
http://krishikosh.egranth.ac.in/handle/1/81886 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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