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Suthin Raj, T.
- Evaluation of Virulence and Methods of Inoculation of Colletotrichum Capsici (SYD.) Butler and Bisby
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Affiliations
1 Department of Plant Pathology, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Chidambaram, T.N., IN
2 CAS in Marine Biology, Faculty of Marine Sciences, Annamalai University, Chidambaram, T.N., IN
1 Department of Plant Pathology, Faculty of Agriculture, Annamalai University, Annamalai Nagar, Chidambaram, T.N., IN
2 CAS in Marine Biology, Faculty of Marine Sciences, Annamalai University, Chidambaram, T.N., IN
Source
International Journal of Agricultural Sciences, Vol 9, No 2 (2013), Pagination: 802-805Abstract
The aim of this research was to study the four different methods of inoculation which were followed and one which makes chilli plants easily infected was identified and its virulence was evaluated. Among the methods of artificial inoculation, pinpricking + spore suspension spray was found to be the best in fruit and leaf infection. In fruits and leaves C.capsici was inoculated [pinpricking + spore suspension spray] recorded the mean per cent infection was 60 and 50 per cent, respectively and the isolate C.capsici (Cc1) was significantly the most virulent one which recorded the highest fruit rot intensity (69.6 PDI) and leaves infection (62.4 PDI). The incidence of infection on chilli leaves was found to be less when compared to that of its fruits.Keywords
Colletotrichum Capsici, Virulence, Chilli
- Bio Efficacy of Fungicides against Rice Sheath Blight Caused by Rhizoctonia solani Under in Vitro Condition
Abstract Views :383 |
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Authors
Affiliations
1 Department of Plant Pathology, Annamalai University, Chidambaram (T.N.), IN
2 Centre for Advance Studies in Marine Biology, Annamalai University, Chidambaram (T.N.), IN
1 Department of Plant Pathology, Annamalai University, Chidambaram (T.N.), IN
2 Centre for Advance Studies in Marine Biology, Annamalai University, Chidambaram (T.N.), IN
Source
International Journal of Plant Protection, Vol 9, No 2 (2016), Pagination: 615-618Abstract
Sheath blight caused by Rhizoctonia solani Kuhn [Thanatephorus cucumeris (Frank) Donk], occurs throughout the temperate and tropical rice growing regions. Rice sheath blight was considered as a minor disease in earlier days, but now it is regarded as an internationally important disease second only to rice blast. Use of fungicides with a broad spectrum of activity against more than one disease is common in rice. The foliar spray of fungicides is the single most effective method for the management of sheath blight disease. The bio efficacy of various fungicides like Carbendazim 50 per cent WP, Mancozeb 50 per cent WP, Benomyl 50 per cent WP, Copper oxychloride 50 per cent WP, Edifenphos 50 per cent EC, Iprobenphos 50 per cent EC and Hexaconazole 5 EC were used to test against the R. solani by Poisoned food technique and Mycelial dry weight is analyzed. All the tested fungicides registered appreciable inhibition in colony growth and mycelia dry weight. Among the eight fungicides, Hexaconazole 200 ppm and 400 ppm were completely inhibiting the mycelial growth of R. solani. Among the fungicides, Hexaconazole showed the highest level of inhibition and recorded 49.3 mg mean of mycelial dry weight. The result of the experiment revealed the superiority of Hexaconazole in the control of R. solani, hence the same was used for further studies.Keywords
Fungicides, Rhizoctonia solani, Antifungal Compounds, Rice.References
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