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Studies on Comparative Efficacy of Commercially Available Talc Formulations of Trichoderma spp. and Fungicide against Root Rot of Chilli (Capsicum annuum L.)
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Rhizoctonia solani causing ischolar_main and stem rot in young transplanted plants is a major soil borne pathogen of chilli (Capsicum annuum L.). Poor growth of affected plants, yellowing and drying of foliage accompanied with partially or fully damaged ischolar_main system are major symptoms of the disease. Studies were carried out to evaluate efficacy of soil application of ten commercially available formulations of Trichoderma harzianum and T. viride, under laboratory and field conditions for efficacy in suppressing Rhizoctonia ischolar_main rot and promoting plant growth in chilli. Soil drenching by carbendazim 75 per cent WP (0.2%) was also taken as standard chemical check. Except BF 10 and BF 5 all the formulations which were tested in the field experiment were effective in reducing Rhizoctonia rot incidence in chilli as compared to control. However, disease incidence was least (12%) for the BF4. Reduction in disease incidence in this treatment was comparable to soil drenching by carbendazim (12%). Among other treatments BF3 was second most effective bioagent against Rhizoctonia ischolar_main rot All the bioagents promoted plant growth in terms of plant height, ischolar_main length, shoot dry weight and ischolar_main dry weight. Maximum shoot dry weight was recorded for BF4 (60.5 g) followed by BF3 (60.00 g), BF6 (56.5 g) and BF2 (55.6 g). Similar trend of ischolar_main dry weight was recorded. Highest rhizosphere soil population was recorded in case of bioagent formulation BF4 (4.1x106 cfu/g soil) followed by BF3 (3.8x106 cfu/g soil) and BF6 (3.4x106 cfu/g soil).
Keywords
Chilli, Biological Control, Rhizoctonia solani, Plant Growth.
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- Arora, D.K., Alander, R.P. and Mukerji, K.G. (1992). Handbook of applied mycology. Fungal Biotechnology, 4, Marcel Dekker, NEWYORK, U.S.A.
- Bell, D.K., Wells, H.D. and Markhan, C.R. (1982). In vitro antagonism of Trichoderma spp. against six fungal pathogens. Phytopathology, 72 : 379-382.
- Bunker, R.N. and Mathur, K. (2001). Antagonism of local biocontrol agents to Rhizoctonia solani inciting dry ischolar_main rot of chilli. J. Mycol. Pl. Pathol., 31: 50-52.
- Dennis, C. and Webster, J. (1971). Antagonistic properties of Trichoderma species. Trans. Br. Mycol. Soc., 57: 363-365.
- Gurha, S.N. (2001). Effect of some Trichoderma spp. on the growth of different isolates of Fusarium oxysporum f.sp. ciceri in vitro. Ann. Pl. Protec. Sci., 9(2): 332-334.
- Harman, G.E. and Bjorjmann, T. (1998). Potential and existing use of Trichoderma and Gliocladium for plant disease control and plant growth enhancement. In: G.E. Harman and C.P. Kubicek (Eds.), Trichoderma and Gliocladium. Enzymes, Biological control and Commercial Applications,2 : 229-265.Taylor & Francis Ltd, LONDON, UNITED KINGDOM,
- Harman, G.E. (2006). Overview of mechanisms and uses of Trichoderma spp. Phytopathology, 96 : 190-194.
- Khan, J., Ooka, J.J., miller, S.A., Madden, L.V. and Hoitink, H.A.J. (2004). Systemic resistance induced by Trichoderma hamatum 382 in cucumber against Phytophthora crown rot and leaf blight. Pl. Dis., 88 : 280-286.
- Khan, M.R. and Gupta, J. (1998). Antagonistic effects of Trichoderma species against Macrophomina phaseolina on eggplant. J. Pl. Dis. & Protec., 105: 387-393.
- Krownland, W.C. and Stanghellini, M.E. (1988). Clean slide technique for the observation of anastomosis and nuclear condition of Rhizoctonia solani. Phytopathology, 78 : 820-828.
- Kumar, D. and Dubey, S.C. (2001). Management of collar rot of pea by the integration of biological and chemical methods. Indian Phytopath., 54: 62-66.
- Monte, E. (2001). Understanding Trichoderma: between biotechnology and microbial ecology. Internat. Microbiol., 4 : 1-4.
- Muhyi, R. and Bosland, P.W. (1992). Evalution of Capsicum germplasm for sources of resistance to Rhizoctonia sloani. Hort. Sci., 30: 341-342.
- Papavizas, G.C. (1985). Trichoderma and Gliocladium: Biology, ecology and potential for biocontrol. Ann. Rev. Phytopathol., 23 : 23-54.
- Satyaprasada, Kunwar, I.K. and Ramarao, P. (1998). Biological control of fusarial diseases. In: Integrated pest and disease management (Eds. R.K. Upadhyay, K.C. Mukherji, B.P. Chamola. O.P. Dubey). pp. 563-579. APH Publishing Corporation, Ansari Road, Darya Ganj, NEW DELHI, INDIA.
- Skaggs, R., Decker, M. and Vanleeuwen, D. (2000). A survey of southern new mexico chilli producers: Production practices and problems. NM Agric. Exp. Sta. Tech. Bull., 782.
- Tronsmo, A., Klemsdal, S.S., Hayes, C.K., Lorito, M. and Harman, G.E. (1993). The role of hydrolytic enzymes produced by Trichoderma harzianum in biological control of plant diseases, Trichoderma reesei cellulases and other hydrolases, Enzyme structures, Biochemistry, Genetics and Applications. In: P. Suominen and T. Reinikainen (Eds.), Foundation for Biotechnical and Industrial Fermentation Research Vol 8, Helsinki, Finland. pp. 159-168.
- Upadhyay, R.S. and Mukhopadhyay, A.N. (1983). Production of antibiotics and molecular mechanisms involved in the antagonistic action of Trichoderma harzianum against phytopathogenic fungi. Appl. Environ. Microbiol., 60: 4364-4370.
- Weller, D.M. (1988). Biological control of soil borne plant pathogens in the rhizosphers with bacteria. Ann. Rev. Phytopath., 26: 379-407.
- Whipps, J.M. and Lumsden, R.D. (2001). Commercial use of fungi as plant disease biological control agents: status and prospects, In: T. Butt, C. Jackson and N. Magan (Eds.), Fungal Biocontrol Agents: Progress, Problems and potential, CABI Publishing, Wallingford. pp. 9-22.
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