Survey, surveillance and cultural characteristics of Alternaria leaf blight of cotton
Keywords:
Survey, Alternaria leaf blight, CottonAbstract
The roving survey undertaken in four districts viz., Parbhani, Nanded, Osmanabad, and Beed of Marathwada region revealed that average Alternaria blight incidence was ranged from 14.60 to 30.03 per cent. Bt. Cotton crop grow in the district of Nanded was found to be affected more with Alternaria blight (overall incidence 30.03%), followed by the district of Parbhani (25.20%), Beed (21.06%) and Osmanabad (14.60%). In Nanded district, maximum disease incidence (32.60%) was recorded in Degloor tahsil and this was followed by Naigaon tahsil (30.00%) and Nanded tahsil (27.50%). Results revealed that all the 11 culture media tested encouraged better growth of A. macrospora. However, potato dextrose agar gave significantly highest radial mycelial growth of 88.18 mm. The second and third best culture media found were Czapek’s dox agar (81.28 mm) and Richards agar (79.75 mm). Ashby’s manitol agar was found least suitable for the growth of test pathogen (39.92 mm).References
Anonymous, 2010. Cotton advisory board, Ministry of Agriculture, Government of India.
Anonymous, 2010. Cotton advisory board, Ministry of Agriculture, Government of India.
Chauhan, M.S., Yadav, J.P.S., Benniwal, J., 1997. Field resistance of cotton to Myrothecium leaf spot and Alternaria leaf spot (A.macrospora) diseases. J.Cotton Res.Dev.11,196-205.
Deshpande, G.D., 1973. Studies on leaf spot of cotton (Gossypium hirustum) caused by Alternari macrospora Zimm. Thesis submitted to Marathwada Agricultural University, Parbhani.
Fencelli, M.I., Kimati, H., 1990. Influence of culture media and fluorescent light on the sporulation of Alternaria dauci. Phytopathologica. 16, 248-252.
Lee, L., Yang, Y., 1941. Stem blight of cotton caused by Alternaria macrospora. Phytopath. 31, 864-871.
Mayee, C.D., Mukewar, P.A., 2007. Loss-inducing diseases of cotton and their management.In: Cotton in Andhra Pradesh (eds:Rao,NGP,Appa Rao and Siddique E.A. ).Farm and Rural Science Foundation and ANGRAU,Hydrabad.pp.348.
Mazzonetto, F., Menten, J.O.M., Paradela, A.L., Galli, M.A., 1996. Effect of culture media on mycelial growth and conidial production of Alternaria spp. in beans. Ecossistema. 21, 59-61.
More, K.G., Dhoke, P.K., Deosarkar, D.B., Bhatade, S.S., Patil, D.V., Gaikwad, A.R., 2010. Present status of cotton diseases in Marathwada region.J. Cotton Res. Dev.24(1) 106-107.
Mukewar, P.M., 1993. Present status of seed borne diseases of cotton in India and the application of seed treatments. Seed Res. Sci. 1 (6), 586-594.
Naik, B.M., Sabal-para, A.N., solanky, K.U., Patel, S.J., 2008. Evaluation of media for the growth and Sporulation of Alternaria tenuissina, the incitant of India Bean leaf spot. J.Pl.Dis.3(1),103-104.
Pria, M.D., Bergamin-Filho, A., Amorim, L., 1997. Evaluation of diffferent culture media for sporulation of Colletotrichum lindemuthianum, Phaesoisariopsis griseola and Alternaria spp. Summa Phytopathologica. 23, 181-183.
Ramegowda, G., Naik, M.K., 2008. Morphological, cultural and physiological diversity in isolates of Alternaria spp. infecting Bt. cotton. J.Mycol.Pl.Pathol.38(2),267-271.
Zimmermann, A., 1904. Berchte uberland u forstwirtschaft Von Deutsch Ostafrika, Bd-ii. PP, 24-5.
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Copyright (c) 2013 G. P. Jagtap, S. M. Jogdand, D. Utpal
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