Summary
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1.
First infection of rugose mosaic and leaf roll on potato has been observed generally by the last week of December until the second week of January, depending upon locality and variety.
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2.
Peak period of infection is generally from one to three weeks after initial infection which continues for about two weeks.
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3.
The percentage of infection of rugose mosaic varies from 0.14 to 14.5 per cent and that of leaf roll from 0.14 to 1.7 per cent depending upon locality and variety.
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4.
Losses in yield, due to the attack of rugose mosaic vary from 20.0 to 76.0 per cent, and that of leaf roll from 41.3 to 73.3 per cent.
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Literature Cited
Banerjee, S. N. and A. N. Basu. 1956. Preliminary studies on the epidemiology of the potato aphids in West Bengal. Beitrage zur Entomologie, Band 6, Nr. 5/6: 511–516.
Chattopadhyay, S. B. and C. R. Das. 1955. The occurrence of some virus diseases on agricultural crop plants in West Bengal. Bull. Bot. Soc. Bengal. 9: 42–45.
Khanna, M. L. and B. Ganguly. 1955. Loss in yield in Craig’s Defiance variety due to virus Y. Sci. and Cult. 19: 257–258.
Vasudeva, R. S. 1946. Virus diseases of potatoes in India.Masking of mosaic symptoms and yield in relation to mosaic. Indian Farming. 7: 170–173.
—, and R. N. Azad. 1952. Investigations on potato diseases and production of disease-free seed potato in India. Empire J. Exp. Agri. 20(80): 293–300.
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Chattopadhyay, S.B., Das, C.R. A survey of rugose mosaic and leaf roll virus diseases of potato in west bengal — in plains. American Potato Journal 36, 16–21 (1959). https://doi.org/10.1007/BF02877210
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DOI: https://doi.org/10.1007/BF02877210