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Diseases ofPan (Piper betle) in Sylhet, Assam

Part VII. Effects of some soil treatments on the incidence ofSclerotial wilt

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Proceedings / Indian Academy of Sciences

Summary and Conclusions

The results of the experiments carried out during the years 1940-46 to ascertain the effects of some soil treatments on the incidence of theSclerotial wilt ofpan due toS. rolfsii are presented.

It has been found possible to considerably reduce the percentage of mortality by deep ploughing and by the growing of other crops for a few years on the infested soil. Continuous cropping fot four years withulu grass, paddy or tobacco andmukhi completely controlled the disease.

Applications of organic manures, cowdung and composts appreciably reduced the percentage of death due to the parasite.

Turning under of green manures has also been found beneficial in suppressing the disease.

Applications of zinc sulphate, copper sulphate, ferrous sulphate, manganous sulphate and magnesium sulphate have been found ineffective in minimising or controlling the disease.

Of the fertilizers tried, ammonium sulphate alone or in combination with superphosphate or potassium chloride or both the latter was found effective in appreciably suppressing the disease. Superphosphate or potassium chloride when applied singly or in combination exerted less effect but kept the mortality always below that observed in the control plots.

None of the soil amendments tried exerted any influence.

It may be concluded from these studies that theSclerotial wilt ofpan as it occurs in Assam can be effectively controlled by deep ploughing, by green manuring, by the application of organic manures and fertilizers and by the growing of other crops in the infested fields for a few years.

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Authors and Affiliations

  1. Central Potato Research Institute, New Delhi

    S. Chowdhury

Authors
  1. S. Chowdhury
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Additional information

Communicated by Dr. R. P. Asthana,f.a.sc.

This work was carried out at the Plant Pathological Laboratory, Sylhet.

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Chowdhury, S. Diseases ofPan (Piper betle) in Sylhet, Assam. Proc. Indian Acad. Sci. 28, 227–239 (1948). https://doi.org/10.1007/BF03049960

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  • DOI: https://doi.org/10.1007/BF03049960

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