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Potato spraying and potato scab

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Conclusions

For the past two years marked reduction in the percentages of potato scab have been obtained in certain fields by spraying potatoes with bordeaux mixture.

Several ways in which spraying might cause such results are suggested. The delay in tuber-setting and enlargement caused by spraying, might throw these phenomena into a period when higher soil moisture prevails, thus reducing the amount of infection. Tubers from sprayed plants have a higher total nitrogen and copper content, either of which may have some influence on infection. Reduction in the population of flea-beetles may reduce inoculation. Sprayed plants wilt more in hot weather and this may bring about changes which make the tubers more scab-resistant.

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Authors and Affiliations

  1. Cornell Univresity, Ithaca, N. Y.

    E. O. Mader & F. M. Blodgett

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  1. E. O. Mader
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  2. F. M. Blodgett
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Mader, E.O., Blodgett, F.M. Potato spraying and potato scab. American Potato Journal 12, 137–142 (1935). https://doi.org/10.1007/BF02880165

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  • DOI: https://doi.org/10.1007/BF02880165

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