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Foliar application of urea to potatoes

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Conclusion

The results showed that foliar application of urea is an effective means of supplying part of the nitrogen for Katahdin potatoes under Connecticut conditions. Foliar applications of urea can be used as a means of supplying additional nitrogen, when the plants are too large to be side-dressed.

No adverse effects upon tuber quality such as hollow heart incidence or after-cooking darkening were found correlated with foliar applied nitrogen from urea.

Foliar applications of nitrogen applied late in the growing season may tend to retard maturity of the crop, and result in lower yields, and tubers of slightly lower specific gravity in the event of a shorter than normal growing season.

The results obtained under the conditions of these experiments indicate that the amount applied by foliar application should not be more than 30 to 45 pounds of nitrogen per acre in not more than 4 to 6 weekly sprays, with sufficient nitrogen provided at planting time to prevent nitrogen deficiency before all the nitrogen spray applications can be safely applied.

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Literature Cited

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Author notes

  1. E. Francis Button (Agronomist)

    Present address: Connecticut State Highway Dept., Portland, Conn.

Authors and Affiliations

  1. Storrs Agricultural Experiment Station, Storrs, Conn.

    Arthur Hawkins (Agronomist)

Authors
  1. E. Francis Button
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  2. Arthur Hawkins
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Additional information

Contribution from Agronomy Section of Storrs Agricultural Experiment Station, Storrs, Conn.

Formerly Research Assistant in Agronomy, University of Conn.

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Button, E.F., Hawkins, A. Foliar application of urea to potatoes. American Potato Journal 35, 559–572 (1958). https://doi.org/10.1007/BF02855052

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  • DOI: https://doi.org/10.1007/BF02855052

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