American Potato Journal

, Volume 47, Issue 11, pp 435–443 | Cite as

Zinc experiments on potatoes in the San Luis Valley of Colorado

  • P. N. Soltanpour
  • J. O. Reuss
  • J. G. Walker
  • R. D. Heil
  • W. L. Lindsay
  • J. C. Hansen
  • A. J. Relyea


Seven field trials with Zn were carried out in 1965, 1966, and 1967 to determine source and placement effects of ZnEDTA (Zn ethylene-diaminetetraacetate) and ZnSO4 on the yield and composition of potatoes grown in the San Luis Valley of Colorado.

Application of Zn increased the yield of U.S. No. 1 potatoes from 16 to 95% on soils having less than 4.8 ppm of 0.1NHCI-extractable Zn. No yield response was obtained on soils having greater than 5.5 ppm of extractable Zn.

Uptake of Zn was greater from soil-applied ZnEDTA than from soilapplied ZnSO4. Banding ZnSO4 approximately 3 inches (7.6 cm) directly below the seed piece was more efficient than discing it or sidebanding it 5 inches (12.7 cm) to the side and 3 inches (7.6 cm) below the seed piece.

Two foliar sprays of either ZnSO4 or ZnEDTA solutions (0.5%) were also effective in correcting Zn deficiency.

Zinc content of the foliage was not a good indicator of the Zn nutrition of potato plants.


AMERICAN Potato Journal ZnSO4 Zinc Deficiency Seed Piece Foliar Spray 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Siete ensayos de campo con Zn se realizaron entre 1965, 1966 y 1967, para determinar origen y localizacion efectos de ZnEDTA (Zn ethylenediaminetetraacetate) y ZnSO4 en el redimiento y composición de la papa cultivada en el Valle de San Luis de Colorado.

Las aplicaciones de Zn aumentaron el rendimiento de papas U.S. No. 1, de 16 a 95%, en suelos que tenían menos de 4.8 ppm de 0.1N HCI- Zn extractable. Sin embargo, no se obtuvo ninguna respuesta en el rendimiento, cuando los suelos tenían mas que 5.5 ppm de Zn extractable. La asimilación de Zn fue mayor con las aplicaciones al suelo de ZnEDTa, que con las aplicaciones de ZnSO4. El ZnSO4 aplicado en bandas, aproximadamente a 3 pulgadas (7.6 cms) y directamente debajo de la semilla, se encontró más eficiente que aplicado alrededor o en bandas laterales a 5 pulgadas (12.7 cms.) y 3 pulgadas (7.6 cms.) debajo de la semilla.

Dos aspersiones foliares de ZnSO4 ó ZnEDTA en soluciones al 0.5%, también se encontraron efectivas para corregir la deficiencia de Zn. El contenido de Zn en el follaje de las plantas, no fue un buen indicador de la nutrición de este elemento.


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Copyright information

© Springer 1970

Authors and Affiliations

  • P. N. Soltanpour
  • J. O. Reuss
  • J. G. Walker
  • R. D. Heil
  • W. L. Lindsay
  • J. C. Hansen
  • A. J. Relyea

There are no affiliations available

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