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American Potato Journal

, Volume 44, Issue 10, pp 347–354 | Cite as

Effect of simulated hail damage on yield and quality of potatoes

  • B. C. Beresford
Article

Summary

A three-year study was conducted to determine the effects on Red Pontiac potatoes of simulated hail damage applied at three stages of growth.

Both total yields and yields of U.S. #1 size tubers decreased, progressively as the degree of hail damage increased from 25% to 100% defoliation. Twenty-five per cent hail damage reduced total yields by 10% whereas 100% defoliation reduced yields 56% on the average.

Stage of growth when hail damage occurred also affected yield reduction. Damage applied when 50% of the plants were past full bloom caused more serious yield reductions than hail damage to plants in full bloom or plants beginning to flower.

Lowest yields occurred when 50% of the plants were past full bloom stage and when completely defoliated, and least yield reduction occurred when plants at 50% bloom were only 25% defoliated.

Specific gravity of tubers was decreased only by the most severe hail damage applied to the oldest potato vines.

As the degree of damage from simulated hail was increased the percentages of smaller sized tubers increased and the percentages of larger sized tubers decreased. Thus, hail damage not only decreased total yields but decreased the percentages of potatoes of U.S. #1 size.

The results of this study show that the Red Pontiac potato variety has a tremendous capacity to recover from hail damage. When 50% of the plants were in bloom, simulated hail damage to the extent of 25% defoliation did not significantly affect yields and 50% defoliation at this stage caused only slight yield reduction. However, either more complete defoliation at this stage or only partial defoliation at later stages of growth prevented the plants from producing normal yields.

Keywords

Specific Gravity AMERICAN Potato Journal Yield Reduction Full Bloom Potato Vine 
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.

Resumen

Un estudio tres años fué conducido en, los efectos del daño simulado del granizo aplicado por tres grados de crecimiento a la variedad de la papa Red Pontiac. El total de las producciones y las producciones de los tubércolos de Los Estados Unidos No. 1 fueron reducidas por el daño simulado del granizo. La magnitud de la pérdida de la producción dependió de la severidad del daño simulado aplicado, y el grado de crecimiento cuando las plantas fueron dañadas. En general, cuanto más tarde el daño fué aplicado y cuanto más grande fué la severidad del daño, tanto más grande fué la pérdida en producción. La cualidad, como medida por peso específico del tubércolo, no varió entre procedimientos (grado del daño) pero fué menor cuando el daño de granizo ocurió al fin de la estación. Hubo un incremento de los tubércolos de las clases más pequeñas, y una disminución de los tubércolos de la medida más grande cuando el daño simulado del granizo fué demorado y cuando la severidad del daño se aumentó. La variedad Red Pontiac tenía una capacidad en recobrarse del daño simulado del granizo de grados variables en severidad aplicada desde el tiempo de plantar el tubércolo hasta 50% despues del grado de florecimiento.

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Literature Cited

  1. 1.
    Murphy, J. J. and M. J. Goven. 1962. The effect of simulated hail damage on yield and quality of potatoes in Maine. Maine Agr. Expt. Sta. Bull. 607.Google Scholar
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    Snyder, G. B. and L. F. Michelson. 1959. The effects of simulated hail damage on potatoes. Massachusetts Agr. Expt. Sta. Bull. 506A.Google Scholar
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    Sparks, W. C. and G. W. Woodbury. 1959. Stages of potato plant growth—a guide in estimating losses from defoliation. Idaho Agr. Expt. Sta. Bull. 309.Google Scholar
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    Sparks, W. C., G. W. Woodbury and F. H. Takatori. 1957. Estimating hail injury in potatoes. Idaho Agr. Expt. Sta. Bull. 274.Google Scholar
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    Takatori, F. H., W. C. Sparks and G. W. Woodbury. 1952. A study of simulated hail injury on potatoes. Idaho Agr. Expt. Sta. Bull. 22.Google Scholar

Copyright information

© Springer 1967

Authors and Affiliations

  • B. C. Beresford
    • 1
  1. 1.University of MinnesotaNorthwest Experiment StationCrookston

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