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American Potato Journal

, Volume 41, Issue 11, pp 349–356 | Cite as

Field plot technique for the estimation of specific gravity of potatoes

  • D. A. Young
  • H. B. Cannon
Article

Summary

This study represents an attempt to devise suitable field plot techniques for the estimation of the specific gravity of poatoes. It was designed to study field plot techniques for estimating specific gravity as a varietal characteristic, but not to study techniques for determining specific gravity per se. Three components contributing to the variance of an estimated mean specific gravity were estimated. Standard errors and relative costs associated with the specific gravity estimates of a group of field plot designs were calculated. The investigation showed that the precision of a specific gravity estimate can be increased most readily by increasing the number of plots from which the sample is drawn. While it is recognized that the estimates of variance components, standard errors and cost functions are based on conditions at Fredericton and therefore may be different elsewhere, it can be expected that relationships between these factors would be similar. The main considerations may therefore serve as a model in setting up field plant techniques for the estimation of specific gravity of potato varieties grown under different conditions.

Keywords

Sampling Scheme Specific Gravity AMERICAN Potato Journal Relative Cost Field Plot 
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.

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Copyright information

© Springer 1964

Authors and Affiliations

  • D. A. Young
    • 1
  • H. B. Cannon
    • 2
  1. 1.Potato Breeding Section.Canada
  2. 2.Statistical Research Service, Research BranchCanada Department of AgricultureOttawa

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