Addendum to counting by weighing and the seed testing problem

    Authors

    D. M. Nickerson

    Comments

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    Abbreviated Journal Title

    Ann. Appl. Biol.

    Keywords

    sampling; estimation; Agriculture, Multidisciplinary

    Abstract

    The subject of counting by weighing as addressed in Ridout & Suntheralingam (1997) is revisited. When the coefficient of variation of the seed weights is known, we show how to modify the seed testing procedure in the aforementioned paper to account for the uncertainty introduced by obtaining a given number of seeds by weight, rather than exact counting. We find that counting by weighing requires a greater number of seeds per sub-sample than that required by the exact counting method of Ridout & Roberts (1997). Furthermore, the number of seeds per sub-sample increases with decreasing initial sample size used to estimate mean seed weight.

    Journal Title

    Annals of Applied Biology

    Volume

    143

    Issue/Number

    3

    Publication Date

    1-1-2003

    Document Type

    Article

    Language

    English

    First Page

    371

    Last Page

    374

    WOS Identifier

    WOS:000186901200014

    ISSN

    0003-4746

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