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Estimates of Cost and Optimum Plot Size and Shape for Measuring Yield and Chemical Characters in Soybeans 1
Author(s) -
Weber Charles R.,
Horner Theodore W.
Publication year - 1957
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1957.00021962004900080012x
Subject(s) - yield (engineering) , plot (graphics) , mathematics , replication (statistics) , agronomy , variable (mathematics) , statistics , biology , materials science , mathematical analysis , metallurgy
Synopsis Seed yield was 6 to 28 times more variable than chemical characters (oil, protein, iodine number). Use of incomplete block designs and other considerations justified long, narrow plots. Total cost (in hours) was 39.0% for obtaining yield and 61.0% for chemical attributes. Optimum plot size, apportioning cost among characters, was 3.2 times the basic unit ( 8 × 2 feet). Yield required 33, 50 and 700 times more replication than oil, protein and iodine number for comparable precision.