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Field Plot Technique Comparison for Estimating Corn Grain and Dry Matter Yield
Author(s) -
Wolkowski R. P.,
Reisdorf T. A.,
Bundy L. G.
Publication year - 1988
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/agronj1988.00021962008000020026x
Subject(s) - dry matter , yield (engineering) , agronomy , mathematics , grain yield , field experiment , plant density , sowing , biology , materials science , metallurgy
Production recommendations are based on research data collected from small plots, with the assumption that experimental results are transferable to field‐scale conditions. Frequently, research techniques are selected to conserve resources and improve the efficiency of maintaining and harvesting the small‐plot experiments. This study evaluated the effects of plant density, plot length, alley size, and harvest method on corn ( Zea mays L. ) grain and dry matter yield. Grain and dry matter yield decreased as harvested length increased. Alleys (0.75 or 3.0 m wide) increased grain yield relative to plots without alleys, but had no effect on dry matter yield. Combine‐harvested grain yields were equal to or higher than yields obtained by hand harvesting and stationary shelling due to lower grain losses during shelling with the combine. A sample size of 10 to 15 plants per plot minimized the coefficient of deviation of corn dry matter yield determination.