Published online 26 August 2005
Published in Crop Sci 45:1978-1984 (2005)
© 2005 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
Effect of Control Plot Density, Control Plot Arrangement, and Assumption of Random or Fixed Effects on Nonreplicated Experiments for Germplasm Screening Using Spatial Models
Boi Sebolaia,
J. F. Pedersenb,*,
D. B. Marxc and
D. L. Boykind
a Botswana College of Agriculture, Private Bag 0027, Gaborone Botswana
b USDA-ARS, NPA Wheat, Sorghum and Forage Research, 344 Keim Hall, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0937
c Dep. of Biometry, Univ. of Nebraska-Lincoln, Lincoln, NE 69583
d USDA, ARS, MSA, 141 Experiment Stn. Rd., Stoneville, MS 38776

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Fig. 1. Check plot arrangement A at a density of 20% in a 20 x 20 grid.
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Fig. 2. Check plot arrangement B at a density of 20% in a 20 x 20 grid.
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Fig. 3. Check plot arrangement C at a density of 20% in a 20 x 20 grid.
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Copyright © 2005 by the Crop Science Society of America.