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Agronomy Journal Abstract -

Grain Sorghum Yields in One-Row and Two-Row Plots1


This article in AJ

  1. Vol. 65 No. 3, p. 355-356
    Received: Mar 20, 1972

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  1. W. M. Ross2



Four combine grain sorghum hybrids, Sorghum bicolor (L.) Moench, were yield tested for 5 years in west central Kansas in one-row and in two-row plots with each hybrid as a border to determine relative reliability of data from the two plot types. Though ranks of hybrids remained the same, regardless of plot type or border, yields of individual hybrids varied from −5 to +10% in single-row plots and from −2 to +5% in two-row plots depending on the border rows. In addition, a strongly competitive hybrid, like RS 610 yielded more when bordered by some other hybrid, and a weakly competitive hybrid, like RS 650, yielded less. Average differences were: RS 610 (1-row plots, 290 kg/ha), RS 610 (2-row, 100), RS 650 (l-row, −130), and RS 650 (2-row, −20).

Two-row plots, and sometimes multiple rows, are deemed desirable for refined experiments and for tests in areas where growing conditions may be suboptimum. One-row plots appear to be practical for routine programs involving high entry numbers, for increasing replications, or for testing at additional locations without enlarging total seed and land requirements.

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