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This article in AJ

  1. Vol. 59 No. 4, p. 355-358
     
    Received: Feb 10, 1967
    Published: July, 1967


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doi:10.2134/agronj1967.00021962005900040020x

Influence of Season, Population, and Spacing on Axillary Bud Development of Sweet Corn1

  1. R. H. Andrews2

Synopsis

Synopsis

Early single-eared and late multiple-eared sweet corn hybrids were grown in a range of spacings, populations, and row widths over a 5-year period at the Arlington Experimental Farm. The plots on Waupun silt loam soil were at a high fertility level as recommended for production of 3,810 to 5,080 kilograms (150 to 200 bushels) of field corn per acre. Determinations were made of snapped weight in the husk, usable husked ear weight, number of usable ears, percent of usable ears, maturity and of barrenness and multiple earing on a usable and total ear basis, concern here being primarily with the last three measuremems.

Prolific Hybrid 2 was more responsive to season in production of weight of snapped corn in the husk. Hybrid 1 was more dependent upon plant population for production of number of usable ears while Hybrid 2 was able to compensate at low populations by producing more ears per plant. Percent of usable ears was markedly higher for both hybrids at all treatments in the drier year, indicating that rainfall had its greatest effect on activation of buds rather than on proportion of buds completing development. This effect was relatively greater for Hybrid 2. While barrenness was directly proportional to population, the single eared hybrid showed relatively more barrenness at the high population and under dry conditions. Population was of greater importance than row width in terms of response elicited for the measurements of these studies.

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