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This article in AJ

  1. Vol. 61 No. 3, p. 363-364
     
    Received: Aug 23, 1968
    Published: May, 1969


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doi:10.2134/agronj1969.00021962006100030007x

Effect of Planting Dates on the Incidence and Severity of Corn Virus Diseases1

  1. Armon J. Keaster2,
  2. M. S. Zuber3,
  3. M. L. Fairchild2 and
  4. P. J. Loesch3

Abstract

Abstract

A date-of-planting study was conducted in southeast Missouri near Portageville, for a 3-year period, to determine the effect of planting date on the incidence and severity of certain symptoms reported to be associated with maize dwarf mosaic or corn stunt. The study included 12 hybrids having varying degrees of tolerance to these diseases and differing in maturity. Throughout the 3-year period, the disease incidence or severity ratings increased with each delay in planting. In addition, differences among hybrids and the interactions of planting dates by hybrids were statistically significant.

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