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This article in AJ

  1. Vol. 58 No. 2, p. 173-175
    Received: Aug 2, 1965

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Effects of Years and Locations Stalk Strength in Corn(Zea mays L.)1

  1. M. S. Zuber and
  2. P. J. Loesch2



Negative correlations between crushing strength of mature corn stalks and field stalk lodging have been shown by several workers. The objective of the study reported here was to determine the relative effects of years and locations on stalk-crushing strength, rind thickness, and weight of 2-inch stalk sections. Twelve inbred lines representing a wide range in inherent stalk lodging performance were grown at two locations for a 3-year period. Data for the three stalk traits indicated a good agreement between locations within years while crushing strength and rind thickness varied more between years. Variation in crushing strength was attributed in part to pith destruction by stalk rots which are more prevalent in some seasons than in others. It was concluded that stalk quality data obtained in a single year at a single location would usually be adequate to screen a group of strains for inherent stalk lodging resistance. For greater precision data for more than one year and one location would be necessary. Crushing strength was affected more by different environments than the other two traits. The coefficients of variation for crushing strength ranged from 11.7 to 18.8%; rind thickness from 5.2 to 8.5%; and weight of 2-inch section from 8.7 to 13.0%.

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