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This article in AJ

  1. Vol. 62 No. 3, p. 433-434
     
    Received: Oct 23, 1969
    Published: May, 1970


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doi:10.2134/agronj1970.00021962006200030039x

Coefficients for Computing Leaf Area in Type 41, Pennsylvania Broadleaf, Tobacco1

  1. Guy W. McKee and
  2. John O. Yocum2

Abstract

Abstract

Measurements of 765 leaves from five different varieties of Type 41, Pennsylvania broadleaf, tobacco indicated that varieties differed significantly in leaf shape. Leaf area per plant could be calculated to an accuracy of ± 1% by multiplying the accumulated sum of length by width of individual leaves by a coefficient of 0.64. For greater precision, coefficients of 0.66 for leaves of Pennleaf 1, 0.65 for leaves of Swarr-Hibshman, and 0.61 for leaves of Fennbel 69 should be used. Leaf area per plant could also be calculated with a lesser degree of precision (± 10%) by multiplying accumulated leaf length per plant by a coefficient of 21.45. For greater precision, specific varietal coefficients of 19.79 for Pennbel 69, 22.87 for Swarr-Hibshman, and 21.70 for Pennleaf 1 should be used.

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