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This article in AJ

  1. Vol. 51 No. 12, p. 725-726
     
    Published: Dec, 1959


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doi:10.2134/agronj1959.00021962005100120009x

Evapotranspiration in Relation to the Development of the Corn Crop1

  1. O. T. Denmead and
  2. R. H. Shaw

Synopsis

Synopsis

The corn crop in Iowa approaches the condition of a green crop, actively growing and completely shading the ground for a period of only 2 to 3 weeks during its growing season. In this period the ratio of evapotranspiration to open pan evaporation is 0.81. Before this period the ratio increases with increasing leaf area, and afterwards declines with declining physiological activity of the crop.

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