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This article in AJ

  1. Vol. 56 No. 3, p. 253-259
     
    Received: July 11, 1963
    Published: May, 1964


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doi:10.2134/agronj1964.00021962005600030002x

Photosynthesis Under Field Conditions. VII. Radiant Energy Exchanges Within a Corn Crop Canopy and Implications in Water Use Efficiency1

  1. L. H. Allen,
  2. C. S. Yocum and
  3. E. R. Lemon2

Synopsis

Synopsis

Data are assembled giving sinks of shortwave radiation within a corn crop canopy. From these data, and from net radiation measurements obtained at 225-, 175-, 100-, and 20-cm. heights within a crop of corn 300 cm. high, net thermal radiation is calculated at those respective heights. Transmission data at those heights, using a Miller field light transmission photometer, indicate that shortwave transmission can be expressed as an exponential function of height as well as of cumulative leaf area index.

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