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Abstract

 

This article in AJ

  1. Vol. 50 No. 5, p. 283-284
     
    Received: Nov 18, 1957


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doi:10.2134/agronj1958.00021962005000050016x

An Automatic Mechanism for Imposing Photoperiods in Greenhouse Research1

  1. B. L. Coffindaffer and
  2. O. J. Burger2

Synopsis

Synopsis

An automatically controlled canopy for regulating light and dark periods in greenhouse work was designed, installed, and operated successfully. This system effectively provided three photoperiods on the same bench covering a total area 5 by 30 feet in size.

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