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Agronomy Journal Abstract -

Design and Construction of a Rhizotron-Lysimeter Facility at the Ohio State University1


This article in AJ

  1. Vol. 74 No. 1, p. 152-156
    Received: Apr 10, 1981

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  1. K. J. Karnok and
  2. R. T. Kucharski2



A rhizotron-lysimeter was constructed at the Ohio State University in 1979. This entirely below ground-level facility consists of three main rooms: (1) An instrument room equipped with climatological and data acquisition instrumentation, (2) a water reservoir room used in the lysimeter portion of the facility, and (3) an observation area consisting of two rows of 15 observation-lysimeter cells (60 ✕ 60 ✕ 90 cm high.)

The lysimeter portion of the facility operates on a Mariotte supply system which allows evapotranspiration rates to be determined concurrently with root observations. When the Mariotte supply system is not in use, leachates can be drawn under vacuum from each cell. The rhizotron-lysimeter is initially being used to monitor the seasonal rooting responses and water use rates of several cool season turfgrasses.

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