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Irrigation control system

  • US 4,567,563 A
  • Filed: 07/11/1983
  • Issued: 01/28/1986
  • Est. Priority Date: 12/30/1980
  • Status: Expired due to Fees
First Claim
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1. In irrigation control apparatus, the combination comprising(a) a mast having a lower portion adapted to be removably inserted into the earth, and an upper portion operatively connected with said lower portion and adapted to be deflected laterally when struck,(b) soil moisture sensing means to be inserted into the earth to controlled depth to sense moisture at said depth,(c) and data transmitting means on an upper portion of the mast and operatively connected with said sensing means for transmitting to a central station substantially continous measurement data corresponding to moisture levels continuously sensed by said (b) means at the location of the mast.

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