Irrigation systems

An installation for the controlled dosing of an irrigation flow with a herbicide particularly for detecting root growth into the outlets of an underground drip irrigation line, includes a sealed container and a slow release herbicide material wherein a portion of the flow is directed through the herbicide impregnated material so that herbicide is controllably released into the diverted flow, and the diverted flow is reintroduced into the irrigation flow.

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Claims

Referenced Cited
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Other references
  • Burton, et al., "A Controlled Release Herbicide Device for Multiple-Year Control of Roots at Waste Burial Sites," Journal of Controlled Release, 3:47-54 (1986). Burton et al., The Use of Controlled Release Herbicides in Waste Burial Sites in: T.J. Rosemand and S.Z. Mansdorf (Eds.), Controlled Release Delivery Systems, Marcel Dekker, New York, N.Y. (1983). Cardarelli, Nate, "Controlled Release Pesticides Formulations," CRC Press Inc., Chapter 4, 1976. Chang, V. et al., "Control of Ant Damage to Polyethylene Tubes Used in Drip Irrigation Systems in Hawaiian Sugarcane Fields," Entomology, 2:1686-1692 (1980). Cline, J.F. et al., Biobarriers Used in Shallow Burial Ground Stabilization, Nuclear Technology, 58:150-153 (1982). Cline, J.F. et al., Long-Term Biobarriers to Plant and Animal Intrusions of Uranium Tailing, Index and Chapter 2 of Sep. 1982 report to U.S. Dept. of Energy under Contract DE-AC06-76RLO 1830. Kenig et al., eds. "Preventing Dripper Clogging by use of Herbicides," Publication PB-86374 by the Israeli Center for Water Devices, Aug. 1974 (in Hebrew, with English translation). Netafim, "Underground Drip Irrigation for Grass," 1979 (in Hebrew, with English translation).
Patent History
Patent number: RE35857
Type: Grant
Filed: May 31, 1996
Date of Patent: Jul 21, 1998
Assignee: Hydroplan Engineering Ltd. (Tel-Aviv)
Inventor: Raphael Mehoudar (Tel Aviv)
Primary Examiner: John A. Ricci
Law Firm: Lyon & Lyon LLP
Application Number: 8/653,064