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AREA SOIL MOISTURE AND FERTILIZATION SENSOR

  • US 20130073097A1
  • Filed: 09/19/2011
  • Published: 03/21/2013
  • Est. Priority Date: 09/19/2011
  • Status: Abandoned Application
First Claim
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1. A method for simultaneously operating irrigation and fertilization control in an agricultural area comprising:

  • creating an electric field below the soil surface of said agriculture area to measure soil conductance value of said agricultural area;

    constantly measuring the soil conductance change during irrigation;

    stopping the irrigation when change in soil conductance is small and memorizing the instantaneous conductance value as a first reference value;

    starting the irrigation when the soil conductance falls below a predetermined fraction p of the said first reference value;

    measuring the soil conductance value when the soil is water and fertilizer saturated and storing the said conductance value as a second reference value;

    comparing the said first reference value with the said second reference value;

    starting the fertilization when the first reference value falls below a predetermined fraction q of the said second reference value.

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