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LED light timing in a high growth, high density, closed environment system

  • US 10,201,132 B2
  • Filed: 12/28/2016
  • Issued: 02/12/2019
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A method for accelerating growth of a seedling positioned in a nutrient solution in a growing system comprising the steps of:

  • observing a seedling to monitor growth of the seedling over a course of a plurality of plant maturity phases, wherein;

    a second plant maturity phase commences when growth is first observed in the seedling and terminates with a development of a full leaf or a bud relative to other leaves or buds in the seedling;

    a third plant maturity phase commences at an end of the second plant maturity phase and terminates when full plant maturity occurs in the plant as determined by the plant species; and

    a fourth plant maturity phase commences with reaching full maturity and terminates when the plant is ready to be harvested;

    calculating a number of hours for an LED grow light to remain on during a first portion of the second plant maturity phase by multiplying a first fraction by a recommended lighting cycle in hours for a given plant species;

    calculating a number of hours for the LED grow light to remain off during the first portion of the second plant maturity phase by subtracting the first fraction times the recommended lighting cycle from twenty-four hours;

    calculating a number of hours for the LED grow light to remain on during a second portion of the second plant maturity phase by multiplying a second fraction by the recommended lighting cycle in hours;

    calculating a number of hours for the LED grow light to remain off during the second portion of the second plant maturity phase by subtracting the second fraction times the recommended lighting cycle from twenty-four hours; and

    executing the on/off light cycles for the calculated durations in the growing system by controlling a grow light in accordance with the on/off light cycles to result in accelerated growth of the seedling.

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