Regulation of fruit set in peppers by dynamically adapting the led lighting spectrum
AssigneeSignify Holding B.V.
InventorMarcellinus Petrus Carolus Michael Krijn
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Abstract
The disclosure provides a system for cultivating a pepper plant, wherein the system comprises a light generating device and a control system, wherein the light generating device is configured to provide device light to the pepper plant, wherein the device light comprises one or more of red light and far red light, wherein the red light comprises one or more wavelengths in the range of 600-700 nm, and wherein the far red light comprises one or more wavelengths in the range of 700-800 nm.
Claims15
A system for cultivating a pepper plant, wherein the system comprises a light generating device and a control system, wherein the light generating device is configured to provide device light to the pepper plant, wherein the device light comprises one or more of red light and far red light, wherein the red light comprises one or more wavelengths in the range of 600-700 nm, and wherein the far red light comprises one or more wavelengths in the range of 700-800 nm;
- wherein the system has an operational mode wherein:
- the control system is configured to acquire an input signal, wherein the input signal relates to a plant load-related parameter of the pepper plant, a plant load being a number of fruits hanging on a plant, wherein the plant load-related parameter is selected from the group comprising the plant load, a flowering rate, a flower abortion rate, a fruit set rate, and a fruit abortion rate;
- the control system is configured to determine a plant load based on the input signal, and wherein one or more of the following applies:
- (i) the control system is configured to compare the plant load to a lower plant load threshold, and to select a target R:FR ratio of red light to far red light above a threshold ratio T if the plant load is lower than the lower plant load threshold;
- and (ii) the control system is configured to compare the plant load to a higher plant load threshold, and to select the target R:FR ratio below the threshold ratio T if the plant load is higher than the higher plant load threshold, wherein the threshold ratio T is selected from the range of 10-25;
- the control system is configured to control the light generating device to expose the pepper plant to the target R:FR ratio.
A method for cultivating a pepper plant, wherein the method comprises:
- acquiring an input signal, wherein the input signal relates to a plant load-related parameter of the pepper plant, a plant load being a number of fruits hanging on a plant, wherein the plant load-related parameter is selected from the group comprising a plant load, a flowering rate, a flower abortion rate, a fruit set rate, and a fruit abortion rate;
- determining a plant load based on the input signal, and one or more of:
- (i) comparing the plant load to a lower plant load threshold, and selecting a target R:FR ratio of red light to far red light above a threshold ratio T if the plant load is lower than the lower plant load threshold;
- and (ii) comparing the plant load to a higher plant load threshold, and selecting a target R:FR ratio below the threshold ratio T if the plant load is higher than the higher plant load threshold, wherein the red light comprises one or more wavelengths in the range of 600-700 nm, and wherein the far red light comprises one or more wavelengths in the range of 700-800 nm, wherein the threshold ratio is selected from the range of 10-25;
- exposing the pepper plant to the target R:FR ratio by providing device light.
Dependencies are inferred from the claim text.