Method and apparatus for use in plant growth promotion and flower development
First Claim
1. A sunscreening article for the growth promotion of green plants, comprising a plurality of separate screens, a first of said screens comprising first agent means for absorbing at least 80% of the naturally occurring auxin inactivating UV radiation of wavelengths in the range 290-340 nm, and a second of said screens comprising second agent means for preventing transmittal through said second of said screens of at least 50% of the non-photosynthetically useful and growth retarding green/yellow and infra-red light of wavelengths in the ranges 510 to 610 nm and 800 to 2500 nm, respectively, said first screen and said second screen each allowing transmittal therethrough of at least 80% of wavelengths in the range 340-510 nm, said second screen allowing transmittal therethrough of at least 50% of wavelengths in the range 610-710 nm.
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Accused Products
Abstract
Method and apparatus for encouraging maximal plant growth which method and apparatus comprise a light filter which prevents the natural decay of plant growth stimulating materials by absorption of UV radiation while permitting photosynthesis to occur with blue light in the absence of attendant heat generating and dehydrating radiations caused by green, yellow and infra-red light. The objective is made possible according to the preferred embodiment of the invention by interposing separately, continuously, or discontinuously, a combination of filters made of solid material between the sun and the growing plants which block out radiation in those wave lengths which are either physiologically harmful or which retard growth, but do not inhibit those wavelengths which are necessary for photosynthesis, metabolism, differentiation and development.
27 Citations
28 Claims
- 1. A sunscreening article for the growth promotion of green plants, comprising a plurality of separate screens, a first of said screens comprising first agent means for absorbing at least 80% of the naturally occurring auxin inactivating UV radiation of wavelengths in the range 290-340 nm, and a second of said screens comprising second agent means for preventing transmittal through said second of said screens of at least 50% of the non-photosynthetically useful and growth retarding green/yellow and infra-red light of wavelengths in the ranges 510 to 610 nm and 800 to 2500 nm, respectively, said first screen and said second screen each allowing transmittal therethrough of at least 80% of wavelengths in the range 340-510 nm, said second screen allowing transmittal therethrough of at least 50% of wavelengths in the range 610-710 nm.
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15. A sunscreening apparatus for growth promotion of green plants, comprising:
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first screen means for absorbing at least some UV radiations of at least some wavelengths in the range of 290 to 340 nm, said first screen means acting upon radiation between the source of radiation and the subject green plants; a second screen means for absorbing at least some radiation of at least some wavelengths in the range of 510 to 610 nm and at least some radiation of wavelengths in the range of 710 to 2500 nm; and control means for selectively imposing the radiation absorbing action of said second screen means upon radiations between the source of radiation and the subject green plants, while said first screen means is acting upon radiation between the source of radiation and the subject plants. - View Dependent Claims (16, 17)
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19. A sunscreening apparatus for growth promotion of green plants, comprising a plurality of independent screens, each of said screens comprising means for absorbing radiation in a wavelength range different from the wavelength ranges absorbed by each of the other said screens, and means for moving said screens of said plurality of screens relative to one another, wherein each screen is used selectively, either alone or in combination with another screen, to affect specific wavelength radiation levels in the growing environment, through manipulation of said screens.
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20. A sunscreening apparatus for growth promotion of green plants, comprising:
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first screen means for absorbing at least some UV radiations of at least some wavelengths in the range of 290 to 330 nm, said first screen means acting upon radiation between the source of radiation and the subject green plants; second screen means for absorbing at least some radiation of at least some wavelengths in the range of 610 to 710 nm; and control means for selectively imposing the radiation absorbing action of said second screen means upon radiations between the source of radiation and the subject green plants. - View Dependent Claims (21)
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22. A sunscreening apparatus for growth promotion of green plants, comprising:
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first screen means for absorbing at least some UV radiations of at least some wavelengths in the range of 290 to 340 nm, said first screen means acting upon radiation between the source of radiation and the subject green plants; second screen means for absorbing at least some radiations of at least some wavelengths in the range of 610 to 710 nm; at least one screen means for absorbing at least some radiation of at least some wavelengths in the range of 510 to 610 nm and at least some radiation of at least some wavelengths in the range of 800 to 2500 nm, said one screen means being said first screen means or said second screen means or a third screen means; and control means for selectively imposing the radiation absorbing action of said second screen means upon radiations between the source of radiation and the subject green plants. - View Dependent Claims (23)
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24. Method of promoting growth of green plants, said method comprising the steps of:
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continually preventing exposure of the green plants to at least some UV radiation of at least some wavelengths in the range of 290 to 340 nm; and selectively preventing exposure of the green plants to at least some radiation of at least some wavelengths in the range of 510 to 710 nm and in the range of 800 to 2500 nm. - View Dependent Claims (25)
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26. Method of promoting growth of green plants, said method comprising the steps of:
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continually preventing exposure of the green plants to at least some UV radiation of at least some wavelengths in the range of 290 to 340 nm; and selectively preventing exposure of the green plants to at least some radiation of at least some wavelengths in the range of 610 to 710 nm. - View Dependent Claims (27, 28)
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Specification