CA2303639C - Method for accelerating plant growth with a protective covering - Google Patents
Method for accelerating plant growth with a protective covering Download PDFInfo
- Publication number
- CA2303639C CA2303639C CA002303639A CA2303639A CA2303639C CA 2303639 C CA2303639 C CA 2303639C CA 002303639 A CA002303639 A CA 002303639A CA 2303639 A CA2303639 A CA 2303639A CA 2303639 C CA2303639 C CA 2303639C
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- CA
- Canada
- Prior art keywords
- covering
- light
- cover
- growth
- plants
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protection of plants
- A01G13/30—Ground coverings
- A01G13/32—Mats; Nets; Sheets or films
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Cultivation Of Plants (AREA)
- Protection Of Plants (AREA)
Abstract
A method for encouraging growth of plants, in particular turf, consisting of covering the surface of soil with a reusable lightweight cover which is breathable and permits the passage of light and moisture. The light is permitted to pass through the cover, having a wavelength of between about 475 and 575 nanometers. Wavelengths below and above this are substantially prevented from passing through the cover. The cover may be applied before the onset of winter, and removed the following spring when the minimum daily temperature exceeds 0°C.
Description
-1_ METHOD FOR ACCELERATING PLANT GROWTH WITH A
PROTECTIVE COVERING
Field of the Invention The present invention relates to horticulture. In particular, the invention relates to a method for accelerating the growth and germination of turf, decorative plantings and other plantings by covering same with a covering having selected properties.
Background of the Invention Growers of turf and other plantings, particularly in northern climates, often wish to get an early start on the season. Businesses such as turf farms, golf courses, resort hotels and the like, place a high economic value on an early start to the spring growing season. Unfortunately, a combination of frost, desiccation, and low soil temperatures can severely inhibit early season plant growth. Thus, it is desirable to provide a means by which such commercial operators may encourage growth of sod and other plantings despite inclement conditions. The same requirements apply to persons who grow sod in areas of high use, including sports facilities such as golf greens, playing fields or grass tennis courts, or as well as parklands and other grounds which experience high wear. As well, many homeowners have a desire have a green and lush lawn for as long a season as possible. As well, groundskeepers for athletic fields and the like often are required to rapidly regrow turf after an athletic event. For all of the various needs outlined above, and others, there is a need for a method to rapidly and easily accelerate the normal pace of growth of turf and other plantings.
It is known to cover turf, seed beds and other young plants with a tarp which permits the passage of light. For example, U.S. patent 5,070,643 (Hinsperger) discloses a method for protecting outdoor areas of grass and other plants, by covering the area with an open weave material. The material is U.V. stabilized plastic covering which permits the passage of at least a portion of sunlight.
A
covering of this type serves to protect the underlying ground from elements, such as driving rain, hail, light snow, and the like. As well, a "green house effect" may be achieved whereby the sun's warmth is trapped beneath the cover, to more rapidly heat the underlying soil, and further to provide slightly insulative qualities to minimize overnight frost damage. This method provides benefits over the absence of any protective covering, but still does not achieve the rapid growth which may be required by golf course developers and others who achieve significant economic benefits by achieving rapid early season sod growth.
Thus, there is a need for an improved method for achieving rapid sod and other plant growth.
The use of coverings to protect turf repre~~ents a balance of various factors.
In particular, in order to prevent soil overheating during daylight hours, the cover must block a portion of the sunlight. For example, in Hinsperger's patent 5,070,643, the cover comprises a lace coating, approximately thirty percent of which is covered by a non light-transmissible layer. Thus, somewhere in excess of thirty percent of the sunlight is blocked. In the absence of such blockage, the plants under the cover would be killed by excess heat on sunny days. At the same time, sufficient light must reach they plants to permit growth. Further, the cover must be durable while at the same time being sufficiently thin to present easy handling and storage of large coverings.
In light of the above requirements, it is an object of the present invention to provide a method for expediting the gro~nrth and germination of sod and other plants such as flowers and vegetables. 't is a further aspect to enhance such growth, by providing a protective layer against the elements which also permits the passage of sufficient sunlight for ma:~cimal plant growth.
Summary of the Invention In light of the above objects and requirements, the present invention takes ad-vantage of the high degree of selectivity of most plants in the light wavelengths which are effectively absorbed and usecl by the plant. In the present invention, the covering is provided which permits the transmission of light of select wavelengths while blocking the passage of otherwavelengths. Careful selection of transmissible wavelengths permits the material to block sufficient light, particularly infrared and near infrared spectra, to prevent overheating during daylight hours, while at the same time permitting the passage of light in the useable spectra to maximize plant growth. Specifically, it has been found that a covering may permit transmission of light in the green spectra, having a wavelength of between approximately 475 nm and 575 nm, while significantly blocking other wavelengths. This transmission of l0 light in spectra which are optimally absorbed by plant chlorophyl of the target species, while blocking a large portion of wavelengths which lead to overheating.
Thus, according to one aspect of the invention, a covering is provided for protecting turf or other areas planted with a desired plant species, comprising a lightweight, one piece cover formed from a material which permits the transmission of light in the spectra having a wavelength of between 475 and 575 nanometers, and substantially blocks the passage of light having a wavelength less than or greater than this range. In a preferred version, the material comprises a woven plastic fabric.
In a further aspect, the invention comprises a method for protecting plant growth against the elements while encouraging plant growth and germination, comprising the steps of:
providing a one piece cover formed from a material which permits the transmission of light in the spectra of between 475 and 575 nanometers, while substantially blocking the transmission of wavelengths below and above this range, said covering permitting the passage of air and moisture through openings within the material; and covering the surface of the soil with said material.
Preferably, about 12 - 14% of light in the 530 nm region is transmitted; with the transmission fading off to 2 - 4% at wavelengths more than 100 nm above and below this peak.
In one aspect, radiation below 450 nm and above 650 nm is transmitted at less than 5% of incident light.
In another aspect, radiation in the red and near infrared spectra (i.e. above nm) is transmitted at between 2% and about 4% of incident light, to permit a controlled amount of greenhouse heating.
to Desirably, the cover is formed from a woven plastic material which permits the passage of air and moisture there through, while having a sufficiently tight weave to retain suitable insulative qualities to minimize frost damage to the plants. The material may comprise an open weave scrim formed from polypropylene, which optimally is laminated with a striped lace coating formed from a plastic material compatible with the polypropylene of the strips.
In a further aspect, an area of outdoor grass or other plants may be protected from desiccation and winter kill, by increasing turf temperature and stimulating early root and top growth by covering the area in the fall with the cover characterized above, 20 securing the cover in position, so as to remain in direct contact with the underlying soil or plants, and maintaining the cover in contact with the plants during winter months. The cover is then removed in the spring after all danger of frost has passed and average temperatures are sufficiently high to permit suitable rates of plant growth.
In a further aspect, the method may be used to quickly repair by regrowth damaged turf, such as playing fields or golf greens in mid-season. In this aspect, the method for encouraging plant growth may comprise the step of placing a cover as characterized above, on a turf covered area at a time of year when normal rapid 30 . turf growth occurs. The cover is left in position for a period of about one week or less, or alternatively for about two weeks or less to provide short-term, accelerated turf recovery.
Having thus generally characterized the invention, the invention will now be further described by way of a detailed description of the preferred embodiments thereof, and by reference to the accompanying drawings.
Brief Descnj~tion of the Drawings Figure 1 is a plan view, from above, of an area of turf covered by a covering according to the present invention;
Figure 2 is a more detailed view of a portion of a covering according to the present invention;
Figure 3 is a schematic view of a cross section of a portion of covering according to the present invention, illustrating graphically the selective transmission of light radiation there through;
Figure 4 is a graph showing the selective transmission of light of a spectrum of wavelengths through a covering according to the present invention.
Detailed Description of the Preferred Embodiments Figure 1 illustrates a covering 10, staked to the ground 12 over a region of turf such as a golf course putting green or the like. Conveniently, the covering, comprises a plurality of panels of convenient size, stitched together to form a one piece covering of a suitable size to cover a desired area of grass.
Essentially, the only limit to the size of such a covering is the ease of handling of a large covering.
As will be discussed below, the fabric material which forms the covering is relatively thin, thus permitting the use of a large covering without undo difficulty in handling and storage. The porosity of the covering makes the handling easier, especially folding of the tarp, since air pockets will tend not to be trapped within the tarp.
The periphery of the covering is staked to the ground, by plurality of stakes spaced apart by a desired amount. Such stakes may be joined to the tarp either via cords 18, or the stakes may be simply passed through grommet openings 20 within the tarp 10. Alternatively, if thin wire stakes are used, the stakes may be simply pushed through the fabric.
In a convenient method of application of the covering, the covering is removed from storage and unfolded or unrolled over the turf, in the fall months after the growing season has ended. The covering is then permitted to remain in position over the winter. The covering experiences little damage from snow or frost.
The covering is then permitted to remain in place during the early spring months when turf growth commences, encouraged by the protection given by the tarp. The covering may be removed when the minimum daily temperature exceeds 0°C, i.e., when the risk of overnight frost is substantially gone.
The covering acts as a filter to screen out certain frequencies of light, and permit the passage of other frequencies. As will be seen in Figure 4, maximal transmission is permitted for light between the wavelengths of about 475 to nanometers, with a peak at approximately 530 nanometers. Transmission falls off rapidly above and below this range. The optimal range is within the green colour of the spectrum. At 530 nm, transmission is between 12 -14%. This falls off to 10% at 475 and 575 nm, and to 2 - 4% at wavelengths below 430 nm and above 630 nm. However, as seen in Figure 4, red and infrared radiation (680 nm and above) is transmitted at a higher level to permit a degree of green house heating.
It has been found that the provision of a covering having the above characteristics, provides optimal plant growth while minimizing overheating due to a "greenhouse effect' when strong sunlight strikes the covering.
Conveniently, the covering may be permitted to remain on the ground surface during the early spring, and removed when the weather is sufficiently warm to permit natural plant growth without the inducement of the covering. As well, it may _7-be convenient when such a method is used on, for example, golf courses, to remove the covering during hours of operation of the golf course, and replace it on weekdays or after hours to further encourage turf growth.
It will be seen that the light transmission properties selected for the covering permits transmission of a small but noticeable quantity of light in the red end of the spectrum, thereby permitting a degree of green house warming. However, blockage of a significant portion of light in this end of the spectrum prevents overheating during daylight hours, while at the same time preventing excessive losses due to radiation at night {particularly on clear nights), thereby preventing frost damage during nights of hard frost and maintaining a suitable soil temperature for plant growth.
The covering is conveniently fastened to the ground, by one or more of the methods described in U.S. patent, 5,070,643, including forming an inward fold around the perimeter of the cover to provide a strengthened region to hold an array of stakes, or providing straddling cords or straps to extend across the cover, and staking these cords, to prevent billowing in the wind. Cords, straps or webs may criss-cross or be diagonally disposed on the cover. The cords may be staked by V-shaped stakes, which straddle the cords.
The methods described above may be used either to encourage the growth of existing turf, or to speed up germination and early growth of newly-seeded areas.
Alternatively, the covering may be placed on a region of turf which has been damaged, for example an athletic field or a golf green. For this use, the cover is positioned on the turf during a period of non-use, which normally would occur during the normal turf-growing season. The cover is left in position for a relatively short time, e.g. about one week or less. This method provides a rapid means to repair and re-grow sod which has experienced a measure of damage, but not so much as to require complete re-sodding.
PROTECTIVE COVERING
Field of the Invention The present invention relates to horticulture. In particular, the invention relates to a method for accelerating the growth and germination of turf, decorative plantings and other plantings by covering same with a covering having selected properties.
Background of the Invention Growers of turf and other plantings, particularly in northern climates, often wish to get an early start on the season. Businesses such as turf farms, golf courses, resort hotels and the like, place a high economic value on an early start to the spring growing season. Unfortunately, a combination of frost, desiccation, and low soil temperatures can severely inhibit early season plant growth. Thus, it is desirable to provide a means by which such commercial operators may encourage growth of sod and other plantings despite inclement conditions. The same requirements apply to persons who grow sod in areas of high use, including sports facilities such as golf greens, playing fields or grass tennis courts, or as well as parklands and other grounds which experience high wear. As well, many homeowners have a desire have a green and lush lawn for as long a season as possible. As well, groundskeepers for athletic fields and the like often are required to rapidly regrow turf after an athletic event. For all of the various needs outlined above, and others, there is a need for a method to rapidly and easily accelerate the normal pace of growth of turf and other plantings.
It is known to cover turf, seed beds and other young plants with a tarp which permits the passage of light. For example, U.S. patent 5,070,643 (Hinsperger) discloses a method for protecting outdoor areas of grass and other plants, by covering the area with an open weave material. The material is U.V. stabilized plastic covering which permits the passage of at least a portion of sunlight.
A
covering of this type serves to protect the underlying ground from elements, such as driving rain, hail, light snow, and the like. As well, a "green house effect" may be achieved whereby the sun's warmth is trapped beneath the cover, to more rapidly heat the underlying soil, and further to provide slightly insulative qualities to minimize overnight frost damage. This method provides benefits over the absence of any protective covering, but still does not achieve the rapid growth which may be required by golf course developers and others who achieve significant economic benefits by achieving rapid early season sod growth.
Thus, there is a need for an improved method for achieving rapid sod and other plant growth.
The use of coverings to protect turf repre~~ents a balance of various factors.
In particular, in order to prevent soil overheating during daylight hours, the cover must block a portion of the sunlight. For example, in Hinsperger's patent 5,070,643, the cover comprises a lace coating, approximately thirty percent of which is covered by a non light-transmissible layer. Thus, somewhere in excess of thirty percent of the sunlight is blocked. In the absence of such blockage, the plants under the cover would be killed by excess heat on sunny days. At the same time, sufficient light must reach they plants to permit growth. Further, the cover must be durable while at the same time being sufficiently thin to present easy handling and storage of large coverings.
In light of the above requirements, it is an object of the present invention to provide a method for expediting the gro~nrth and germination of sod and other plants such as flowers and vegetables. 't is a further aspect to enhance such growth, by providing a protective layer against the elements which also permits the passage of sufficient sunlight for ma:~cimal plant growth.
Summary of the Invention In light of the above objects and requirements, the present invention takes ad-vantage of the high degree of selectivity of most plants in the light wavelengths which are effectively absorbed and usecl by the plant. In the present invention, the covering is provided which permits the transmission of light of select wavelengths while blocking the passage of otherwavelengths. Careful selection of transmissible wavelengths permits the material to block sufficient light, particularly infrared and near infrared spectra, to prevent overheating during daylight hours, while at the same time permitting the passage of light in the useable spectra to maximize plant growth. Specifically, it has been found that a covering may permit transmission of light in the green spectra, having a wavelength of between approximately 475 nm and 575 nm, while significantly blocking other wavelengths. This transmission of l0 light in spectra which are optimally absorbed by plant chlorophyl of the target species, while blocking a large portion of wavelengths which lead to overheating.
Thus, according to one aspect of the invention, a covering is provided for protecting turf or other areas planted with a desired plant species, comprising a lightweight, one piece cover formed from a material which permits the transmission of light in the spectra having a wavelength of between 475 and 575 nanometers, and substantially blocks the passage of light having a wavelength less than or greater than this range. In a preferred version, the material comprises a woven plastic fabric.
In a further aspect, the invention comprises a method for protecting plant growth against the elements while encouraging plant growth and germination, comprising the steps of:
providing a one piece cover formed from a material which permits the transmission of light in the spectra of between 475 and 575 nanometers, while substantially blocking the transmission of wavelengths below and above this range, said covering permitting the passage of air and moisture through openings within the material; and covering the surface of the soil with said material.
Preferably, about 12 - 14% of light in the 530 nm region is transmitted; with the transmission fading off to 2 - 4% at wavelengths more than 100 nm above and below this peak.
In one aspect, radiation below 450 nm and above 650 nm is transmitted at less than 5% of incident light.
In another aspect, radiation in the red and near infrared spectra (i.e. above nm) is transmitted at between 2% and about 4% of incident light, to permit a controlled amount of greenhouse heating.
to Desirably, the cover is formed from a woven plastic material which permits the passage of air and moisture there through, while having a sufficiently tight weave to retain suitable insulative qualities to minimize frost damage to the plants. The material may comprise an open weave scrim formed from polypropylene, which optimally is laminated with a striped lace coating formed from a plastic material compatible with the polypropylene of the strips.
In a further aspect, an area of outdoor grass or other plants may be protected from desiccation and winter kill, by increasing turf temperature and stimulating early root and top growth by covering the area in the fall with the cover characterized above, 20 securing the cover in position, so as to remain in direct contact with the underlying soil or plants, and maintaining the cover in contact with the plants during winter months. The cover is then removed in the spring after all danger of frost has passed and average temperatures are sufficiently high to permit suitable rates of plant growth.
In a further aspect, the method may be used to quickly repair by regrowth damaged turf, such as playing fields or golf greens in mid-season. In this aspect, the method for encouraging plant growth may comprise the step of placing a cover as characterized above, on a turf covered area at a time of year when normal rapid 30 . turf growth occurs. The cover is left in position for a period of about one week or less, or alternatively for about two weeks or less to provide short-term, accelerated turf recovery.
Having thus generally characterized the invention, the invention will now be further described by way of a detailed description of the preferred embodiments thereof, and by reference to the accompanying drawings.
Brief Descnj~tion of the Drawings Figure 1 is a plan view, from above, of an area of turf covered by a covering according to the present invention;
Figure 2 is a more detailed view of a portion of a covering according to the present invention;
Figure 3 is a schematic view of a cross section of a portion of covering according to the present invention, illustrating graphically the selective transmission of light radiation there through;
Figure 4 is a graph showing the selective transmission of light of a spectrum of wavelengths through a covering according to the present invention.
Detailed Description of the Preferred Embodiments Figure 1 illustrates a covering 10, staked to the ground 12 over a region of turf such as a golf course putting green or the like. Conveniently, the covering, comprises a plurality of panels of convenient size, stitched together to form a one piece covering of a suitable size to cover a desired area of grass.
Essentially, the only limit to the size of such a covering is the ease of handling of a large covering.
As will be discussed below, the fabric material which forms the covering is relatively thin, thus permitting the use of a large covering without undo difficulty in handling and storage. The porosity of the covering makes the handling easier, especially folding of the tarp, since air pockets will tend not to be trapped within the tarp.
The periphery of the covering is staked to the ground, by plurality of stakes spaced apart by a desired amount. Such stakes may be joined to the tarp either via cords 18, or the stakes may be simply passed through grommet openings 20 within the tarp 10. Alternatively, if thin wire stakes are used, the stakes may be simply pushed through the fabric.
In a convenient method of application of the covering, the covering is removed from storage and unfolded or unrolled over the turf, in the fall months after the growing season has ended. The covering is then permitted to remain in position over the winter. The covering experiences little damage from snow or frost.
The covering is then permitted to remain in place during the early spring months when turf growth commences, encouraged by the protection given by the tarp. The covering may be removed when the minimum daily temperature exceeds 0°C, i.e., when the risk of overnight frost is substantially gone.
The covering acts as a filter to screen out certain frequencies of light, and permit the passage of other frequencies. As will be seen in Figure 4, maximal transmission is permitted for light between the wavelengths of about 475 to nanometers, with a peak at approximately 530 nanometers. Transmission falls off rapidly above and below this range. The optimal range is within the green colour of the spectrum. At 530 nm, transmission is between 12 -14%. This falls off to 10% at 475 and 575 nm, and to 2 - 4% at wavelengths below 430 nm and above 630 nm. However, as seen in Figure 4, red and infrared radiation (680 nm and above) is transmitted at a higher level to permit a degree of green house heating.
It has been found that the provision of a covering having the above characteristics, provides optimal plant growth while minimizing overheating due to a "greenhouse effect' when strong sunlight strikes the covering.
Conveniently, the covering may be permitted to remain on the ground surface during the early spring, and removed when the weather is sufficiently warm to permit natural plant growth without the inducement of the covering. As well, it may _7-be convenient when such a method is used on, for example, golf courses, to remove the covering during hours of operation of the golf course, and replace it on weekdays or after hours to further encourage turf growth.
It will be seen that the light transmission properties selected for the covering permits transmission of a small but noticeable quantity of light in the red end of the spectrum, thereby permitting a degree of green house warming. However, blockage of a significant portion of light in this end of the spectrum prevents overheating during daylight hours, while at the same time preventing excessive losses due to radiation at night {particularly on clear nights), thereby preventing frost damage during nights of hard frost and maintaining a suitable soil temperature for plant growth.
The covering is conveniently fastened to the ground, by one or more of the methods described in U.S. patent, 5,070,643, including forming an inward fold around the perimeter of the cover to provide a strengthened region to hold an array of stakes, or providing straddling cords or straps to extend across the cover, and staking these cords, to prevent billowing in the wind. Cords, straps or webs may criss-cross or be diagonally disposed on the cover. The cords may be staked by V-shaped stakes, which straddle the cords.
The methods described above may be used either to encourage the growth of existing turf, or to speed up germination and early growth of newly-seeded areas.
Alternatively, the covering may be placed on a region of turf which has been damaged, for example an athletic field or a golf green. For this use, the cover is positioned on the turf during a period of non-use, which normally would occur during the normal turf-growing season. The cover is left in position for a relatively short time, e.g. about one week or less. This method provides a rapid means to repair and re-grow sod which has experienced a measure of damage, but not so much as to require complete re-sodding.
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for encouraging plant growth, improving soil conditions and minimizing overheating of plants and soil, comprising the steps of:
covering the surface of the soil with a reusable light weight cover comprising at least one panel of breathable material which permits passage of air and moisture therethrough, and permitting the passage of light having a wavelength of between about 475 and 575 nanometers therethrough, while substantially preventing transmission of light at wavelengths below and above said range.
covering the surface of the soil with a reusable light weight cover comprising at least one panel of breathable material which permits passage of air and moisture therethrough, and permitting the passage of light having a wavelength of between about 475 and 575 nanometers therethrough, while substantially preventing transmission of light at wavelengths below and above said range.
2. The method defined in claim l, wherein said material comprises a woven plastic material formed from woven plastic strips.
3. The method defined in claim 2, wherein said plastic strips are formed from a plastic selected from:
polyethylene and polypropylene
polyethylene and polypropylene
4. The method defined in claim 1, wherein said material comprises a woven material, having a nonuniform lace coating laminated thereto, to provide additional strength to the material and to partially block transmission of light through said material.
5. The method as described in any one of claims 1 to 4, wherein said covering is applied before the onset of winter, and removed the following spring when the minimum daily temperature exceeds 0°C.
6. A method as defined in any one of claims 1 to 5, wherein said plant comprises grass.
7. A method as described in any one of claims 1 to 5, for facilitating and speeding up the germination of plants.
8. A method as defined in any one of claims 1 to 7, wherein transmission of light at approximately 530 nm is between 12 and 14% of incident light, and in the spectra below 450 nm and above 650 nm, is below 5%.
9. A method as defined in any one of claims 1 to 7, wherein radiation in the red and near infrared end of the spectrum is transmitted through said covering at about 4%-6% of incident light.
10. A method as defined in any one of claims 1 to 9, wherein said covering is placed on a region of damaged sod and left on said region for about seven days or less, for accelerating the re-growth and repair of sod within said region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002303639A CA2303639C (en) | 2000-03-31 | 2000-03-31 | Method for accelerating plant growth with a protective covering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002303639A CA2303639C (en) | 2000-03-31 | 2000-03-31 | Method for accelerating plant growth with a protective covering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2303639A1 CA2303639A1 (en) | 2001-09-30 |
| CA2303639C true CA2303639C (en) | 2005-07-05 |
Family
ID=4165759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002303639A Expired - Lifetime CA2303639C (en) | 2000-03-31 | 2000-03-31 | Method for accelerating plant growth with a protective covering |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2303639C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637686B (en) * | 2016-07-28 | 2018-10-11 | 吳炎東 | Method for increasing antioxidants of a plant |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7207136B2 (en) | 2002-12-23 | 2007-04-24 | Peter Hinsperger | Method and protective, E.G., for grass protection, restoration, seed germination |
| CN103548546A (en) * | 2012-12-25 | 2014-02-05 | 甘肃祥业农业投资开发有限公司 | Crop culturing method |
-
2000
- 2000-03-31 CA CA002303639A patent/CA2303639C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI637686B (en) * | 2016-07-28 | 2018-10-11 | 吳炎東 | Method for increasing antioxidants of a plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2303639A1 (en) | 2001-09-30 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20200331 |