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WO2025238517A1 - Device and method for protecting plants - Google Patents

Device and method for protecting plants

Info

Publication number
WO2025238517A1
WO2025238517A1 PCT/IB2025/054958 IB2025054958W WO2025238517A1 WO 2025238517 A1 WO2025238517 A1 WO 2025238517A1 IB 2025054958 W IB2025054958 W IB 2025054958W WO 2025238517 A1 WO2025238517 A1 WO 2025238517A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular element
fluid
ground
plant protection
tubular
Prior art date
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.)
Pending
Application number
PCT/IB2025/054958
Other languages
French (fr)
Inventor
Olivier HALDI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2025238517A1 publication Critical patent/WO2025238517A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A01G13/06—Devices for generating heat, smoke or fog in gardens, orchards or forests, e.g. to prevent damage by frost
    • 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
    • A01G13/08—Mechanical apparatus for circulating the air

Definitions

  • the invention relates to a device and method for protecting plants, particularly against frost and various diseases. It relates in particular to the protection of fruit trees or vines.
  • the present invention offers an alternative to existing plant protection devices.
  • the plant protection device comprises:
  • At least one tubular element consisting of a wall made of a waterproof material
  • the device is characterized by the fact that the wall of the tubular element has a plurality of orifices through which the fluid can flow outwards from the tubular element, thus constituting a series of point treatment sources.
  • the plant protection method according to the invention comprises the application of a fluid to the plants; said fluid flowing previously into a tubular element and through a plurality of orifices arranged on the wall of the tubular element.
  • the fluid is preferably hot air.
  • the air can be hot or cold, forced or not. In this case, it contains one or more plant protection products.
  • the device comprises a set of tubular elements which form a network, the latter being at least connected to a fluid inlet, e.g. pulsed air.
  • a fluid inlet e.g. pulsed air.
  • each tubular element is made of a flexible material.
  • the tubular element can be placed on the ground or suspended, for example by being attached to a tree.
  • the tubular element can advantageously be inflatable. In this variant, it is the introduction of the fluid that inflates the tubular element.
  • This configuration has the particular advantage of minimizing the bulk of the tubular element when it is not in use or needs to be moved.
  • each tubular element is rigid.
  • the element is preferably buried in the ground.
  • each orifice includes a tubular extension whose free end emerges from the ground.
  • a pulsed hot air generator can be used as a heat source, capturing and circulating hot air in the tubular element(s).
  • Any other heat source can be used, including renewable energy sources, particularly solar, wind or geothermal, the latter of which can be extracted using a heat pump.
  • renewable energy sources particularly solar, wind or geothermal, the latter of which can be extracted using a heat pump.
  • the dimensions of the tubular element and the orifices are not limited, provided that they allow the desired goal to be achieved, namely to prevent freezing by providing sufficient heat in the environment of the plants.
  • a tubular element can be several meters long, or even several tens of meters, with a diameter of 70 cm and orifices of 4 cm in diameter.
  • the interval between 2 successive orifices can be 1 m.
  • Figure 1 Network of deflated tubular elements attached to apricot trees.
  • Figure 2 Assembly consisting of a deflated tubular element connected to a connecting tube.
  • Figure 3 Attachment of 4 connecting tubes to a pulsed hot air generator.
  • FIG. 4 Forced hot air generator.
  • Figure 5 Inflated tubular element.
  • Figure 6 Tubular element attached to a cable by means of carabiners.
  • Figure 7 Winder/unwinder for tubular element.
  • Figure 8 Diagram showing an example of a device according to the invention used in an apricot orchard.
  • FIG. 1 to 8 The example illustrated in Figures 1 to 8 comprises inflatable tubular elements which, in the absence of a heat transfer fluid, take the form of tarpaulins (see Figures 1 and 2). Each tubular element is connected to a connecting tube (see Figure 2) which includes a helical reinforcement, thus ensuring that the tubular shape is maintained even in the absence of a heat transfer fluid.
  • the connecting tubes provide communication between the hot air generator (see figures 3 and 4) and the tubular elements. Note that the use of connecting tubes is optional. According to an unillustrated embodiment of the invention, the tubular elements can be directly attached to the hot air generator.
  • the tubular elements are suspended from the trees.
  • the base of the tubular elements can be located approximately 10 cm above ground level, but not necessarily.
  • the temperature is measured at 9 different locations and heights, once when the heating is started (07:22) and about 1 hour 45 minutes later (09:08).
  • the device according to the invention makes it possible to increase the ambient air temperature in a relatively significant way.
  • the openings must be oriented in such a way as to ensure that the ambient air is heated.
  • each opening has a tubular extension, forming a chimney, the free end of which emerges above ground.
  • This variant of the invention has several advantages, including being maintained throughout the year and not (or hardly) occupying the space between the trees.
  • the heat transfer fluid is preferably air, but it can also be in the form of hot steam or hot water.
  • tubular elements are preferably used. However, it is possible to use a single tubular element forming a serpentine shape between the plants. It is also possible to combine the device according to the invention with other systems or accessories to increase the temperature in the environment of the plants. For this purpose, hail nets or tarpaulins can be placed over the plants, which has the effect of better retaining the heat generated by the device according to the invention.
  • the device and method according to the invention are not limited to protecting plants against frost, but also against any disease or other form of aggression, either preventively or for treatment purposes.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Greenhouses (AREA)

Abstract

Disclosed is a device for protecting plants comprising: - at least one tubular element formed from a wall made of an impermeable material, - a fluid inlet, - a mechanism for collecting and circulating the fluid connected to the tubular element; characterized in that the wall comprises a plurality of holes through which the fluid can flow out of the tubular element.

Description

Dispositif et procédé de protection des végétaux Plant protection device and method

Domaine de l’invention Scope of the invention

L’invention concerne un dispositif et une méthode de protection des végétaux, notamment contre le gel et diverses maladies. Elle concerne en particulier la protection des arbres fruitiers ou de la vigne. The invention relates to a device and method for protecting plants, particularly against frost and various diseases. It relates in particular to the protection of fruit trees or vines.

Etat de la technique State of the art

Il existe de nombreux dispositifs de lutte contre le gel, notamment des systèmes d’aspersion d’eau froide, des conducteurs électriques, des émetteurs à infrarouge, des bougies ou des brûleurs à gaz. There are many devices for combating frost, including cold water sprinkler systems, electric conductors, infrared emitters, candles or gas burners.

Il existe également de nombreux dispositifs de lutte contre des maladies, de traitement ou à titre préventif, p.ex. par pulvérisation de produits phytosanitaires. There are also many devices for combating diseases, for treatment or as a preventative measure, e.g. by spraying plant protection products.

Description générale de l’invention General description of the invention

La présente invention propose une alternative aux dispositifs existants de protection végétaux. The present invention offers an alternative to existing plant protection devices.

Le dispositif de protection des végétaux selon l’invention comprend : The plant protection device according to the invention comprises:

- au moins un élément tubulaire formé d’une paroi en matériau étanche,- at least one tubular element consisting of a wall made of a waterproof material,

- une entrée de fluide, - a fluid inlet,

- un mécanisme de captage et de circulation de fluide connecté à l’élément tubulaire. - a fluid capture and circulation mechanism connected to the tubular element.

Le dispositif se caractérise par le fait que la paroi de l’élément tubulaire comporte une pluralité d’orifices au travers desquels le fluide peut s’écouler vers l’extérieur de l’élément tubulaire, constituant de la sorte une série de sources de traitement ponctuelles. La méthode de protection des végétaux selon l’invention comprend l’application d’un fluide sur les végétaux ; ledit fluide s’écoulant préalablement dans un élément tubulaire et au travers d’une pluralité d’orifices disposés sur la paroi de l’élément tubulaire. The device is characterized by the fact that the wall of the tubular element has a plurality of orifices through which the fluid can flow outwards from the tubular element, thus constituting a series of point treatment sources. The plant protection method according to the invention comprises the application of a fluid to the plants; said fluid flowing previously into a tubular element and through a plurality of orifices arranged on the wall of the tubular element.

Pour la lutte contre le gel, le fluide est de préférence de l’air chaud. For combating freezing, the fluid is preferably hot air.

Pour la prévention ou le traitement de maladie, l’air peut être chaud ou froid, pulsé ou non. Dans ce cas, il contient un ou plusieurs produits phytosanitaires. For disease prevention or treatment, the air can be hot or cold, forced or not. In this case, it contains one or more plant protection products.

Selon un mode de réalisation de l’invention, le dispositif comprend un ensemble d’éléments tubulaires qui forment un réseau, ce dernier étant au moins connecté à une entrée de fluide, p.ex. de l’air pulsé. According to one embodiment of the invention, the device comprises a set of tubular elements which form a network, the latter being at least connected to a fluid inlet, e.g. pulsed air.

Selon une variante de l’invention, chaque élément tubulaire est formé d’un matériau flexible. L’élément tubulaire peut être posé sur le sol ou suspendu, en étant par exemple fixé à un arbre. According to one embodiment of the invention, each tubular element is made of a flexible material. The tubular element can be placed on the ground or suspended, for example by being attached to a tree.

L’élément tubulaire peut avantageusement être gonflable. Dans cette variante, c’est l’introduction du fluide qui gonfle l’élément tubulaire. The tubular element can advantageously be inflatable. In this variant, it is the introduction of the fluid that inflates the tubular element.

Cette configuration présente notamment l’avantage de minimiser l’encombrement de l’élément tubulaire lorsqu’il n’est pas utilisé ou doit être déplacé. This configuration has the particular advantage of minimizing the bulk of the tubular element when it is not in use or needs to be moved.

Selon un autre mode de réalisation de l’invention, chaque élément tubulaire est rigide. Dans ce cas, l’élément est de préférence enfoui dans le sol. According to another embodiment of the invention, each tubular element is rigid. In this case, the element is preferably buried in the ground.

Avantageusement, chaque orifice comprend une extension tubulaire dont l’extrémité libre émerge hors du sol. Advantageously, each orifice includes a tubular extension whose free end emerges from the ground.

Un générateur à air chaud pulsé peut être utilisé comme source de chaleur, de captage et de circulation d’air chaud dans le ou les éléments tubulaires. A pulsed hot air generator can be used as a heat source, capturing and circulating hot air in the tubular element(s).

Tout autre source de chaleur peut être utilisée, notamment des sources d’énergie renouvelable, en particulier solaire, éolienne ou chaleur de la terre, cette dernière source pouvant être extraite au moyen d’une pompe à chaleur. Les dimensions de l’élément tubulaire et des orifices ne sont pas limitées, pour autant qu’elles permettent d’obtenir le but recherché, à savoir de prévenir le gel par apport de chaleur suffisante dans l’environnement des végétaux. Any other heat source can be used, including renewable energy sources, particularly solar, wind or geothermal, the latter of which can be extracted using a heat pump. The dimensions of the tubular element and the orifices are not limited, provided that they allow the desired goal to be achieved, namely to prevent freezing by providing sufficient heat in the environment of the plants.

A titre d’exemple, un élément tubulaire peut avoir plusieurs mètres de longueur, voire plusieurs dizaines de mètres, un diamètre de 70 cm et des orifices de 4 cm de diamètre. L’intervalle entre 2 orifices successifs peut être de 1 m. For example, a tubular element can be several meters long, or even several tens of meters, with a diameter of 70 cm and orifices of 4 cm in diameter. The interval between 2 successive orifices can be 1 m.

Description détaillée de l’invention Detailed description of the invention

L’invention est décrite de manière plus détaillée dans ce chapitre, notamment au moyen d’exemples non-limitatifs et de figures, en rapport avec la lutte contre le gel, qui sont brièvement résumées comme suit : The invention is described in more detail in this chapter, particularly by means of non-limiting examples and figures, relating to frost protection, which are briefly summarized as follows:

Figure 1 : Réseau d’éléments tubulaires dégonflés fixés à des abricotiers. Figure 1: Network of deflated tubular elements attached to apricot trees.

Figure 2 : Ensemble formé d’un élément tubulaire dégonflé connecté à un tube de connexion. Figure 2: Assembly consisting of a deflated tubular element connected to a connecting tube.

Figure 3 : Fixation de 4 tubes de connexion à un générateur à air chaud pulsé.Figure 3: Attachment of 4 connecting tubes to a pulsed hot air generator.

Figure 4 : Générateur à air chaud pulsé. Figure 4: Forced hot air generator.

Figure 5 : Élément tubulaire gonflé. Figure 5: Inflated tubular element.

Figure 6 : Élément tubulaire fixé à un câble au moyen de mousquetons. Figure 6: Tubular element attached to a cable by means of carabiners.

Figure 7 : Enrouleur/dérouleur pour élément tubulaire. Figure 7: Winder/unwinder for tubular element.

Figure 8 : Schéma présentant un exemple de dispositif selon l’invention utilisé dans un champ d’abricotiers. Figure 8: Diagram showing an example of a device according to the invention used in an apricot orchard.

Figure 9 : Élément tubulaire rigide enfoui dans le sol Figure 9: Rigid tubular element buried in the ground

L’exemple illustré sur les figures 1 à 8 comprend des éléments tubulaires gonflables qui, en l’absence de fluide caloporteur, se présentent sous forme de bâches (voir figures 1 et 2). Chaque élément tubulaire est connecté à un tube de connexion (voir figure 2) qui comprend une armature hélicoïdale, assurant de la sorte un maintien de la forme tubulaire même en l’absence de fluide caloporteur. The example illustrated in Figures 1 to 8 comprises inflatable tubular elements which, in the absence of a heat transfer fluid, take the form of tarpaulins (see Figures 1 and 2). Each tubular element is connected to a connecting tube (see Figure 2) which includes a helical reinforcement, thus ensuring that the tubular shape is maintained even in the absence of a heat transfer fluid.

Les tubes de connexion assurent la communication entre le générateur d’air chaud (voir figures 3 et 4) et les éléments tubulaires. A noter que l’utilisation de tubes de connexion est optionnelle. Selon une variante non-illustrée de l’invention, les éléments tubulaires peuvent être directement fixés au générateur d’air chaud. The connecting tubes provide communication between the hot air generator (see figures 3 and 4) and the tubular elements. Note that the use of connecting tubes is optional. According to an unillustrated embodiment of the invention, the tubular elements can be directly attached to the hot air generator.

Il est également possible de connecter l’extrémité d’un seul tube au générateur d’air chaud, puis de connecter l’autre extrémité à un élément tubulaire communicant directement à un ensemble d’autres éléments tubulaires. It is also possible to connect one end of a single tube to the hot air generator, and then connect the other end to a tubular element communicating directly with a set of other tubular elements.

Dans l’exemple illustré, les éléments tubulaires sont suspendus aux arbres. La base des éléments tubulaires peut se situer à environ 10 cm au-dessus du niveau du sol, mais pas nécessairement. In the illustrated example, the tubular elements are suspended from the trees. The base of the tubular elements can be located approximately 10 cm above ground level, but not necessarily.

Dans l’exemple de la figure 8, la température est mesurée en 9 endroits et hauteurs différentes, une fois lors du démarrage du chauffage (07 :22) et environ 1h45 plus tard (09 :08). In the example in Figure 8, the temperature is measured at 9 different locations and heights, once when the heating is started (07:22) and about 1 hour 45 minutes later (09:08).

Comme on peut le constater, le dispositif selon l’invention permet d’augmenter la température de l’air ambiant de manière relativement importante. As can be seen, the device according to the invention makes it possible to increase the ambient air temperature in a relatively significant way.

Il est également possible de simplement poser les éléments tubulaires sur le sol. Dans cette variante toutefois, les orifices doivent être orientés de manière à assurer un réchauffement de l’air ambiant. It is also possible to simply place the tubular elements on the ground. In this version, however, the openings must be oriented in such a way as to ensure that the ambient air is heated.

Dans l’exemple de la figure 9, les éléments tubulaires sont rigides et enfouis dans le sol. Dans ce cas, chaque orifice comporte une extension tubulaire, formant une cheminée, dont l’extrémité libre émerge hors du sol. In the example in Figure 9, the tubular elements are rigid and buried in the ground. In this case, each opening has a tubular extension, forming a chimney, the free end of which emerges above ground.

Cette variante de l’invention présente divers avantages, dont celui d’être maintenue pendant toute l’année et de ne pas (ou peu) occuper l’espace entre les arbres. This variant of the invention has several advantages, including being maintained throughout the year and not (or hardly) occupying the space between the trees.

Il va de soi que l’invention ne se limite pas aux exemples illustrés. It goes without saying that the invention is not limited to the illustrated examples.

Le fluide caloporteur est de préférence de l’air, mais il peut également se présenter sous forme de vapeur chaude ou d’eau chaude. The heat transfer fluid is preferably air, but it can also be in the form of hot steam or hot water.

Il est également possible d’utiliser plusieurs sources de chaleur et/ou plusieurs mécanismes de captage et de circulation du fluide caloporteur. It is also possible to use several heat sources and/or several mechanisms for capturing and circulating the heat transfer fluid.

Plusieurs éléments tubulaires sont utilisés de préférence. Il est toutefois possible d’utiliser un seul élément tubulaire formant un serpentin entre les végétaux. Il est également possible d’associer le dispositif selon l’invention avec d’autres systèmes ou accessoires permettant d’augmenter la température dans l’environnement des végétaux. A cet effet, des filets anti-grêle ou des bâches peuvent être déposés au-dessus des végétaux, ce qui a pour effet de mieux conserver la chaleur générée par le dispositif selon l’invention. Several tubular elements are preferably used. However, it is possible to use a single tubular element forming a serpentine shape between the plants. It is also possible to combine the device according to the invention with other systems or accessories to increase the temperature in the environment of the plants. For this purpose, hail nets or tarpaulins can be placed over the plants, which has the effect of better retaining the heat generated by the device according to the invention.

Enfin, comme mentionné précédemment, le dispositif et la méthode selon l’invention ne sont pas limités à la protection des végétaux contre le gel, mais également contre toute maladie ou autre forme d’agression, à titre préventif ou à des fins de traitement. Finally, as mentioned previously, the device and method according to the invention are not limited to protecting plants against frost, but also against any disease or other form of aggression, either preventively or for treatment purposes.

Claims

Revendications Demands 1 . Dispositif de protection des végétaux comprenant : 1. Plant protection system comprising: - au moins un élément tubulaire formé d’une paroi en matériau étanche,- at least one tubular element consisting of a wall made of a waterproof material, - une entrée de fluide, - a fluid inlet, - un mécanisme de captage et de circulation du fluide connecté à l’élément tubulaire ; caractérisé en ce que ladite paroi comporte une pluralité d’orifices au travers desquels le fluide peut s’écouler vers l’extérieur de l’élément tubulaire. - a fluid capture and circulation mechanism connected to the tubular element; characterized in that said wall has a plurality of orifices through which the fluid can flow outwards from the tubular element. 2. Dispositif selon la revendication 1 pour la protection contre le gel comprenant également une source de chaleur et dans lequel le mécanisme de captage et de circulation de fluide est connecté à la source de chaleur et à l’élément tubulaire. 2. Device according to claim 1 for frost protection also comprising a heat source and in which the fluid collection and circulation mechanism is connected to the heat source and the tubular element. 3. Dispositif selon la revendication 1 ou 2 comprenant un ensemble d’éléments tubulaires formant un réseau connecté à ladite source et audit mécanisme. 3. Device according to claim 1 or 2 comprising a set of tubular elements forming a network connected to said source and said mechanism. 4. Dispositif selon l’une des revendications précédentes dans lequel chaque élément tubulaire est formé d’une gaine flexible configurée de manière à être déposée sur le sol ou suspendue au-dessus du sol. 4. Device according to any one of the preceding claims in which each tubular element is formed of a flexible sheath configured so as to be placed on the ground or suspended above the ground. 5. Dispositif selon l’une des revendications précédentes dans lequel chaque élément tubulaire est gonflable. 5. Device according to any one of the preceding claims wherein each tubular element is inflatable. 6. Dispositif selon l’une des revendications précédentes dans lequel chaque élément tubulaire est rigide et configuré de manière à être enfoui dans le sol. 6. Device according to any one of the preceding claims wherein each tubular element is rigid and configured so as to be buried in the ground. 7. Dispositif selon la revendication 5 dans lequel chaque orifice est formé d’un tube rigide configuré de manière que son extrémité libre émerge hors du sol. 7. Device according to claim 5 in which each orifice is formed of a rigid tube configured so that its free end emerges out of the ground. 8. Dispositif selon l’une des revendications 2 à 7 comprenant un générateur formé notamment de la source de chaleur et dudit mécanisme. 8. Device according to any one of claims 2 to 7 comprising a generator formed in particular of the heat source and said mechanism. 9. Dispositif selon l’une des revendications 2 à 7 dans lequel la source de chaleur est constituée d’une énergie renouvelable telle que le soleil, le vent ou la chaleur de la terre. 9. Device according to any one of claims 2 to 7 wherein the heat source consists of a renewable energy such as the sun, wind or heat from the earth. 10. Dispositif selon l’une des revendications précédentes dans lequel le fluide contient un ou plusieurs produits phytosanitaires. 10. Device according to any one of the preceding claims in which the fluid contains one or more plant protection products. 11. Méthode de protection des végétaux comprenant l’application d’un fluide sur les végétaux ; ledit fluide s’écoulant préalablement dans un élément tubulaire et au travers d’une pluralité d’orifices disposés sur la paroi de l’élément tubulaire. 11. Plant protection method comprising the application of a fluid to the plants; said fluid flowing beforehand into a tubular element and through a plurality of orifices arranged on the wall of the tubular element. 12. Méthode selon la revendication 11 dans laquelle le fluide est de l’air chaud. 12. Method according to claim 11 wherein the fluid is hot air. 13. Méthode selon la revendication 11 ou 12 dans laquelle le fluide est de l’air pulsé. 13. Method according to claim 11 or 12 wherein the fluid is pulsed air. 14. Méthode selon la revendication 13 dans lequel l’air pulsé est froid. 14. Method according to claim 13 wherein the forced air is cold. 15. Méthode selon l’une des revendications 11 à 14 dans lequel le fluide contient un ou plusieurs produits phytosanitaires. 15. A method according to any one of claims 11 to 14, wherein the fluid contains one or more plant protection products.
PCT/IB2025/054958 2024-05-13 2025-05-12 Device and method for protecting plants Pending WO2025238517A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB2024054640 2024-05-13
IBPCT/IB2024/054640 2024-05-13

Publications (1)

Publication Number Publication Date
WO2025238517A1 true WO2025238517A1 (en) 2025-11-20

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US661898A (en) * 1899-05-29 1900-11-13 James F Tucker Process of and apparatus for protecting trees or vegetation against cold.
GB864372A (en) * 1957-03-13 1961-04-06 James Geary Gardner Improvements in frost-damage protection devices for orchards and the like
US3205619A (en) * 1963-11-01 1965-09-14 Eastman Kodak Co Irrigating mulching sheet
FR1509448A (en) * 1967-01-25 1968-01-12 Process for the protection of crops against damage caused by hoar frost
US3727345A (en) * 1970-10-28 1973-04-17 N Smith Method of protecting plants and stimulating their growth
AU3783300A (en) * 1999-06-01 2000-12-07 Dennis James Ordish Method and system for protecting crops from frost damage
EP2521436B1 (en) * 2009-12-11 2018-01-10 Houweling Nurseries Oxnard, Inc. Greenhouse and forced greenhouse climate control system
KR102180734B1 (en) * 2020-07-14 2020-11-19 장금배 Cold-weather damage and frost prevention system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US661898A (en) * 1899-05-29 1900-11-13 James F Tucker Process of and apparatus for protecting trees or vegetation against cold.
GB864372A (en) * 1957-03-13 1961-04-06 James Geary Gardner Improvements in frost-damage protection devices for orchards and the like
US3205619A (en) * 1963-11-01 1965-09-14 Eastman Kodak Co Irrigating mulching sheet
FR1509448A (en) * 1967-01-25 1968-01-12 Process for the protection of crops against damage caused by hoar frost
US3727345A (en) * 1970-10-28 1973-04-17 N Smith Method of protecting plants and stimulating their growth
AU3783300A (en) * 1999-06-01 2000-12-07 Dennis James Ordish Method and system for protecting crops from frost damage
EP2521436B1 (en) * 2009-12-11 2018-01-10 Houweling Nurseries Oxnard, Inc. Greenhouse and forced greenhouse climate control system
KR102180734B1 (en) * 2020-07-14 2020-11-19 장금배 Cold-weather damage and frost prevention system

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