WO2005094559A1 - Plant cultivation tray comprising a lower fitted support - Google Patents

Plant cultivation tray comprising a lower fitted support Download PDF

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Publication number
WO2005094559A1
WO2005094559A1 PCT/ES2005/000131 ES2005000131W WO2005094559A1 WO 2005094559 A1 WO2005094559 A1 WO 2005094559A1 ES 2005000131 W ES2005000131 W ES 2005000131W WO 2005094559 A1 WO2005094559 A1 WO 2005094559A1
Authority
WO
WIPO (PCT)
Prior art keywords
quadrangular
piece
reinforcement support
tray
plant cultivation
Prior art date
Application number
PCT/ES2005/000131
Other languages
Spanish (es)
French (fr)
Inventor
Manuel FRANCÉS PÉREZ
Original Assignee
Indesla, S.L.
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 Indesla, S.L. filed Critical Indesla, S.L.
Publication of WO2005094559A1 publication Critical patent/WO2005094559A1/en

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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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A01G9/029—Receptacles for seedlings
    • A01G9/0295—Units comprising two or more connected receptacles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/30—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves

Definitions

  • the present invention has application in the field of agriculture to provide culture trays 10 also called seedbeds for the development of seedlings intended for subsequent transplantation that are manufactured based on injected plastic materials.
  • These trays are constituted by a quadrangular piece with a perimeter flange and central body 15 in which a plurality of culture vessels generally of truncated-pyramidal shape or inverted conical trunk are configured equal to each other that are open from above and that extend down, distributed adjacently evenly 20 forming a grid. It is known to manufacture this type of trays with various rigid non-porous thermoplastic materials that are too heavy for occupational health and safety standards. In addition, these types of plastic materials are not recyclable and therefore pose a heavy burden on the environment when they must be disposed of after use.
  • the present invention proposes the development of a cultivation tray or seedbed of the type indicated at the beginning that is of reduced weight based on a plastic material that can be recycled and that also has sufficient mechanical stability to allow transport when loaded with crop peat and developing seedlings.
  • this task is solved according to the invention from a tray consisting of a quadrangular piece with a perimeter flange and tray body in which a plurality of culture vessels generally of trunk-pyramidal or conical trunk shape are configured.
  • the quadrangular part is constituted based on thermoformed polyethylene terephthalate; and a reinforcement support is provided, also based on thermoformed terephthalate polyethylene, in the form of a quadrangular plate with a plurality of box-shaped receptacles equal to each other and of complementary configuration to the lower end of the culture vessels for coupling adjusted and fitted from this end, so that when the culture vessels are fitted in the receptacles of the reinforcement support, the assembly has increased mechanical stability and rigidity.
  • the quadrangular piece and the reinforcement support are joined forming a single articulated piece through a band portion that extends from the perimeter flange of the quadrangular piece to a reinforcing support side.
  • the quadrangular part and the reinforcement support are provided fixedly joined in one piece, for example, by heat welding and / or by gluing with adhesive material.
  • Figure 1 illustrates a perspective view of a tray of culture according to the invention.
  • Figure 2 shows a side elevational view of the tray according to the invention when the reinforcement support is fitted in the tray.
  • Figure 3 illustrates in a fragmented way a section of the cultivation tray provided as a single piece by joining its two parts.
  • the culture tray is constituted by a quadrangular piece 1 having a flange 10 formed around a tray body 11 in which a plurality of culture vessels 12, for example, trunk-pyramidal, are configured. or inverted trunk-conics equal to each other that are open at the top and that are distributed evenly and adjacent to each other formed a grid-like structure.
  • a reinforcement support 2 in the form of a plate of lateral dimensions similar to those of the tray body 11 in which box-shaped receptacles 20 are provided equal to each other and with the same configuration and dimensions as the lower end of the culture vessels.
  • the culture vessels 12 inserted by their lower end 120 in the receptacles 20 of the reinforcement support and embedded therein.
  • the tray and support assembly has an increased mechanical stability and rigidity that allow to support the loading of the tray with the cultivation substrate and the seedlings that are developing therein.
  • the square piece and the reinforcement support are articulated to each other through a band or strip 3 formed integrally between a side of the perimeter flange 10 and a side of the reinforcement support.
  • the square piece 1 and the reinforcement support 2 can be permanently joined forming a single piece through a joint 4, formed by heat welding and / or by gluing by means of a adhesive material How .
  • both the quadrangular piece and the reinforcement support are made of thermoformed polyethylene terephthalate to ensure reduced weight and easy recycling of the tray and support once they have been used.

Abstract

The invention relates to an improved plant cultivation tray. The inventive tray consists of a quadrangular piece (1) comprising a peripheral rim (10) and a tray body (11) with a plurality of identical open-topped, downward-projecting cultivation containers (12) which have an inverted truncated cone or truncated pyramid shape and which are distributed uniformly adjacent to one another, such as to form grid. The quadrangular piece is made from thermoformed polyethylene terephthalate. In addition, the invention comprises a reinforcing support (2) which is also made from thermoformed polyethylene terephthalate and which takes the form of a quadrangular sheet comprising a plurality of identical box-shaped containers (20) having a configuration that is complementary to the lower end (120) of the cultivation containers for the tight housing thereof. The invention is advantageous in that the quadrangular piece (1) and the reinforcing support (2) are articulated to one another by means of an integral band or strip (3) which connects one side of the peripheral rim (10) of the quadrangular piece and one side of the reinforcing support.

Description

BANDEJA DESECHABLE PERFECCIONADA PARA CULTIVO DE PLANTASPERFECTED DISPOSABLE TRAY FOR PLANTAIN CULTURE
DESCRIPCIÓNDESCRIPTION
ÁMBITO Y TÉCNICA ANTERIORPREVIOUS SCOPE AND TECHNIQUE
La presente invención tiene aplicación en el campo de la agricultura para proporcionar bandejas de cultivo 10 también llamados semilleros para el desarrollo de plantones destinados a su posterior trasplante que están fabricadas a base de materiales plásticos inyectados. Estas bandejas están constituidas por una pieza cuadrangular con un reborde perimetral y cuerpo central 15 en el que están configurados una pluralidad de recipientes de cultivo generalmente de forma tronco- piramidal o bien tronco cónica invertida iguales entre si que están abiertos por arriba y que se extienden hacia abajo, distribuidos adyacentemente de manera uniforme 20 formando una retícula. Se conoce fabricar este tipo de bandejas con diversos materiales termoplásticos rígidos no porosos que resultan demasiado pesadas para las normas de seguridad e higiene laboral. Además, este tipo de materiales 25 plásticos no son reciclables y por tanto suponen una fuerte carga sobre el medio ambiente cuando deben eliminarse después de su utilización. Para solucionar los mencionados problemas de peso y de contaminación ambiental, se conoce la utilización de 30 semilleros a base de poliestireno expandido que si bien son mucho más ligeras, presentan inconvenientes derivados de la porosidad del material, ya que son fácilmente penetradas por el sistema radicular de los plantones lo que dificulta su extracción y también son muy propicias al desarrollo de hongos que deben ser tratados con funguicidas, perjudicando ambos el crecimiento de los plantαnes- y que constituyen una fuente de contaminación tras su utilización. Para solucionar estos problemas se han propuesto la aplicación en el interior de los recipientes de cultivo de un recubrimiento no poroso lo que resulta inaceptable desde el punto de vista de los coste de fabricación. También seria posible pensar en un aumento de la densidad del material de poliestireno expandido, pero esto conducirla a un peso elevado que tampoco resulta aceptable conforme a las recomendadas normas de seguridad e higiene laboral.The present invention has application in the field of agriculture to provide culture trays 10 also called seedbeds for the development of seedlings intended for subsequent transplantation that are manufactured based on injected plastic materials. These trays are constituted by a quadrangular piece with a perimeter flange and central body 15 in which a plurality of culture vessels generally of truncated-pyramidal shape or inverted conical trunk are configured equal to each other that are open from above and that extend down, distributed adjacently evenly 20 forming a grid. It is known to manufacture this type of trays with various rigid non-porous thermoplastic materials that are too heavy for occupational health and safety standards. In addition, these types of plastic materials are not recyclable and therefore pose a heavy burden on the environment when they must be disposed of after use. To solve the aforementioned problems of weight and environmental pollution, it is known to use 30 seedbeds based on expanded polystyrene that although they are much lighter, they have drawbacks derived from the porosity of the material, since they are easily penetrated by the root system of the seedlings, which makes their extraction difficult and they are also very conducive to the development of fungi that must be treated with fungicides, both harming the growth of the plants - and that constitute a source of contamination after their use. To solve these problems, the application inside the culture vessels of a non-porous coating has been proposed, which is unacceptable from the point of view of manufacturing costs. It would also be possible to think of an increase in the density of expanded polystyrene material, but this will lead to a high weight that is not acceptable in accordance with the recommended occupational health and safety standards.
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se plantea el desarrollo de una bandeja de cultivo o semillero del tipo indicado en un principio que sea de peso reducido a base de un material plástico susceptible de reciclado y que además tenga una suficiente estabilidad mecánica para permitir su transporte cuando está cargada con la turba de cultivo y los plantones en desarrollo. Conforme a la invención esta tarea se soluciona conforme a la invención a partir de una bandeja constituida por una pieza cuadrangular con un reborde perimetral y cuerpo de bandeja en el que están configurados una pluralidad de recipientes de cultivo generalmente de forma tronco-piramidal o tronco cónica invertida e iguales entre si que están abiertos por arriba y que se extienden hacia abajo, distribuidos adyacentemente de manera uniforme formando una retícula, que está caracterizada por cuanto: la pieza cuadrangular está constituida a base de polietileno tereftalato termo-conformado; y está previsto un soporte de refuerzo, también a base de polietileno de tereftalato termo- conformado, en forma de placa cuadrangular con una pluralidad de receptáculos en forma de caja iguales entre si y de configuración complementaria al extremo inferior de los recipientes de cultivo para acoplamiento ajustado y encajado de este extremo, de manera que cuando los recipientes de cultivo están encajados en los receptáculos del soporte de refuerzo, el conjunto presenta una estabilidad mecánica y rigidez aumentadas . Conforme a una característica adicional de la invención, la pieza cuadrangular y el soporte de refuerzo están unidos formando una sola pieza articulados a través de una porción de banda que se extiende desde el reborde perimetral de la pieza cuadrangular hasta un lateral de soporte de refuerzo. Aún de acuerdo con una característica adicional de la invención, la pieza cuadrangular y el soporte de refuerzo se proporcionan unidos fijamente formando una sola pieza, por ejemplo, mediante termo-soldadura y/o mediante encolado con material adhesivo. BREVE DESCRIPCIÓN DE LAS FIGURASThe present invention proposes the development of a cultivation tray or seedbed of the type indicated at the beginning that is of reduced weight based on a plastic material that can be recycled and that also has sufficient mechanical stability to allow transport when loaded with crop peat and developing seedlings. According to the invention, this task is solved according to the invention from a tray consisting of a quadrangular piece with a perimeter flange and tray body in which a plurality of culture vessels generally of trunk-pyramidal or conical trunk shape are configured. inverted and equal to each other that are open by above and extending downwards, distributed adjacently uniformly forming a grid, which is characterized in that: the quadrangular part is constituted based on thermoformed polyethylene terephthalate; and a reinforcement support is provided, also based on thermoformed terephthalate polyethylene, in the form of a quadrangular plate with a plurality of box-shaped receptacles equal to each other and of complementary configuration to the lower end of the culture vessels for coupling adjusted and fitted from this end, so that when the culture vessels are fitted in the receptacles of the reinforcement support, the assembly has increased mechanical stability and rigidity. According to an additional feature of the invention, the quadrangular piece and the reinforcement support are joined forming a single articulated piece through a band portion that extends from the perimeter flange of the quadrangular piece to a reinforcing support side. Even in accordance with an additional feature of the invention, the quadrangular part and the reinforcement support are provided fixedly joined in one piece, for example, by heat welding and / or by gluing with adhesive material. BRIEF DESCRIPTION OF THE FIGURES
Otras características y ventajas de la invención resultarán más claramente de la siguiente descripción realizada con la ayuda de los dibujos anexos referidos a un ejemplo de ejecución no limitativo de la invención, y en los que La figura 1 ilustra una vista en perspectiva de una bandeja de cultivo conforme a la invención. La figura 2 muestra una vista en alzado lateral de la bandeja según la invención cuando el soporte de refuerzo está encajado en la bandeja. La figura 3 ilustra de manera fragmentada una sección de la bandeja de cultivo prevista como una sola pieza por unión de sus dos partes.Other features and advantages of the invention will result more clearly from the following description made with the aid of the accompanying drawings referring to an example of non-limiting execution of the invention, and in which Figure 1 illustrates a perspective view of a tray of culture according to the invention. Figure 2 shows a side elevational view of the tray according to the invention when the reinforcement support is fitted in the tray. Figure 3 illustrates in a fragmented way a section of the cultivation tray provided as a single piece by joining its two parts.
DESCRIPCIÓN DETALLADA DE UN MODO DE REALIZACIÓNDETAILED DESCRIPTION OF AN EMBODIMENT
Como se muestra por las figuras, la bandeja de cultivo está constituida por una pieza cuadrangular 1 que tiene un reborde 10 formado alrededor de un cuerpo de bandeja 11 en el que están configurados una pluralidad de recipientes de cultivo 12, por ejemplo, tronco- piramidales o tronco-cónicas invertidas iguales entre sí que están abiertos por su parte superior y que se distribuyen uniformemente y adyacentes entre sí formado una estructura a modo de retícula. Conforme a la invención, está previsto disponer un soporte de refuerzo 2 en forma de placa de dimensiones laterales semejantes a las del cuerpo de bandeja 11 en la que están previstos unos receptáculos 20 en forma de caja iguales entre sí y con igual configuración y dimensiones que el extremo inferior los recipientes de cultivo. Como puede apreciarse de manera especialmente clara a través de la figura 2, los recipientes de cultivo 12 insertados por su extremo inferior 120 en los receptáculos 20 del soporte de refuerzo y encajados en ellos. De esta manera, el conjunto de bandeja y soporte presenta una estabilidad mecánica y rigidez aumentadas que permiten soportar la carga de la bandeja con el substrato de cultivo y los plantones que están desarrollándose en ella. Puede resultar ventajoso que la pieza cuadrangular y el soporte de refuerzo estén articulados entre sí a través de una banda o tira 3 formada integralmente entre un lateral del reborde perimetral 10 y un lateral del soporte de refuerzo. Como se muestra por la figura 3, la pieza cuadrangular 1 y el soporte de refuerzo 2, pueden estar unidos de manera permanente formando una sola pieza a través de una unión 4, formada mediante termo-soldadura y/o mediante encolado por medio de un material adhesivo. Como . se mencionó anteriormente, tanto la pieza cuadrangular como el soporte de refuerzo están fabricados a base de polietileno tereftalato termo-conformado para garantizar un peso reducido y un fácil reciclado de la bandeja y soporte una vez que han sido utilizados. Suficientemente que se ha descrito la invención, solamente resta señalar que las realizaciones derivadas de cambios de forma, dimensiones y similares, así como las resultantes de una aplicación de rutina de lo anteriormente revelado deberán considerarse incluidas en su ámbito de manera que la invención tan solo estará limitada por el alcance de las siguientes reivindicaciones . As shown by the figures, the culture tray is constituted by a quadrangular piece 1 having a flange 10 formed around a tray body 11 in which a plurality of culture vessels 12, for example, trunk-pyramidal, are configured. or inverted trunk-conics equal to each other that are open at the top and that are distributed evenly and adjacent to each other formed a grid-like structure. According to the invention, it is provided to provide a reinforcement support 2 in the form of a plate of lateral dimensions similar to those of the tray body 11 in which box-shaped receptacles 20 are provided equal to each other and with the same configuration and dimensions as the lower end of the culture vessels. As can be seen especially clearly through Figure 2, the culture vessels 12 inserted by their lower end 120 in the receptacles 20 of the reinforcement support and embedded therein. In this way, the tray and support assembly has an increased mechanical stability and rigidity that allow to support the loading of the tray with the cultivation substrate and the seedlings that are developing therein. It may be advantageous if the square piece and the reinforcement support are articulated to each other through a band or strip 3 formed integrally between a side of the perimeter flange 10 and a side of the reinforcement support. As shown in Figure 3, the square piece 1 and the reinforcement support 2, can be permanently joined forming a single piece through a joint 4, formed by heat welding and / or by gluing by means of a adhesive material How . mentioned above, both the quadrangular piece and the reinforcement support are made of thermoformed polyethylene terephthalate to ensure reduced weight and easy recycling of the tray and support once they have been used. Sufficiently that the invention has been described, it only remains to point out that the embodiments derived from changes in shape, dimensions and the like, as well as those resulting from a routine application of the above disclosed should be considered included in its scope so that the invention only will be limited by the scope of the following claims.

Claims

REIVINDICACIONES
1.- Bandeja desechable perfeccionada para cultivo de plantas constituida por una pieza cuadrangular (1) con un reborde perimetral (10) y cuerpo de bandeja (11) en el que están configurados una pluralidad de recipientes de cultivo (12) generalmente de forma tronco-piramidal o tronco cónica invertida e iguales entre sí que están abiertos por arriba y que se extienden hacia abajo, distribuidos adyacentemente de manera uniforme formando una retícula, caracterizada por cuanto: la pieza cuadrangular está constituida a base de polietileno tereftalato termo-conformado; está previsto un soporte de refuerzo (2), también a base de polietileno tereftalato termo- conformado, en forma de placa cuadrangular con una pluralidad de receptáculos (20) en forma de caja iguales entre sí y de configuración complementaria al extremo inferior (120) de los recipientes de cultivo para acoplamiento ajustado y encajado de este extremo inferior, de manera que cuando los recipientes de cultivo están encajados en los receptáculos del soporte de refuerzo, el conjunto presenta una estabilidad mecánica y rigidez aumentadas. 1.- Disposable tray perfected for plant cultivation consisting of a quadrangular piece (1) with a perimeter flange (10) and tray body (11) in which a plurality of culture containers (12) generally of trunk shape are configured - pyramidal or conical trunk inverted and equal to each other that are open from above and that extend downwards, distributed adjacently evenly forming a grid, characterized in that: the quadrangular piece is constituted based on thermoformed polyethylene terephthalate; a reinforcement support (2) is provided, also based on thermoformed polyethylene terephthalate, in the form of a quadrangular plate with a plurality of box-shaped receptacles (20) equal to each other and of complementary configuration to the lower end (120) of the culture vessels for tight fitting and fitting of this lower end, so that when the culture vessels are fitted in the receptacles of the reinforcement support, the assembly has increased mechanical stability and rigidity.
2.- Bandeja desechable perfeccionada para cultivo de plantas según la reivindicación 1, caracterizada por que la pieza cuadrangular (1) y el soporte de refuerzo (2) están articulados entre sí a través de una banda o tira (3) formada integralmente entre un lateral del reborde perimetral (10) de dicha pieza cuadrangular y un lateral de dicho soporte de refuerzo. 2. A perfected disposable tray for plant cultivation according to claim 1, characterized in that the square piece (1) and the reinforcement support (2) are articulated to each other through a band or strip (3) formed integrally between a side of the perimeter flange (10) of said quadrangular piece and one side of said reinforcement support.
3.- Bandeja desechable perfeccionada para cultivo de plantas, de acuerdo con una de las anteriores reivindicaciones, caracterizada por cuanto la pieza cuadrangular (1) y el soporte de refuerzo están unidas fijamente entre sí formando una sola pieza a través de una zona de inserción (4) de los recipientes de cultivo (12) en los receptáculos (20) del soporte de refuerzo. 3.- Disposable tray perfected for plant cultivation, according to one of the preceding claims, characterized in that the quadrangular piece (1) and the reinforcement support are fixedly joined together forming a single piece through an insertion zone (4) of the culture vessels (12) in the receptacles (20) of the reinforcement support.
4.- Bandeja desechable perfeccionada para cultivo de plantas, de acuerdo con la reivindicación 3, caracterizada por cuanto la unión en la zona de inserción4.- Improved disposable tray for plant cultivation, according to claim 3, characterized in that the union in the insertion zone
(4) está formada por termo-soldado y/o mediante encolado con material adhesivo. (4) It is formed by heat-welding and / or by gluing with adhesive material.
PCT/ES2005/000131 2004-04-01 2005-03-14 Plant cultivation tray comprising a lower fitted support WO2005094559A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESU200400802 2004-04-01
ES200400802U ES1057221Y (en) 2004-04-01 2004-04-01 PERFECTED DISPOSABLE TRAY FOR PLANTAIN CULTURE.

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Publication Number Publication Date
WO2005094559A1 true WO2005094559A1 (en) 2005-10-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009116959A1 (en) * 2008-03-18 2009-09-24 Cem Aktas A triple safe box system for production, transporting and stacking of seedlings
EP2324696A1 (en) * 2009-10-26 2011-05-25 Iakovos Tsonakis Plastic double tray system for mechanical seed sowing or seedling transplantation
US8707620B2 (en) * 2012-01-06 2014-04-29 Buckhorn, Inc. Seedling tray

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01118770A (en) * 1987-05-23 1989-05-11 Behringwerke Ag Method and reagent for measuring protein
EP0441422A1 (en) * 1990-02-08 1991-08-14 Polisette S.R.L. Germination tray
ES1039702U (en) * 1998-03-11 1999-01-01 Sancho Perez Jose Integrated tray for plant growing seedlings. (Machine-translation by Google Translate, not legally binding)

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01118770A (en) * 1987-05-23 1989-05-11 Behringwerke Ag Method and reagent for measuring protein
EP0441422A1 (en) * 1990-02-08 1991-08-14 Polisette S.R.L. Germination tray
ES1039702U (en) * 1998-03-11 1999-01-01 Sancho Perez Jose Integrated tray for plant growing seedlings. (Machine-translation by Google Translate, not legally binding)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009116959A1 (en) * 2008-03-18 2009-09-24 Cem Aktas A triple safe box system for production, transporting and stacking of seedlings
EP2324696A1 (en) * 2009-10-26 2011-05-25 Iakovos Tsonakis Plastic double tray system for mechanical seed sowing or seedling transplantation
US8707620B2 (en) * 2012-01-06 2014-04-29 Buckhorn, Inc. Seedling tray

Also Published As

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ES1057221Y (en) 2004-10-16
ES1057221U (en) 2004-07-01

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