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WO2013113096A1 - Method and apparatus for automated horticulture and agriculture - Google Patents

Method and apparatus for automated horticulture and agriculture Download PDF

Info

Publication number
WO2013113096A1
WO2013113096A1 PCT/CA2013/000084 CA2013000084W WO2013113096A1 WO 2013113096 A1 WO2013113096 A1 WO 2013113096A1 CA 2013000084 W CA2013000084 W CA 2013000084W WO 2013113096 A1 WO2013113096 A1 WO 2013113096A1
Authority
WO
WIPO (PCT)
Prior art keywords
section
growing
plants
trays
growth
Prior art date
Application number
PCT/CA2013/000084
Other languages
French (fr)
Inventor
Nicholas G. BRUSATORE
Original Assignee
Brusatore Nicholas G
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
Priority to KR1020147024014A priority Critical patent/KR20140124801A/en
Priority to AU2013214643A priority patent/AU2013214643A1/en
Priority to CN201380007321.8A priority patent/CN104202965A/en
Priority to EP13744374.3A priority patent/EP2809141A4/en
Priority to JP2014553587A priority patent/JP2015508636A/en
Priority to RU2014135376A priority patent/RU2014135376A/en
Application filed by Brusatore Nicholas G filed Critical Brusatore Nicholas G
Priority to CA2861881A priority patent/CA2861881C/en
Priority to MX2014009153A priority patent/MX2014009153A/en
Priority to US14/373,167 priority patent/US9854750B2/en
Publication of WO2013113096A1 publication Critical patent/WO2013113096A1/en
Priority to ZA2014/05989A priority patent/ZA201405989B/en
Priority to HK15105516.7A priority patent/HK1204861A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G31/00Soilless cultivation, e.g. hydroponics
    • A01G31/02Special apparatus therefor
    • A01G31/06Hydroponic culture on racks or in stacked containers
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/14Greenhouses
    • A01G9/1423Greenhouse bench structures
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25Greenhouse technology, e.g. cooling systems therefor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/21Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures

Definitions

  • the invention relates to the fields of horticulture and
  • the present invention provides a method and system for
  • the method utilizes one or more production lines each comprising a first and subsequent growth sections, each growth section comprising a plurality of horizontal transport levels, each level of each section having a source of light and liquid nutrient, and a plurality of growing trays which are adapted to move horizontally into, along and out of each one of said transport levels; whereby each subsequent growth section has a greater length than the previous section to thereby receive a greater number of growing trays than the previous section so that as plants grow in the growing trays, the number of plants per growing tray is decreased but the number of plants per growth section remains generally constant, the method comprising: i) planting a first group of said growing trays with seeds, the number of seeds planted in each tray being selected according to the type of plant, the size of trays, and the relative number and lengths of said growing sections;
  • each growing section comprises multi-level growing units, each independently controlled for light cycle and feeding and irrigation cycle and which may be computer operated so that the system can be programmed for different plants having differing growth cycles, without any changes to the configuration of the installation.
  • the invention further provides a system
  • the growing tray has an automatic filling and draining cycle which is regulated by a novel form of bell siphon.
  • the bell siphon uses a baffle having passages of variable diameter situated between the stand-up pipe and the bell so that the degree of vacuum can be selected and the timing of the fill and drain cycle selected as necessary.
  • Fig. 1 is a perspective view of an installation for carrying out the method of the invention
  • Fig. 2 is a perspective view of a single production line of the installation shown in Fig. 1 ;
  • Fig. 3 is a front right perspective view of a single unit of a production line of the installation shown in Fig. 2;
  • Fig. 4 is a left rear perspective view of a single unit of a production line of the installation shown in Fig. 2;
  • Fig. 5 is a detail of the perspective view shown in Fig. 4;
  • Fig. 6 is a detail of the perspective view shown in Fig. 3;
  • Fig. 7 is a further detail of the perspective view shown in Fig. 4;
  • Fig. 8 is a perspective view of a cleaning area of the
  • FIG. 9 is a top view of a germination tray with 16 seed flats
  • FIG. 10 is a perspective view of the germination tray shown in
  • FIG. 11 is a top view of a tray for the second stage with 165 pots
  • Fig. 12 is a perspective view of the tray shown in Fig. 11 ;
  • Fig. 13 is a top view of a tray for the third stage with 54 pots
  • Fig. 14 is a perspective view of the tray shown in Fig. 13;
  • Fig. 15 is a perspective view of the bell siphon used to
  • Fig. 16 is an exploded perspective view of a variant of the bell siphon shown in Fig. 15 with the outer housing in phantom outline for purposes of illustration;
  • Fig. 17 is a perspective view of the restrictor part of the bell siphon shown in Fig. 16 ;
  • Fig. 18 is a cross-section of the restrictor shown in Fig. 17 taken along lines A- A. Description
  • the installation 10 installed in a large building 12 such as a warehouse.
  • the installation 10 includes the growing and harvesting area 14, cropping and packaging area 16, cold storage 18, cleaning area 20, seeding area 21 and tank storage area 22.
  • the growing area comprises a plurality of production lines 24, one of which is shown in Fig. 2.
  • a conveyor 26 carries trays 80 from the production lines 24 through the cropping and packaging area 16 to the cleaning area 20.
  • each production line 24 comprises a germination section 28, a second stage growth section 30 and a third stage growth section 32.
  • each production line 24 will have one germination section unit 44, five second stage units 44 and fifteen third stage units 44.
  • Wheeled scissor lifts 34, 36 are provided between germination section 28 and second stage section 30, and between second stage section 30 and third stage section 32 respectively.
  • a third wheeled scissor lift 38 is provided to remove the finished product at the end of each production line 24.
  • Scissor lifts 34, 36 and 38 are motorized and move in the direction perpendicular to production lines along pathways 40, 42, 50 to permit the scissor lifts to service each production line 24.
  • Fig. 3 - 7 illustrate an individual unit 44 of a production line 24.
  • Each unit comprises a frame 46 forming a number of transport levels 48. In the embodiment shown, there are 11 transport levels 48 but a larger or smaller number can be provided depending on the desired size of the operation.
  • Each transport level comprises a plurality of parallel rollers 52 which are bearing mounted for rotation in transversely extending roller supports 54. Rollers 52 support the plant trays 80.
  • Each transport level also has a drainage trough 58 which drains into vertical drainage pipes 60 through
  • each transport level 48 On the underside of each transport level 48, and on the underside of top level 61 , are arrays 64 of fluorescent lamps 66, preferably 14 parallel 8 foot T8 High Output fluorescent lamps 66 per array 64. Preferably three arrays 64 on adjacent levels are controlled by a single remotely controlled electrical switch 68 connected by conductors 70. While fluorescent lamps are shown, other growth promoting lights can be used, such as light emitting diodes (LEDs), high pressure sodium lamps, metal halide lamps or incandescent light bulbs.
  • the electrical switches 68 are programmed to provide a
  • Liquid supply pipe 72 supplies liquid nutrient solution to the trays on each level through outlets 74. Each outlet is controlled by solenoid valves 76, which are electrically controlled by wireless controllers 78 to which they are connected by conductors 77. Liquid nutrient is delivered to the liquid supply pipe 72 from feed tanks 73, 75, 77 for each of stages 32, 30, 28 respectively. The liquid nutrient solution is mixed in batch tanks 63, 65, 67 for each of stages 28, 30, 32 respectively.
  • Plant trays 80 are preferably molded plastic trays 4 feet wide by 8 feet long, with 6-inch high side walls 82. Ramps 83 can be used to avoid splashing as the liquid flows to the bottom of the tray.
  • the pattern of channels 84, 86 in the upper inner surface of the trays 80 causes the nutrient solution to be equally distributed throughout the tray until it flows out the drainage holes 88 at the end of tray 80 opposite from the outlets 74.
  • a bell siphon 89 is used in the drainage hole 88, as illustrated in Fig. 15 - 18.
  • Bell siphon 89 comprises a stand-up pipe 100 having threaded ends 102, 104, O-ring 106, cylindrical enclosure 108, bell 110, annular collar 112 having holes 113 and retaining ring.
  • O-ring 106 sits in groove 107.
  • Stand-up pipe 100 is screwed into the drainage hole 88 by threaded end 102, with O-ring 106 thereby being compressed between stand-up pipe 100 and tray 80. Drainage hole 88 is connected to drainage trough 58 which drains into vertical drainage pipes 60 through connecting tubes 62.
  • Stand-up pipe 100 has a lower central cylindrical passage 114 and an upper cylindrical passage 116 with a greater diameter than the lower section and joined by a shoulder 115 having a beveled angle M.
  • Collar 112 threads onto threaded end 104 of stand-up pipe 100 and bears against shoulder 120 which is formed between the lower section 122 of bell 110 and the upper section 124 which has a smaller diameter.
  • Bell siphon 89 operates in the usual way to prevent the tray from filling to a higher level than the height of stand-up pipe 100, and periodically draining and refilling the tray by a siphon action.
  • Bell 110 is sized so that liquid from tray 80 is able to flow under the lower edge of bell 110 into the space between bell 110 and the stand-up pipe 100. As the tray fills, liquid flows through holes 113 and into the stand-up pipe 100 to flow through drainage hole 88.
  • collar 112 acts as a baffle to restrict the flow of liquid and by varying the number of holes 113 in collar 112 the length of time to fill the tray, and the length of time the tray will drain before the siphon is broken, can be varied. For example a collar with 6 holes of the same diameter as the 8-hole version shown can be substituted to cause the tray to fill and drain on a quicker schedule.
  • FIG. 9 and 10 show the tray 80 loaded with flats 81 of seeded germination pucks 83 for placement in the first germination stage 28.
  • Fig. 11 and 12 illustrate the tray 80 after the flats 81 of seeded germination pucks from the first germination stage have been broken out into pots 85 for placement in the second growth stage 30.
  • Fig. 13 and 14 illustrate the tray 80 after the pots 85 from the second growth stage 30 have been thinned out for the third growth stage 32.
  • trays 80 are planted with seeds in the seeding area 21.
  • the number of seeds planted in each tray will depend on the type of plant, with the goal being that after the plants have been broken out into the third stage of growth, each tray 80 will be sufficiently filled with grown plants. In the example below, for example, to arrive at a finished crop of 55 lettuce heads per tray after the third growing stage 32, for the germination stage each tray 80 will contain about 1680 germination pucks seeded with lettuce seeds.
  • each tray of seedlings is broken out into the number of trays required to fill the second stage section at that transport level, which in the embodiment shown is 5.
  • the breaking out onto additional trays and loading into the next section 30 is done manually on scissor lift 34. Once the entire section 30 has been loaded the plants are permitted to grow for a sufficient period of time until it is necessary to break them out again into a greater number of trays, 15 in the embodiment shown. This is done manually on scissor lift 36. Again the plants are left in section 32 until they are ready to harvest. Meanwhile sections 28 and 30 are filled and growing with a new crop. Once the plants in section 32 are sufficiently mature, the trays 80 are manually removed from each level onto scissor lift 38 and loaded onto conveyor 26.
  • Trays 80 then move to the cleaning section 20 where they are cleaned using washer 90 and drier 92 and returned to the seeding section where they are refilled with seeds.
  • the preferred liquid nutrient solution mixes are: i) a Bacterial Compost Tea mixed by, for each 20L of filtered water adding
  • the germination stage 28 seeds are planted into JiffyTM peat pucks 83 (preferably Item # 70000591), which are seed starting plugs, 105 peat pucks per each germination flat 81 (see Fig. 9).
  • the seeded puck trays 81 are saturated in the bacteria-dominated compost tea solution at 5.8 pH.
  • a humidity dome (not shown) is placed on top of each germination flat 81.
  • 16 germination flats 81 are placed in each tray 80 (see Fig. 9) and the tray is then loaded onto each level 48 of unit 44 in the germination section 28. Temperature is maintained at 69 degrees F and humidity at 72 % .
  • the light cycle photoperiod is set at 18 hours/On - 6 hours/Off.
  • the seeded flats are kept under humidity covers. On Day 5 the humidity covers are removed. On Day 7, the plants are sprayed with the full strength compost tea solution at 5.8 pH. For Days 7-15. the media is soaked once per day with a 400 ppm fertilizer solution at 5.8 pH. At Day 15 the Plants are transplanted into molded plastic pots 85 filled with 75 % BotanicareTM Cocogro ® Coir Fiber media to 25 % perlite. Botanicare ZHOTM Root Inoculant is added according to the label directions and also added is 1 tbsp dolomite lime per gallon of media saturated in the same compost tea mix used in the seeding process. Plants
  • the grow trays 80 are flooded once a day with the fertilizer solution at 540 ppm at 5.8 pH.
  • the media is saturated at 1 EC (electrical conductivity) and plants are sprayed with the full strength compost tea solution brewed as above at 5.8pH.
  • the Plants are then moved to the third stage section 32 and thinned to 55 plants (pots 85) per tray 80.
  • the temperature is maintained at 62 degrees F, humidity is maintained at 68 % and the light cycle is 18 hours On, 6 hours off.
  • the trays 80 are flooded twice a day with the nutrient solution at 640 ppm at 5.8 pH.
  • the Plants are harvested.
  • a continuous automated and controlled production of plants can be obtained.
  • Different lighting, temperatures, humidity and nutrition can be programmed for the different growth stages of a crop and also for different crops. This can be done remotely by computer.
  • the installation can quickly change from producing one crop to another if demand for a crop and pricing are changing quickly.
  • the land space required to produce a crop is dramatically reduced and can be further reduced by increasing the height of the growing units 44.
  • the entire process can be automated using robots to transfer the plants at different stages.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Botany (AREA)
  • Hydroponics (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Cultivation Of Plants (AREA)

Abstract

A method and system for continuous automated growing of plants utilizes production lines each comprising a number of growth sections, each growth section comprising multiple horizontal transport levels, each level of each section having a source of light and liquid nutrient, and plant growing trays which move horizontally into, along and out of each transport level; whereby each subsequent growth section has a greater length than the previous section to receive a greater number of growing trays than the previous section so that as plants grow, the number of plants per growing tray is decreased but the number of plants per growth section remains constant. A group of plants is thereby broken out into an ever greater number of trays as it proceeds through the growing sections from germination to harvest, with the ability to simultaneously start the growth cycle for additional crops.

Description

METHOD AND APPARATUS FOR AUTOMATED
HORTICULTURE AND AGRICULTURE
Cross Reference To Related Application
[0001] The present application claims the benefits, under 35
U.S.C.§119(e), of U.S. Provisional Application Serial No.
61/592,338 filed January 30, 2012 entitled "Method and
Apparatus for Automated Horticulture and Agriculture" which is incorporated herein by this reference
Technical Field
[0002] The invention relates to the fields of horticulture and
agriculture and particularly apparatus and methods for automated commercial growth and production of plants in controlled environments.
Background
[0003] Traditionally the commercial horticultural and agricultural growth of plants has been carried out in nurseries and greenhouses, where the plants are arranged horizontally and are stationary. More efficient methods have more recently been developed, some of which are referred to as 'vertical farming' . The present inventor, for example, in United States patents 7415796, 7533494, 7559173, 7818917 and 7984586 disclosed methods of growing plants using a rotating vertical carousel of rotating spheres, each having a central light source around which rows of plants are rotated, to thereby increase the productivity of plant growth in a given area. However harvesting of mature plants from such systems can be complicated and time consuming.
[0004] The foregoing examples of the related art and limitations
related thereto are intended to be illustrative and not exclusive. Other limitations of the related art will become apparent to those of skill in the art upon a reading of the specification and a study of the drawings.
Summary
[0005] The following embodiments and aspects thereof are described and illustrated in conjunction with systems, tools and methods which are meant to be exemplary and illustrative, not limiting in scope. In various embodiments, one or more of the above-described problems have been reduced or eliminated, while other embodiments are directed to other improvements.
[0006] The present invention provides a method and system for
continuous automated growing of plants. The method utilizes one or more production lines each comprising a first and subsequent growth sections, each growth section comprising a plurality of horizontal transport levels, each level of each section having a source of light and liquid nutrient, and a plurality of growing trays which are adapted to move horizontally into, along and out of each one of said transport levels; whereby each subsequent growth section has a greater length than the previous section to thereby receive a greater number of growing trays than the previous section so that as plants grow in the growing trays, the number of plants per growing tray is decreased but the number of plants per growth section remains generally constant, the method comprising: i) planting a first group of said growing trays with seeds, the number of seeds planted in each tray being selected according to the type of plant, the size of trays, and the relative number and lengths of said growing sections;
ii) introducing said first group of seeded trays into the first growing section;
iii) after a sufficient germination period, transplanting the first group of plants from the first group of trays into a greater number of trays able to be received in the next subsequent growing section;
iv) introducing the trays containing the first group of plants into the first subsequent growing section;
v) introducing a second group of seeded trays into the first growing section;
vi) after the first group of plants have grown for a sufficient period of time in said first subsequent section, transferring the first group of plants again into a greater number of trays able to be received in the next subsequent growing section;
vii) introducing the trays containing the first group of plants into the next subsequent growing section;
viii) transplanting the second group of plants from the second group of trays into a greater number of trays able to be received in the next subsequent growing section;
ix) introducing the trays containing the second group of plants into the next subsequent growing section;
x) repeating steps i) through ix) mutatis mutandis for the first, second and subsequent groups of plants from the first, second and subsequent groups of seeded trays;
xi) once the plants in a group of trays are in the final subsequent growth section and are ready to harvest, removing the group of trays from the final growth section and
harvesting said plants. According to one aspect of the invention each growing section comprises multi-level growing units, each independently controlled for light cycle and feeding and irrigation cycle and which may be computer operated so that the system can be programmed for different plants having differing growth cycles, without any changes to the configuration of the installation. The invention further provides a system
constructed to carry out the foregoing method and a growing tray specially designed for horizontal movement on rollers within the multi-level growing units. The growing tray has an automatic filling and draining cycle which is regulated by a novel form of bell siphon. The bell siphon uses a baffle having passages of variable diameter situated between the stand-up pipe and the bell so that the degree of vacuum can be selected and the timing of the fill and drain cycle selected as necessary. ] In addition to the exemplary aspects and embodiments
described above, further aspects and embodiments will become apparent by reference to the drawings and by study of the following detailed descriptions.
Description of Drawings
Exemplary embodiments are illustrated in referenced figures of the drawings. It is intended that the embodiments and figures disclosed herein are to be considered illustrative rather than restrictive.
Fig. 1 is a perspective view of an installation for carrying out the method of the invention;
Fig. 2 is a perspective view of a single production line of the installation shown in Fig. 1 ;
Fig. 3 is a front right perspective view of a single unit of a production line of the installation shown in Fig. 2;
Fig. 4 is a left rear perspective view of a single unit of a production line of the installation shown in Fig. 2;
Fig. 5 is a detail of the perspective view shown in Fig. 4; Fig. 6 is a detail of the perspective view shown in Fig. 3; Fig. 7 is a further detail of the perspective view shown in Fig. 4;
Fig. 8 is a perspective view of a cleaning area of the
installation shown in Fig. 1 ; [00018] Fig. 9 is a top view of a germination tray with 16 seed flats;
[00019] Fig. 10 is a perspective view of the germination tray shown in
Fig. 9;
[00020] Fig. 11 is a top view of a tray for the second stage with 165 pots;
[00021] Fig. 12 is a perspective view of the tray shown in Fig. 11 ;
[00022] Fig. 13 is a top view of a tray for the third stage with 54 pots;
[00023] Fig. 14 is a perspective view of the tray shown in Fig. 13;
[00024] Fig. 15 is a perspective view of the bell siphon used to
regulate drainage from the trays, with the outer housing in phantom outline for purposes of illustration;
[00025] Fig. 16 is an exploded perspective view of a variant of the bell siphon shown in Fig. 15 with the outer housing in phantom outline for purposes of illustration;
[00026] Fig. 17 is a perspective view of the restrictor part of the bell siphon shown in Fig. 16 ; and
[00027] Fig. 18 is a cross-section of the restrictor shown in Fig. 17 taken along lines A- A. Description
[00028] Throughout the following description specific details are set forth in order to provide a more thorough understanding to persons skilled in the art. However, well known elements may not have been shown or described in detail to avoid unnecessarily obscuring the disclosure. Accordingly, the description and drawings are to be regarded in an illustrative, rather than a restrictive, sense.
[00029] With reference to Fig. 1 , an installation for automated
cultivation and harvesting of plants is designated generally as
10, installed in a large building 12 such as a warehouse. The installation 10 includes the growing and harvesting area 14, cropping and packaging area 16, cold storage 18, cleaning area 20, seeding area 21 and tank storage area 22. The growing area comprises a plurality of production lines 24, one of which is shown in Fig. 2. A conveyor 26 carries trays 80 from the production lines 24 through the cropping and packaging area 16 to the cleaning area 20.
With reference to Fig. 2, each production line 24 comprises a germination section 28, a second stage growth section 30 and a third stage growth section 32. Preferably each production line 24 will have one germination section unit 44, five second stage units 44 and fifteen third stage units 44. Wheeled scissor lifts 34, 36 are provided between germination section 28 and second stage section 30, and between second stage section 30 and third stage section 32 respectively. A third wheeled scissor lift 38 is provided to remove the finished product at the end of each production line 24. Scissor lifts 34, 36 and 38 are motorized and move in the direction perpendicular to production lines along pathways 40, 42, 50 to permit the scissor lifts to service each production line 24.
Fig. 3 - 7 illustrate an individual unit 44 of a production line 24. Each unit comprises a frame 46 forming a number of transport levels 48. In the embodiment shown, there are 11 transport levels 48 but a larger or smaller number can be provided depending on the desired size of the operation. Each transport level comprises a plurality of parallel rollers 52 which are bearing mounted for rotation in transversely extending roller supports 54. Rollers 52 support the plant trays 80. Each transport level also has a drainage trough 58 which drains into vertical drainage pipes 60 through
connecting tubes 62. On the underside of each transport level 48, and on the underside of top level 61 , are arrays 64 of fluorescent lamps 66, preferably 14 parallel 8 foot T8 High Output fluorescent lamps 66 per array 64. Preferably three arrays 64 on adjacent levels are controlled by a single remotely controlled electrical switch 68 connected by conductors 70. While fluorescent lamps are shown, other growth promoting lights can be used, such as light emitting diodes (LEDs), high pressure sodium lamps, metal halide lamps or incandescent light bulbs. The electrical switches 68 are programmed to provide a
coordinated light cycle (photoperiod) for the plants at each growth stage and depending on the particular plant.
Liquid supply pipe 72 supplies liquid nutrient solution to the trays on each level through outlets 74. Each outlet is controlled by solenoid valves 76, which are electrically controlled by wireless controllers 78 to which they are connected by conductors 77. Liquid nutrient is delivered to the liquid supply pipe 72 from feed tanks 73, 75, 77 for each of stages 32, 30, 28 respectively. The liquid nutrient solution is mixed in batch tanks 63, 65, 67 for each of stages 28, 30, 32 respectively.
Plant trays 80 are preferably molded plastic trays 4 feet wide by 8 feet long, with 6-inch high side walls 82. Ramps 83 can be used to avoid splashing as the liquid flows to the bottom of the tray. The pattern of channels 84, 86 in the upper inner surface of the trays 80 causes the nutrient solution to be equally distributed throughout the tray until it flows out the drainage holes 88 at the end of tray 80 opposite from the outlets 74. To maintain the liquid in the trays at the proper level, prevent overflow and periodically drain trays 80, preferably a bell siphon 89 is used in the drainage hole 88, as illustrated in Fig. 15 - 18. Bell siphon 89 comprises a stand-up pipe 100 having threaded ends 102, 104, O-ring 106, cylindrical enclosure 108, bell 110, annular collar 112 having holes 113 and retaining ring. O-ring 106 sits in groove 107. Stand-up pipe 100 is screwed into the drainage hole 88 by threaded end 102, with O-ring 106 thereby being compressed between stand-up pipe 100 and tray 80. Drainage hole 88 is connected to drainage trough 58 which drains into vertical drainage pipes 60 through connecting tubes 62. Stand-up pipe 100 has a lower central cylindrical passage 114 and an upper cylindrical passage 116 with a greater diameter than the lower section and joined by a shoulder 115 having a beveled angle M.
Collar 112 threads onto threaded end 104 of stand-up pipe 100 and bears against shoulder 120 which is formed between the lower section 122 of bell 110 and the upper section 124 which has a smaller diameter. Bell siphon 89 operates in the usual way to prevent the tray from filling to a higher level than the height of stand-up pipe 100, and periodically draining and refilling the tray by a siphon action.
Bell 110 is sized so that liquid from tray 80 is able to flow under the lower edge of bell 110 into the space between bell 110 and the stand-up pipe 100. As the tray fills, liquid flows through holes 113 and into the stand-up pipe 100 to flow through drainage hole 88. Thus collar 112 acts as a baffle to restrict the flow of liquid and by varying the number of holes 113 in collar 112 the length of time to fill the tray, and the length of time the tray will drain before the siphon is broken, can be varied. For example a collar with 6 holes of the same diameter as the 8-hole version shown can be substituted to cause the tray to fill and drain on a quicker schedule.
[00037] Fig. 9 and 10 show the tray 80 loaded with flats 81 of seeded germination pucks 83 for placement in the first germination stage 28. Fig. 11 and 12 illustrate the tray 80 after the flats 81 of seeded germination pucks from the first germination stage have been broken out into pots 85 for placement in the second growth stage 30. Fig. 13 and 14 illustrate the tray 80 after the pots 85 from the second growth stage 30 have been thinned out for the third growth stage 32.
[00038] In operation trays 80 are planted with seeds in the seeding area 21. The number of seeds planted in each tray will depend on the type of plant, with the goal being that after the plants have been broken out into the third stage of growth, each tray 80 will be sufficiently filled with grown plants. In the example below, for example, to arrive at a finished crop of 55 lettuce heads per tray after the third growing stage 32, for the germination stage each tray 80 will contain about 1680 germination pucks seeded with lettuce seeds. Once the trays 80 are loaded with the flats of seeded pucks they are transported to the germination section 28 on scissor lifts. [00039] After a sufficient germination period, each tray of seedlings is broken out into the number of trays required to fill the second stage section at that transport level, which in the embodiment shown is 5. The breaking out onto additional trays and loading into the next section 30 is done manually on scissor lift 34. Once the entire section 30 has been loaded the plants are permitted to grow for a sufficient period of time until it is necessary to break them out again into a greater number of trays, 15 in the embodiment shown. This is done manually on scissor lift 36. Again the plants are left in section 32 until they are ready to harvest. Meanwhile sections 28 and 30 are filled and growing with a new crop. Once the plants in section 32 are sufficiently mature, the trays 80 are manually removed from each level onto scissor lift 38 and loaded onto conveyor 26. The trays are then taken to the cropping and packaging section 16 where the plants are manually removed and packaged and stored in cold storage 18. Trays 80 then move to the cleaning section 20 where they are cleaned using washer 90 and drier 92 and returned to the seeding section where they are refilled with seeds.
Example - Romaine Lettuce
[00040] An example of application of the invention to the production of Romaine lettuce is described as follows. The preferred liquid nutrient solution mixes are: i) a Bacterial Compost Tea mixed by, for each 20L of filtered water adding
1.5 pounds (700g) bacterial compost or vermicompost 3-4 tablespoons (45 -60ml) liquid black strap molasses
4 teaspoons (23g) dry soluble kelp or 2 tablespoons of liquid kelp
3-4 teaspoons (15-20ml) fish emulsion ii) as a fertilizer/nutrient solution, PURA VIDA™ GROW produced by Technaflora Plant Products of Mission BC, Canada. EDTA Iron is added at 20 ppm to the final solution. 1 gallon of compost tea is added for each 50 gallons of the feed solution with each new batch mixture.
In the Stage 1, the germination stage 28, seeds are planted into Jiffy™ peat pucks 83 (preferably Item # 70000591), which are seed starting plugs, 105 peat pucks per each germination flat 81 (see Fig. 9). The seeded puck trays 81 are saturated in the bacteria-dominated compost tea solution at 5.8 pH. A humidity dome (not shown) is placed on top of each germination flat 81. 16 germination flats 81 are placed in each tray 80 (see Fig. 9) and the tray is then loaded onto each level 48 of unit 44 in the germination section 28. Temperature is maintained at 69 degrees F and humidity at 72 % . For lighting, the light cycle (photoperiod) is set at 18 hours/On - 6 hours/Off. During Days 1-4 the seeded flats are kept under humidity covers. On Day 5 the humidity covers are removed. On Day 7, the plants are sprayed with the full strength compost tea solution at 5.8 pH. For Days 7-15. the media is soaked once per day with a 400 ppm fertilizer solution at 5.8 pH. At Day 15 the Plants are transplanted into molded plastic pots 85 filled with 75 % Botanicare™ Cocogro® Coir Fiber media to 25 % perlite. Botanicare ZHO™ Root Inoculant is added according to the label directions and also added is 1 tbsp dolomite lime per gallon of media saturated in the same compost tea mix used in the seeding process. Plants
are spaced at 165 pots per growing tray 80 (See Fig. 11 , 12) and placed onto each level 48 of unit 44 in the second stage section 30. For the second stage, the temperature is
maintained at 62 degrees F, the humidity is maintained at 68 % and the light cycle is kept at 18 hours On, 6 hours Off. At days 15-30, the grow trays 80 are flooded once a day with the fertilizer solution at 540 ppm at 5.8 pH. At Day 30, the media is saturated at 1 EC (electrical conductivity) and plants are sprayed with the full strength compost tea solution brewed as above at 5.8pH. The Plants are then moved to the third stage section 32 and thinned to 55 plants (pots 85) per tray 80. In the third stage section 32, the temperature is maintained at 62 degrees F, humidity is maintained at 68 % and the light cycle is 18 hours On, 6 hours off. From Days 30 - 45, the trays 80 are flooded twice a day with the nutrient solution at 640 ppm at 5.8 pH. At Day 45 the Plants are harvested.
Thus using the invention, a continuous automated and controlled production of plants can be obtained. Different lighting, temperatures, humidity and nutrition can be programmed for the different growth stages of a crop and also for different crops. This can be done remotely by computer. Thus the installation can quickly change from producing one crop to another if demand for a crop and pricing are changing quickly. The land space required to produce a crop is dramatically reduced and can be further reduced by increasing the height of the growing units 44. The entire process can be automated using robots to transfer the plants at different stages.
While a number of exemplary aspects and embodiments have been discussed above, those of skill in the art will recognize certain modifications, permutations, additions and
sub-combinations thereof. It is therefore intended that the invention be interpreted to include all such modifications, permutations, additions and sub-combinations as are within their true spirit and scope.

Claims

WHAT IS CLAIMED IS:
1. A method for continuous automated growing of plants utilizing a production line comprising first and subsequent growth sections, each growth section comprising a plurality of horizontal transport levels, each level of each section having a controlled source of light and liquid nutrient, and a plurality of growing trays which are adapted to move horizontally into, along and out of each one of said transport levels; whereby each subsequent growth section has a greater length than the previous section to thereby receive a greater number of growing trays than the previous section so that as plants grow in said growing trays, the number of plants per growing tray is decreased but the number of plants per growth section remains generally constant, the method comprising:
i) planting a first group of said growing trays with seeds, the number of seeds planted in each tray being selected according to the type of plant, the size of trays, and the relative number and lengths of said growing sections;
ii) introducing said first group of seeded trays into said first growing section;
iii) after a sufficient germination period, transplanting the first group of plants from the first group of trays into a greater number of trays able to be received in the next subsequent growing section;
iv) introducing the trays containing the first group of plants into said first subsequent growing section;
v) introducing a second group of seeded trays into the first growing section;
vi) after the first group of plants have grown for a sufficient period of time in said first subsequent section, transferring said first group of plants again into a greater number of trays able to be received in the next subsequent growing section; vii) introducing the trays containing the first group of plants into the next subsequent growing section;
viii) transplanting the second group of plants from the second group of trays into a greater number of trays able to be received in the next subsequent growing section;
ix) introducing the trays containing the second group of plants into the next subsequent growing section;
x) repeating steps i) through ix) mutatis mutandis for the first, second and subsequent groups of plants from the first, second and subsequent groups of seeded trays;
xi) once the plants in a group of trays are in the final subsequent growth section and are ready to harvest, removing the group of trays from said final growth section and
harvesting said plants.
The method of claim 1 wherein the number of growth sections is selected to correspond to a number of stages of equal duration in the growing process of the plants in question, so that when one crop of plants is ready to be harvested from the last of said subsequent sections, the subsequent crops are each ready to move into their next growth stage.
The method of claim 1 wherein each plant moves from a growing sections to the subsequent growing section at the same horizontal level as the plant occupied in the previous growing section.
The method of claim 1 wherein the plants are harvested by
transferring the trays containing the plants to a cropping and packaging section where the plants are removed from the trays and packaged.
5. The method of claim 4 wherein said trays are then cleaned and returned to the seeding section where they are refilled with seeds.
6. The method of claim 1 wherein each production line comprises a germination section, one or more second stage growth sections and a final stage growth section.
7. The method of claim 1 wherein each growth section comprises one or more multi-level growth units, each level of each unit being sized to receive one of said growth trays on each level.
8. The method of claim 1 wherein lifting devices are provided between growth sections top facilitate re-planting.
9. The method of claim 1 wherein a lifting device is provided to move between different horizontal levels to remove the finished product at the end of each production line.
10. The method of claim 7 wherein each growth unit is independently controlled for its light cycle and feeding and irrigation cycle whereby different plants having differing growth cycles are grown without changes to the configuration of the production line.
11. A system for continuous automated growing of plants, comprising a production line comprising a first and subsequent growth sections, each growth section comprising a plurality of horizontal transport levels, each level of each section having a source of light and liquid nutrient, and a plurality of growing trays which are adapted to move horizontally into, along and out of each one of said transport levels; whereby each subsequent growth section has a greater length than the previous section to thereby receive a greater number of growing trays than the previous section so that as plants grow in said growing trays, the number of plants per growing tray is decreased but the number of plants per growth section remains generally constant.
12. The system of claim 11 wherein the number of growth sections is selected to correspond to a number of stages of equal duration in the growing process of the plants in question, so that when one crop of plants is ready to be harvested from the last of said subsequent sections, the subsequent crops are each ready to move into their next growth stage.
13. The system of claim 11 comprising multiple production lines.
14. The system of claim 11 wherein each growth section comprises one or more multi-level growth units, each level of each unit being sized to receive one of said growth trays on each level.
15. The system of claim 14 wherein each growth unit is independently controlled for its light cycle and feeding and irrigation cycles which are computer controlled so that the system can be programmed for different plants having differing growth cycles, without any changes to the configuration of the production line.
16. The system of claim 11 wherein said growing tray comprises a
lower surface specially designed for horizontal movement on rollers provided on each said transport level.
17. The system of claim 11 wherein the growing tray has an automatic filling and draining cycle which is regulated by a bell siphon.
18. The system of claim 17 wherein said bell siphon comprises a baffle having passages of variable diameter situated between a stand-up pipe and a bell so that the degree of vacuum and the timing of the fill and drain cycle can be variably selected.
19. A plant growing tray for use in an automated horticultural
production line comprising side walls, a bottom surface adapted for horizontal movement on rollers and an open top and a drainage hole in the bottom surface adjacent one end thereof, wherein the upper surface of said bottom comprises a pattern of channels causing liquid nutrient solution to be equally distributed throughout the tray until it flows out said drainage hole.
20. The plant growing tray of claim 19 wherein the growing tray has an automatic filling and draining cycle which is regulated by a bell siphon.
21. The plant growing tray of claim 19 wherein said bell siphon
comprises a baffle having passages of variable diameter situated between a stand-up pipe and a bell so that the degree of vacuum and the timing of the fill and drain cycle can be variably selected.
PCT/CA2013/000084 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture WO2013113096A1 (en)

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AU2013214643A AU2013214643A1 (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture
CN201380007321.8A CN104202965A (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture
EP13744374.3A EP2809141A4 (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture
JP2014553587A JP2015508636A (en) 2012-01-30 2013-01-30 Methods and equipment for automated horticulture and agriculture
RU2014135376A RU2014135376A (en) 2012-01-30 2013-01-30 METHOD AND DEVICE FOR AUTOMATED GARDENING AND AGRICULTURE
KR1020147024014A KR20140124801A (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture
CA2861881A CA2861881C (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture
MX2014009153A MX2014009153A (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture.
US14/373,167 US9854750B2 (en) 2012-01-30 2013-01-30 Method and apparatus for automated horticulture and agriculture
ZA2014/05989A ZA201405989B (en) 2012-01-30 2014-08-15 Method and apparatus for automated horticulture and agriculture
HK15105516.7A HK1204861A1 (en) 2012-01-30 2015-06-10 Method and apparatus for automated horticulture and agriculture

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EP2809141A4 (en) 2016-06-15
US20140366443A1 (en) 2014-12-18

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