WO1992003907A1 - Systeme de manipulation de plantes - Google Patents

Systeme de manipulation de plantes Download PDF

Info

Publication number
WO1992003907A1
WO1992003907A1 PCT/FI1991/000270 FI9100270W WO9203907A1 WO 1992003907 A1 WO1992003907 A1 WO 1992003907A1 FI 9100270 W FI9100270 W FI 9100270W WO 9203907 A1 WO9203907 A1 WO 9203907A1
Authority
WO
WIPO (PCT)
Prior art keywords
honeycomb
pots
ball
balls
plant
Prior art date
Application number
PCT/FI1991/000270
Other languages
English (en)
Inventor
Kim Murmann
Original Assignee
Lännen Tehtaat Oy
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 Lännen Tehtaat Oy filed Critical Lännen Tehtaat Oy
Priority to AU84166/91A priority Critical patent/AU8416691A/en
Publication of WO1992003907A1 publication Critical patent/WO1992003907A1/fr

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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/08—Devices for filling-up flower-pots or pots for seedlings; Devices for setting plants or seeds in pots
    • A01G9/086—Devices for repotting
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/02—Transplanting machines for seedlings
    • A01C11/025—Transplanting machines using seedling trays; Devices for removing the seedlings from the trays

Definitions

  • the invention relates to the growing of plants in honeycombs. It is known to grow plants in honeycombs, the bottoms cell of which are open. Thus balled seedlings can be removed from honeycombs by pushing them from the bottom towards the opening.
  • FI 874803 (corresponds to US-patent 4893571) it is known an equipment, whereby balls are pushed from these kind of honeycombs to a horizontal gripping device with two tines, after which the gripping device is turned downwards and the ball is removed and transferred to substrate.
  • the plant balls are taken out of the pots by means of a gripping device fastened to a circulating conveyor.
  • the conveyor is preferably a vertically circulating belt in which there are several gripping devices.
  • the gripping device preferably comprises at least one, preferably two, tines to which the plant ball is pushed.
  • the supporting means comprises preferably at least one spring pressing the ball. The spring will absorb vibrations which might break the ball.
  • the plant balls can be transferred especially into empty pots in a second honeycomb from which balls containing no proper plant have been removed.
  • the cells of the first honeycomb may comprise preferably an inner pot of decaying material.
  • Fig. 1 shows a honeycomb for growing plants
  • Fig. 2 shows photographing system for recognizing balls containing no seedlings
  • Fig. 3 shows graphics system for recognizing balls containing no seedlings
  • Fig. 4 shows equipment for removing balls containing no seedlings from the honeycomb
  • Fig. 5 shows equipment for bringing balled seedlings into empty pots in the honeycomb in side view
  • Fig. 6 shows the equipment according to Fig. 5 from behind
  • Fig. 7 shows a rod for pushing balls from the honeycomb
  • Fig. 8 shows a total system for handling plants in a side view
  • Fig. 9 shows the system of Fig. 8 from above
  • Fig. 10 shows the pushing of a ball to a gripping device
  • Fig. 11 shows the gripping device of Fig. 10 with a ball in front view
  • Fig. 12 shows the gripping device of Fig. 11 in a side view.
  • honeycombs for plants are used, which honeycombs consist of one longitudinal row of pots or of several longitudinal rows of pots.
  • the pots are preferably open both in the opening and in the bottom and narrowing towards the bottom.
  • the most suitable is a honeycomb consisting of pots fixed firmly together, which honeycomb is reusable.
  • the invention is described as an embodiment in connection with this kind of 12 x 12 honeycomb (e.g. PLANTEK R 144) .
  • Empty pots are first filled with substrate (e.g. horticultural peat) , seeds are sown in the pots, after which the seeds are germinated and the plants are grown under the circumstances desired.
  • the surface After sowing the surface can be, if desired, covered by a layer (e.g. by vermiculite) protecting the germinating procedure.
  • a layer e.g. by vermiculite
  • a substrate In order for the balled seedling to remain undamaged during the transfer, a substrate should be used, which together with the rootage forms a ball firm enough.
  • a suitable agent for binding the ball can be used if desired in the substrate.
  • separate inner pots 2 are used in honeycombs 1, which inner pots are made of a material decaying under the growing circumstances and are placed in the honeycomb before taken it into use (Fig. 1) .
  • the inner pots can be separate or they can form e.g. a sheet corresponding to the honeycomb, in which case the inner pots are cut separate off the sheet when needed.
  • material for the inner pots can be used e.g. peat or suitable paper.
  • the inner pot forms a protecting binding layer on the ball surface in order to prevent it from breaking. Thickness of the inner pot is chosen in a manner, that the inner pot prevents the ball from breaking in growing phases and during the transfers in the final planting in case, when the rootage of the plant does not bind the ball enough, but that the inner pot, however, does not prevent rooting of the seedling planted. When the plants are allowed to grow in the pots for a relative long time, the rootage binds the ball to be firm.
  • inner pot there is no need for the inner pot to bind the ball but during possible transfers in the initial phase.
  • an inner pot is chosen, decaying time of which is the most suitable in case in question.
  • inner pots also advantage of other kind is achieved: by using an inner pot plenty of prongy root ends are formed on the outer surface of the ball during the growing, which root ends forward the rooting of the plant in the final habitat. Further when the inner pots are used, it might not be necessary to send the reusable honeycombs to the customer.
  • the balls containing no plant are recognized by a camera and by digital graphics attached to it.
  • FIGs 2 and 3 show a system for recognizing plants in schematical representation.
  • the entire honeycomb 1 containing plants is photographed from above by a camera 3.
  • the photographing is carried out in a phase as early as possible, when leaves of the plants do not yet extend sidewards over the edges of their own pots but all plants in germ however are in seedling phase. Depending on the plant and circumstances the germinating period needed is approx. 6-15 days.
  • the photograph is treated and brought into digital form by a graphic system 4.
  • the photograph of the honeycomb 1 consisting of pots 5 is divided into squares 6 corresponding to the separate pots (Fig. 3) .
  • In the photo of each square a green 7 and a non-green area 8 is separated.
  • the digital graphics system 4 also consists of a monitor 11, with which the original or the digitized picture can be followed.
  • the monitor helps in finding suitable set values. It also helps in observing factors (e.g. unequal sowing or germinating circumstances) causing systematically errors in sowing or germinating phase.
  • the honeycomb 1 is placed in a cupboard 12 protected from the light outside, which cupboard is illuminated by lamps 13.
  • the illuminating conditions can thus be optimized.
  • UV light is used for illuminating, which UV light excites the living green leaves of the plant to emit fluorescence radiation, which fluorescence radiation is then detected by the camera 3.
  • the empty balls are removed from the honeycomb especially by blowing.
  • the honeycomb 1 is transferred in an oblique position on its side by a synchronized conveyor 14.
  • the information of balls containing no plant is achieved through the channel 10 into the control unit 15 in the removing system.
  • the removing itself is carried out by air blowing system 16.
  • air blowing system 16 In this system there is a row of nozzles, in which there is a nozzle 17 beneath each pot 5 in the row, through which nozzle a compressed-air jet can be directed.
  • the control system alerts the blowing system.
  • a valve in the nozzle in question opens for a time desired, and the ball is thrown out off the pot.
  • pesticides can be added in the shower as well, in order to eliminate the possible pathogenic agents remaining in the pot from a sick plant.
  • plants are transferred from the honeycomb into another substrate, especially to another honeycomb from which the balls containing no good plant have been removed. This is described referring to Fig. 5 and 6.
  • a rotating belt 17 In the equipment there is a rotating belt 17, in which there are gripping devices 18 with tines facing perpendicularily outwards from the belt.
  • the belt rotates around a top wheel 19 and a bottom wheel 20. (In Fig. 5 and 6 only part of the belt can be seen.) Spacing between the gripping devices on the belt is the same as the spacing between the pots in the honeycomb 1.
  • Balled seedlings are brought from the honeycomb 1 row by row to the gripping devices 18 by pushing the balls from the bottom by a pushing device, in which there is a rod 21 for each honeycomb.
  • the honeycomb is on its edge and slightly tilted backwards, in order for the balls not to fall by themselves.
  • the part of the belt, which meets the row of pots, is correspondingly parallel with the row of pots. During the pushing the belt does not move. After the row of balls has been pushed in tines of the gripping devices, the belt moves forward (in Fig. 5 counterclockwise) .
  • a new row of balls is brought in front of the pushing device, and when the belt has rotated by one row, the belt is stopped and a new row of balls is pushed into the tines.
  • the belt In the end of each rod 21 there are two tines 22, which penetrate into the ball from its bottom side and thus prevent it from twisting or turning during the pushing.
  • Fig. 7 shows a rod in end view in enlarged scale.
  • the gripping device 18 there are two parallel tines for preventing the ball from twisting.
  • the tines are placed in a line parallel with the belt 17.
  • the tines are equipped with barbs.
  • the ball is released from the gripping device 18 in its bottom position.
  • the ball is released by pushing it from top of the gripping device with help of a pushing device for releasing 23.
  • a pushing device for releasing 23 There are two feet in the pushing device, which settle on the opposite sides of the ball.
  • the pushing device is run by a pneumatic cylinder 24.
  • Movement for the belt 17 is transmitted from a wheel 25 continuously rotated by a motor through a transmission gear 26 and the top wheel 19.
  • the transmission gear can be lifted apart of the top wheel, whereby the movement of the top wheel and the belt stops.
  • An exact stopping of the top wheel is secured by a brake shoe 27, which presses against the top wheel at the same time when the transmission gear releases from the top wheel.
  • Releasing of the transmission gear and simultaneous braking of the top wheel is realized by a pneumatic cylinder 28 and a lever mechanism 29.
  • the positional detector 30 which detects the incoming pot and an identifying detector 31, which detects whether the pot possibly is empty.
  • the positional detector is exactly a multiple of certain spacing of pots away from the releasing point of the ball.
  • the detectors are connected to a control system controlling the transferring of the honeycomb and releasing of the balled seedling.
  • the equipment also consists of a controlling detector 33, which controls if there is a ball in the gripping device coming next to the releasing point. If that is not the case, the belt 17 is rotated further until there is a ball coming to the releasing point. It is thus possible to bring balls to the gripping devices 18 also from a shorthanded honeycomb 1, e.g. a such, from which the balls containing no plant have been removed. And if the ball releases by accident too early, there will still not be any empty pots in the honeycomb 1.1.
  • the honeycomb 1.1 is moved stepwise by means of a wheel 34, on the circle of which there are rods parallel with the axle of the wheel. The spacing of the rods is the same as the spacing of the pots of the honeycomb.
  • the pots are always placed exactly at the right position beneath the pushing device 23.
  • the honeycombs 1 from which the plants are transferred it is preferable to use such inner pots as described in Fig. 1 in order to avoid breaking of the balls during the transfer.
  • Each belt 17 can have its own row of pushing rods 21 or also one row or several rows of pivots movable in crossward direction can be used.
  • Fig. 6 there are shown also supporting means for the ball.
  • Fig. 8 and 9 show a complete system according to the invention. From germinating phase honeycombs 1 and l.l are brought into an observating unit 35, where balls containing no plant are recognized. The empty balls are thereafter removed. Honeycombs for growing purposes are brought to control 36, where defective honeycombs can be removed. The honeycombs 1.1 are then brought through a conveyor 37 into a completing unit 38, where empty pots are filled by a completing equipment described above, where half of the rows of pots is treated at a time. Honeycombs having run through are rotated around 39, returned 40 and run again through the completing unit. After the completing unit there is located a releasing unit 41 for full honeycombs.
  • honeycombs 1 are taken when needed into the completing unit through a conveyor 42 and an assembler 43 of the honeycomb, from which honeycombs the replacing balls are then taken.
  • the conveyor 42 and the assembler 43 are placed above the rotating and returning units 39 and 40.
  • a releasing unit 44 for empty honeycombs.
  • the system forms together with the sowing and germinating units a complete and automatically guidable process, in which no separate growing lines for replacing plants are needed.
  • the supporting means of the exemplified embodiment there is a steel strip 45 with arms 46 joined transversely on the belt 17.
  • the arms 46 are bent first backward and then straight forward from the belt, so as to press lightly the ball from opposite sides between the arms (Fig. 11) .
  • the strip 45 is provided with a mechanism for opening the strip when a ball is pushed to the gripping device 18.
  • the mechanism comprises two pivots 47 and a pin 48 and cylinder 49 between ends of the pivots. In free position the other ends of the pivots are outside the back bends 50 of the strip. When the strip is to be opened for pushing the ball to the gripping device, the said ends of the pivots press the bends of the strip so that the arms 46 open (Fig. 10) .
  • the honeycomb 1.1 can differ from the honeycomb 1.
  • the equipment can be used when transplanting plants from small pots into bigger ones.
  • a ball is then placed in each pot.
  • Suitable compacting devices for compacting the plant can also be attached in the equipment in this case.
  • a recognizing detector for an empty pot is naturally not used in this case.
  • the equipment can be used when planting in pots. Then instead of a honeycomb 1.1 separate pots are used.
  • the equipment is in modified version adapted for use in planting into the soil.
  • the equipment is placed on a base movable on the ground.
  • the transporting mechanism for the honeycomb 1.1 is left out and instead is attached a suitable equipment for making and compacting a planting furrow or planting holes and if desired a suitable arrangement for supporting seedlings in the planting phase.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Sciences (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)

Abstract

L'invention se rapporte à un système de manipulation de plantes. Dans ce système, les plantes sont transférées des pots d'une structure en nid d'abeilles par l'intermédiaire d'un dispositif de préhension (18) fixé à un transporteur circulant (17). L'invention convient particulièrement à des systèmes horticoles à grande échelle. Le système peut être utilisé, notamment, pour tranférer des plantes à des pots vides dans une seconde structure en nid d'abeilles.
PCT/FI1991/000270 1990-09-03 1991-09-03 Systeme de manipulation de plantes WO1992003907A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU84166/91A AU8416691A (en) 1990-09-03 1991-09-03 System for handling plants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI904346A FI904346A (fi) 1990-09-03 1990-09-03 System foer behandling av plantor.
FI904346 1990-09-03

Publications (1)

Publication Number Publication Date
WO1992003907A1 true WO1992003907A1 (fr) 1992-03-19

Family

ID=8531009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1991/000270 WO1992003907A1 (fr) 1990-09-03 1991-09-03 Systeme de manipulation de plantes

Country Status (3)

Country Link
AU (1) AU8416691A (fr)
FI (1) FI904346A (fr)
WO (1) WO1992003907A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2259232A (en) * 1991-08-02 1993-03-10 Hamilton Design Ltd T W Transplant apparatus
GB2260474A (en) * 1991-09-11 1993-04-21 Richard Anthony Chamberlain Transplanting apparatus for seedlings
US5320649A (en) * 1992-08-18 1994-06-14 Holland James J Plant transplant system
US5365693A (en) * 1992-09-10 1994-11-22 Metrolina Greenhouses, Inc. Method and apparatus for transplanting plants from one container to another
FR2709636A1 (fr) * 1993-09-07 1995-03-17 Const Metalliques Floren Perfectionnement aux installations de repiquage de plants cultivés sous forme de mottes dans des plateaux alvéolés.
EP0653907A1 (fr) * 1992-08-10 1995-05-24 Williames Hi-Tech International Pty. Limited Appareil pour planter automatiquement des semis preleves d'un bac a semis rigide
FR2738988A1 (fr) * 1995-09-21 1997-03-28 D Exploit Agricole Etablisseme Machine automatique permettant de realiser le depotage et rempotage de plants et dispositif permettant la manutention desdits plants utilisables sur une telle machine
NL1001762C2 (nl) * 1995-11-28 1997-05-30 Beekenkamp Plantenkwekerij B V Werkwijze en inrichting voor het vullen van een houder.
US5956895A (en) * 1992-07-01 1999-09-28 Salmond; Colin Herbert Crop
US6338221B1 (en) 1992-07-01 2002-01-15 Colin Herbert Salmond Crop
EP1228684A1 (fr) * 2001-02-02 2002-08-07 Gerplant Automation Procédé et dispositif pour extraire sélectivement le terreau d'au moins une alvéole d'une plaque alvéolée utilisée notamment en culture horticole ou maraíchère
BE1014320A3 (nl) * 2001-07-31 2003-08-05 Perdu Geert Aanvoerinrichting voor kluitplanten en plantmachine voorzien van zo'n aanvoerinrichting.
US6854209B2 (en) * 2001-10-30 2005-02-15 Rijnplant B.V. Method for growing plants accommodated in containers on a bearer provided at a first, low level in a glasshouse
CN103636332A (zh) * 2013-12-09 2014-03-19 浙江理工大学 排动式移栽机末端执行器
US20200296903A1 (en) * 2019-03-19 2020-09-24 Cgechen Limited Soil covering and planting apparatus
EP3589110A4 (fr) * 2017-03-03 2021-04-14 Williames Pty Ltd. Améliorations apportées à des repiqueuses sélectives automatiques

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO223196A0 (en) * 1996-09-11 1996-10-03 Williames Hi-Tech International Pty Ltd Improved nursery trays and handling mechanisms therefor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO140523B (no) * 1976-10-01 1979-06-11 Jiffy Products Int Ltd Anordning ved plantebrett.
FR2432265A1 (fr) * 1978-08-02 1980-02-29 Mametora Agricult Mach Machine a repiquer de jeunes plants
FR2453802A1 (fr) * 1979-04-13 1980-11-07 Kopparfors Ab Dispositif pour orienter et transporter des produits allonges tels que des arbustes
GB2064933A (en) * 1979-12-18 1981-06-24 Illinois Tool Works Plant transfer mechanisms
EP0043427A2 (fr) * 1980-07-09 1982-01-13 Bud Antle, Inc. Dispositif pour l'alimentation automatique d'une planteuse en cartouches de jeunes plants
SE446421B (sv) * 1980-06-13 1986-09-15 Stora Kopparbergs Bergslags Ab Sett att byta odlingsenheter i elastiska krukor samt anordning for genomforande av settet
EP0288873A1 (fr) * 1987-04-28 1988-11-02 Gerplant Automation Dispositif de préhension et de transfert de plants en mottes
US4893571A (en) * 1987-11-02 1990-01-16 Lannen Tehtaat Oy Method and device for planting balled seedlings
GB2228398A (en) * 1988-12-14 1990-08-29 Nat Res Dev Transplanting equipment
EP0390289A1 (fr) * 1989-03-31 1990-10-03 Visser 's-Gravendeel Holding B.V. Appareil pour replanter des pousses alignées dans des caisses

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO140523B (no) * 1976-10-01 1979-06-11 Jiffy Products Int Ltd Anordning ved plantebrett.
FR2432265A1 (fr) * 1978-08-02 1980-02-29 Mametora Agricult Mach Machine a repiquer de jeunes plants
FR2453802A1 (fr) * 1979-04-13 1980-11-07 Kopparfors Ab Dispositif pour orienter et transporter des produits allonges tels que des arbustes
GB2064933A (en) * 1979-12-18 1981-06-24 Illinois Tool Works Plant transfer mechanisms
SE446421B (sv) * 1980-06-13 1986-09-15 Stora Kopparbergs Bergslags Ab Sett att byta odlingsenheter i elastiska krukor samt anordning for genomforande av settet
EP0043427A2 (fr) * 1980-07-09 1982-01-13 Bud Antle, Inc. Dispositif pour l'alimentation automatique d'une planteuse en cartouches de jeunes plants
EP0288873A1 (fr) * 1987-04-28 1988-11-02 Gerplant Automation Dispositif de préhension et de transfert de plants en mottes
US4893571A (en) * 1987-11-02 1990-01-16 Lannen Tehtaat Oy Method and device for planting balled seedlings
GB2228398A (en) * 1988-12-14 1990-08-29 Nat Res Dev Transplanting equipment
EP0390289A1 (fr) * 1989-03-31 1990-10-03 Visser 's-Gravendeel Holding B.V. Appareil pour replanter des pousses alignées dans des caisses

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2259232A (en) * 1991-08-02 1993-03-10 Hamilton Design Ltd T W Transplant apparatus
GB2260474A (en) * 1991-09-11 1993-04-21 Richard Anthony Chamberlain Transplanting apparatus for seedlings
GB2260474B (en) * 1991-09-11 1994-10-26 Richard Anthony Chamberlain Seedling transplanter
US5956895A (en) * 1992-07-01 1999-09-28 Salmond; Colin Herbert Crop
US6338221B1 (en) 1992-07-01 2002-01-15 Colin Herbert Salmond Crop
EP0653907A1 (fr) * 1992-08-10 1995-05-24 Williames Hi-Tech International Pty. Limited Appareil pour planter automatiquement des semis preleves d'un bac a semis rigide
EP0653907A4 (fr) * 1992-08-10 1995-07-19 Williames Hi Tech Int Appareil pour planter automatiquement des semis preleves d'un bac a semis rigide.
US5320649A (en) * 1992-08-18 1994-06-14 Holland James J Plant transplant system
US5365693A (en) * 1992-09-10 1994-11-22 Metrolina Greenhouses, Inc. Method and apparatus for transplanting plants from one container to another
FR2709636A1 (fr) * 1993-09-07 1995-03-17 Const Metalliques Floren Perfectionnement aux installations de repiquage de plants cultivés sous forme de mottes dans des plateaux alvéolés.
FR2738988A1 (fr) * 1995-09-21 1997-03-28 D Exploit Agricole Etablisseme Machine automatique permettant de realiser le depotage et rempotage de plants et dispositif permettant la manutention desdits plants utilisables sur une telle machine
NL1001762C2 (nl) * 1995-11-28 1997-05-30 Beekenkamp Plantenkwekerij B V Werkwijze en inrichting voor het vullen van een houder.
EP1228684A1 (fr) * 2001-02-02 2002-08-07 Gerplant Automation Procédé et dispositif pour extraire sélectivement le terreau d'au moins une alvéole d'une plaque alvéolée utilisée notamment en culture horticole ou maraíchère
FR2820278A1 (fr) * 2001-02-02 2002-08-09 Gerplant Automation Procede et dispositif pour extraire selectivement le terreau d'au moins une alveole d'une plaque alveolee utilisee notamment en culture horticole ou maraichere
BE1014320A3 (nl) * 2001-07-31 2003-08-05 Perdu Geert Aanvoerinrichting voor kluitplanten en plantmachine voorzien van zo'n aanvoerinrichting.
US6854209B2 (en) * 2001-10-30 2005-02-15 Rijnplant B.V. Method for growing plants accommodated in containers on a bearer provided at a first, low level in a glasshouse
CN103636332A (zh) * 2013-12-09 2014-03-19 浙江理工大学 排动式移栽机末端执行器
CN103636332B (zh) * 2013-12-09 2015-07-22 浙江理工大学 排动式移栽机末端执行器
EP3589110A4 (fr) * 2017-03-03 2021-04-14 Williames Pty Ltd. Améliorations apportées à des repiqueuses sélectives automatiques
US11337364B2 (en) 2017-03-03 2022-05-24 Williames Pty Ltd To automatic selective transplanters
US20200296903A1 (en) * 2019-03-19 2020-09-24 Cgechen Limited Soil covering and planting apparatus

Also Published As

Publication number Publication date
AU8416691A (en) 1992-03-30
FI904346A0 (fi) 1990-09-03
FI904346A (fi) 1992-03-04

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