Anti-pest agent sprayer

Abstract

An apparatus for applying anti-pest agents to tree trunks according to some aspects of the invention include a first member; a second member movably connected to the first member; and at least one tube movable with the second member. The tube has a plurality of openings through which the anti -pest agent is ejected toward one or more tree trunks. In some examples, the ejected agent forms a layer around the trunk. In some examples, one or more biasing means are connected at one end to the first member and at the other end to the second member such that when the apparatus is moving against the trunk, the second member is caused to move from a rest position, thereby engaging said biasing means. In some embodiments the apparatus includes an actuator for moving of the second member from a first position to a second position, and a processing unit configured to operate the actuator.

Description

[0001] ANTI-PEST AGENT SPRAYER

[0002] TECHNICAL FIELD

[0003] The present invention relates to the field of tree pest control. More specifically, the present invention pertains to the automation of applying anti-pest agents to tree trunks.

[0004] BACKGROUND

[0005] Tree pest control is a crucial aspect of maintaining healthy and productive forests and orchards. Pests, such as insects and fungi, can cause significant damage to trees, leading to reduced yields, compromised structural integrity, and, in severe cases, tree death.

[0006] Traditionally, tree trunks have been painted manually with various substances to deter pests. This typically involves mixing lime, sulfur, or other chemical agents with water to create a paste, which is then manually brushed or sprayed onto the tree trunks. Although these traditional methods are simple and inexpensive, they present several challenges, being labor-intensive and inconsistent.

[0007] Advancements have been proposed in the automation of applying anti-pest agents to tree trunks to address some of the shortcomings of manual methods. Examples include Chinese patents 102783475B and 103535224A, as well as the article "Development of an Automatic Tree Coating Machine," Agricultural Research, October 2018, by Chong Wang et al. However, these proposals still seem to involve human intervention, at least in their simpler and more accessible versions. It seems that both manual and automated methods for applying anti-pest agents to tree trunks are accompanied by several significant shortcomings. Manual application remains labor-intensive, requiring considerable human effort, especially in large orchards or forests, resulting in high labor costs and insufficient output. Additionally, the effectiveness of manual treatment is inconsistent, heavily dependent on the skill and diligence of the workers, which can lead to variable coverage and protection. On the other hand, existing automated systems, while they may reduce labor, often still require human intervention and are plagued by issues such as excessive pesticide use, clumsiness, and complexity. These shortcomings highlight the need for a more efficient, consistent, and user-friendly solution, which the present invention aims to address.

[0008] The terms “applicator" and “apparatus for applying anti-pest agents to tree trunks”, may be used interchangeably hereinafter.

[0009] The terms “first member”, “boom”, “arm” and "handle" may be used interchangeably hereinafter.

[0010] The terms “second member”, “support”, and “sprayer” may be used interchangeably hereinafter.

[0011] The terms “ejecting”, “spraying”, and “applying” may be used interchangeably hereinafter.

[0012] The terms “first position”, "default position" and “rest position” may be used interchangeably hereinafter.

[0013] The terms “tube”, and "pipe" may be used interchangeably hereinafter. The terms “processing unit” and "control unit" may be used interchangeably hereinafter.

[0014] SUMMARY OF EMBODIMENTS OF THE INVENTION

[0015] The present invention is intended, among other things, to streamline the application of anti-pest agents to tree trunks, particularly in large plantations or forests.

[0016] An apparatus for applying anti-pest agents to tree trunks, according to aspects of the invention include a first member; a second member movably connected to said first member; and at least one tube movable with said second member. The agent can be ejected from openings in the tube towards the trunks. In some embodiments the tube is connected to at least one anti-pest agent reservoir. The reservoirs can be designed in various configurations to suit different operational needs. They may be mobile, such as trailers or tanks, attached to the apparatus or installed on a vehicle that carries both the apparatus and the reservoir. Alternatively, the reservoirs can be stationary units with pipes extending from them, which can be deployed in passages between trees. Additionally, these pipes can be equipped with a spring-loaded mechanism for easy retraction, keeping the work area clear and facilitating smooth operations. In some examples, the ejected agent forms a layer around the trunk. In some cases, the second member is hollow, forming a section of the tube. In some embodiments the second member movement is around the trunk.

[0017] In some examples, one or more biasing means are connected at one end to the first member and at the other end to the second member such that when the apparatus is moving against the trunk, the second member is caused to move from a rest position, thereby engaging said biasing means. In some examples this movement against the trunk includes pushing against the trunk. In some examples movement of the second member from the rest position is caused by contact with the trunk. In some cases during the movement of the apparatus away from the trunk, the second member returns to the rest position by disengaging the biasing means. Various types of biasing means can be employed in some embodiments of the invention. These include coil springs, torsion springs, and pneumatic springs. Coil springs offer reliable tension and compression for controlled movement, while torsion springs are ideal for rotational motion. Pneumatic springs, which use compressed air, provide smooth, adjustable force and are often used where precision and flexibility are key. Another option is the use of elastic bands, which provide a simple, cost-effective solution for biasing. Elastic bands can be particularly useful where a lightweight and flexible biasing means is needed. Each type may serve to return the above second member or its default position. In some examples, at least one roller is installed on the second member to reduce the friction between the second member and the trunk. In some embodiments the second member includes teeth; at least one gear cooperative with the teeth; and a rod fixed to the gear. The gear is caused to move along the teeth by a force exerted by the rod when the rod is in contact with the trunk during a movement of the apparatus relative to the trunk. In some apparatuses embodying the invention, one or more rollers are installed on the second member. A second member according to some embodiments includes a rail; at least one roller cooperative with the rail; and a rod fixed to the roller. The roller is caused to move along the rail by a force exerted by the rod when in contact with the trunk during a movement of said apparatus relative to the trunk. Alternatives to rollers may include bearings; sliding blocks that fit into the rail to enable smooth movement; guide pins that engage grooves or channels within the rail for controlled motion; sliders or gliders with low-friction contact surfaces, such as nylon or plastic pads, that slide along the rail; hooks or catches that latch onto or follow the rail's contour for guided movement; and flexible bands or cables tethered to the first member and guided along a track or rail to facilitate controlled movement.

[0018] In some embodiments the apparatus includes at least one first actuator for moving of the second member from a first position to a second position; and a first processing unit configured to operate the first actuator. In some examples the apparatus includes at least one proximity sensor for measuring the apparatus distance from the trunk, where the measured distance is input received by the first processing unit. In some embodiments the second member movement is initiated when the distance from the trunk meets a first predefined value. In some examples the ejecting of the agent is initiated when the distance from the trunk meets a second predefined value. In some embodiments, with the first actuator, at least one biasing means has a first end connected to the first member and a second end connected to the second member. The biasing means is configured to exert a force that returns the second member to its first position. In some examples, the force exerted by the biasing means counteracts the force applied by the first actuator to move the second member from its first position. Thus, in some embodiments, the second member returns to its first position due to the biasing means when the first actuator is stopped. However, there are examples of the invention where the second member returns to its first position using the same first actuator.

[0019] Different types of actuators can be utilized in agricultural equipment, each offering distinct advantages tailored to various tasks. Hydraulic actuators are characterized by their powerful force, making them suitable for heavy-duty applications. Pneumatic actuators are often chosen for their speed and reliability, ideal for lighter-duty tasks such as controlling valves or adjusting plant positions. Electric actuators are favored for their precise control, versatility, and ease of integration into automated systems. Lastly, mechanical actuators, including gear-driven and screw-driven types, are valued for their durability and simplicity, such as in adjusting the height of planting equipment. Each actuator type can be integrated into an apparatus embodying the present invention to enhance its functionality and efficiency.

[0020] Different types of building materials can be selected based on their properties. Lightweight materials such as aluminum or high-strength polymers are often chosen for parts driven by actuators to enhance efficiency and reduce energy consumption. For components like the tube that need flexibility, materials such as reinforced rubber or flexible plastics may be preferred to withstand varying operational stresses and environmental conditions. To ensure durability and resistance to environmental impacts, including exposure to chemical substances like anti-pest agents, materials such as stainless steel or corrosion-resistant alloys might be used. The choice of materials can be tailored to each part of the apparatus and the specific working conditions it will encounter, balancing factors like strength, flexibility, and resistance to environmental factors.

[0021] In some embodiments of the above aspects at least a part of the first member is a telescopic arm. In some examples there is a second actuator for changing the telescopic arm length. A telescopic arm is composed of multiple nested sections, each capable of sliding within the other to extend or retract the overall length of the arm. Once the desired length is reached, the sections can be secured in place by a locking mechanism. This locking mechanism could be a twist-lock system, where rotating one section relative to the other tightens them together, or a clamp system, where external clips or levers are engaged to hold the sections firmly in position. In either case, the arm remains stable and fixed at the required length until the locking mechanism is released, allowing further adjustment. The present invention is not limited to any specific locking mechanism. For instance, one example includes a pin-lock mechanism. In this type of telescopic rod, each segment has a series of holes along its length. As the arm is extended or retracted, the holes on one segment align with spring-loaded pins or bumps on the adjacent segment. When the holes are properly aligned, the pins are pushed into the holes by spring tension, locking the two segments in place. This prevents further movement until the pin is manually disengaged or retracted by applying pressure, allowing the arm to be adjusted again.

[0022] In some embodiments of the invention, the first member comprises two parts that are rotatably connected. These parts of the first member may be rotated by a third actuator. In some cases, a height adjustment means may be included to control the vertical position of the second member relative to the ground.

[0023] An apparatus embodying the invention includes locator means to determine its location. In some examples, the first member is used to connect the apparatus to a remotely controlled vehicle. A system according to some aspects of the invention is used to coordinate a number of these apparatuses. Such a system includes a central control or processing unit configured to communicate with driving units installed in the remotely controlled vehicles. The central control unit includes a communication module for exchanging data with said driving units; a processing module configured to: receive input from the driving units, said input comprising the position and velocity of each of said vehicles; calculate optimal movement paths for each vehicle based on the received input to avoid collisions and ensure efficient traffic flow; and transmit control commands to the vehicle driving control units to adjust the speed, direction, and path of each vehicle accordingly. Additionally the control unit includes a coordination algorithm stored in the processing module. The coordination algorithm is configured to coordinate the vehicles' movements to achieve the completion of the application of anti-pest agents to tree trunks in a predefined area within minimal time.

[0024] A method for applying anti-pest agents to tree trunks, in accordance with aspects of the invention, involves the use of the apparatus described above. This method includes: moving the apparatus between trees; and ejecting the agent toward at least one tree trunk. In some embodiments, the movement of the apparatus is continuous. In certain examples, this movement is only forward, without the need for any backward movement. Moving without breaks offers significant advantages in terms of efficiency and productivity. Continuous movement allows the machine to cover large areas in less time, reducing downtime and increasing the overall speed of operations. Furthermore, a system capable of constant forward motion, as opposed to one that requires stopping or reversing, streamlines the workflow. The need to stop or backtrack slows down the progress and can disrupt the uniformity of spraying. In contrast, uninterrupted forward movement enhances the precision and consistency of the work, ultimately improving output while minimizing delays.

[0025] In some methods embodying the invention, the operation of the apparatus involves the second member making contact with trunks. In some examples, the agent is ejected during this contact. In some embodiments, the contact occurs once for each trunk.

[0026] A method according to embodiments of the invention includes forming a layer of the agent around the trunk. In some examples it includes moving the second member around the trunk. Some embodiments of the method encompass tracking the apparatus's location using locator means. Some embodiments include coordinating the movement of a number of apparatuses, each of which is connected to a remotely controlled vehicle.

[0027] BRIEF DESCRIPTION OF THE DRAWINGS

[0028] A complete understanding of the present embodiments and the advantages and features thereof will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings. Embodiments of the present disclosure are illustrated as examples and are not limited by the figures of the accompanying drawings, in which like references may indicate similar elements and in which:

[0029] FIG. 1 schematically illustrates hand brushing of a tree trunk according to the prior art.

[0030] FIG. 2 schematically illustrates a ring formed by a spray of anti-pest agent applied around a trunk according to some embodiments of the invention.

[0031] FIG. 3A schematically illustrates the initial contact of the apparatus with a trunk during the apparatus movement, according to some embodiments of the invention.

[0032] FIG. 3B schematically illustrates the stretching of the spring during the apparatus movement, according to some embodiments of the invention.

[0033] FIG. 3C schematically illustrates the final stage of contact of the support with the trunk during the apparatus movement, according to some embodiments of the invention.

[0034] FIG. 4 schematically illustrates the agent supply system, according to some embodiments of the invention.

[0035] FIG. 5 schematically illustrates an apparatus according to some embodiments of the invention that includes a telescopic boom. FIG. 6A schematically illustrates an apparatus according to some embodiments of the invention with a rail where a pin (not shown) is inserted for allowing the support movement relative to the boom (not shown).

[0036] FIG. 6B schematically illustrates the boom and the pin of the apparatus of FIG. 6A, according to some embodiments of the invention.

[0037] FIG. 7A schematically illustrates an apparatus according to some embodiments of the invention, including a selector installed to switch to an automatic mode in which an actuator (not shown) is used to move the support.

[0038] FIG. 7B schematically illustrates an apparatus according to some embodiments of the invention, similar to the apparatus in FIG. 7A yet with a spring used for returning the support to its initial position.

[0039] FIG. 8 schematically illustrates an apparatus according to some embodiments of the invention, with two pistons for hingedly moving the boom from side to side.

[0040] FIG. 9A schematically illustrates a perspective of an apparatus featuring a jack according to some embodiments of the invention.

[0041] FIG. 9B schematically illustrates a perspective of the apparatus of FIG. 9A showing the jack during lifting.

[0042] FIG 10 schematically illustrates three operating apparatuses mounted on tractors, located in a plantation, according to some embodiments of the invention.

[0043] FIG 11 FIG 11 schematically depicts a system architecture for coordinating multiple apparatuses according to some embodiments of the invention. DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

[0044] Tree pest control is a crucial aspect of maintaining healthy and productive forests and orchards. The present invention is intended to provide an efficient, consistent, and user-friendly automated application of anti-pest agents to tree trunks.

[0045] Traditionally, a mixture of lime, sulfur, or other chemical agents is combined with water and then manually brushed or sprayed onto the tree trunks as depicted schematically in FIG. 1 showing worker 1 brushing tree trunk 2. An advantage of the present invention, according to some embodiments, is illustrated in FIG. 2, which shows ring 3 formed by a spray of anti-pest agent applied around trunk 2. The precision of this application is more likely to result in a continuous, gap-free ring, aiming to provide a more effective blockage of pests and less waste of the agent.

[0046] Advancements have been proposed in the automation of applying anti-pest agents to tree trunks to address some of the shortcomings of manual methods. Examples include Chinese patents 102783475B and 103535224A, as well as the article "Development of an Automatic Tree Coating Machine," Agricultural Research, October 2018, by Chong Wang et al. However, existing automated systems, while they may reduce labor, often still require human intervention and are plagued by issues such as excessive pesticide use, clumsiness, and complexity.

[0047] The movement of apparatus 10 between trunks 2 and the effect of each contact with trunks 2 are depicted in FIGS. 3A-C. The direction of this movement is indicated by arrows A. The forces exerted by trunk 2 and spring 13 drive the operation of apparatus 10. The curved shape of pipe 11 and its movement around trunk 2 allow for the creation of a ring 3 when the anti -pest agent is sprayed from sprinklers 15 fixed at both ends of pipe 11. Pipe 11 is attached to the outer circumference of curved support 16. In some embodiments, the angle between the two sprinklers 15 is 180 degrees, with the apex of this angle located at the center of the circle partially surrounded by pipe 11 and support 16. In some embodiments, additional sprinklers are fixed along the length of pipe 11, in addition to sprinklers 15, from which the agent is sprayed. Part 17 serves to connect support 16 to hinge 18, which is connected to booml2. Spring 13 is attached at one end to support 16 and at the other end to boom 12, such that when apparatus 10 moves against trunk 2, support 16 shifts from its rest position along with pipe 11, engaging spring 13. The initial contact of apparatus 10 with trunk 2, via support 16, is depicted in FIG. 3 A. The movement of apparatus 10 from its initial position shown in FIG. 3A is schematically depicted in FIG. 3B, where spring 13 is stretched due to the movement of support 16 around hinge 18. This relative movement of support 16 is caused by the force exerted on it by trunk 2. In FIG. 3C, apparatus 10 is shown in the next position after moving onward from its position depicted in FIG. 3B. Support 16 is shown in the final stage of contact with trunk 2. After that, apparatus 10 moves away from trunk 2 until support 16 is no longer in contact with trunk 2. With no contact with trunk 2, the force exerted on support 16 ceases. Consequently, support 16 returns to its rest position due to the force of spring 13. This rest position is the same as the one shown in FIG. 3 A, when contact between support 16 and trunk 2 first begins.

[0048] The agent supply system according to some embodiments of the invention is schematically depicted in FIG. 4. The system includes pipe 11, one end connected to agent reservoir 11.2 through connection 11.3, which incorporates manual valve 11.4 and controlled valve 11.5. Pipe 11 splits at point A into two branches, with both branches connecting at ends Al and A2 to sprinklers 15 as described above. As mentioned earlier, the apparatus according to some embodiments of the invention includes at least one proximity sensor for measuring the distance of the apparatus from the trunk, with the measured distance provided as input to a processing unit. In some examples, ejection of the agent is initiated when the distance from the trunk meets a predefined value. This can be achieved by opening valve 15.5, which is controlled by the processing unit. Other alternatives include applying pressure in the reservoir to push the agent through pipe 11 or using a pump.

[0049] Apparatus 20, according to several embodiments of the invention, is described in FIG. 5. Apparatus 20 is similar to Apparatus 10 discussed above but includes additional features. Boom 12 has a telescopic structure with two sections: an outer section 12.1 and an inner section 12.2, which can slide longitudinally relative to each other, allowing the length of boom 12 to be adjusted. Section 12.1 includes perforations 12.3, enabling the relative position to be fixed as needed using a clamping screw 12.4. The end of boom 12 can be connected to another object, such as a vehicle, using a hinge connector 12.5. Support 16 includes rollers that reduce friction with tree trunk 2.

[0050] Apparatus 30, as depicted in FIGS. 6A-B, is similar to devices 10 and 20 described above. However, instead of hinge 18, support 16 includes rail 16.2, which allows it to slide on pin 16.3 connected to boom 12 and inserted into rail 16.2. This configuration enables movement of support 16 relative to boom 12 without the use of hinge 18. Additionally, apparatus 30 features a third sprinkler 15 located at the center of support 16, complementing the two sprinklers 15 mounted at its edges.

[0051] Apparatus 40 is depicted in FIG. 7A according to some embodiments of the invention. Apparatus 40 includes an actuator (not shown) for moving support 16. The actuator becomes operative when mode selector 41 is switched to automatic mode. In the example shown in FIG. 7A proximity sensor 42 installed on support 16 is used to measure the distance from the trunk. The measured distance is received by a processing unit (not shown). When the distance reaches a predefined value, the processing unit operates the actuator to move support 16 peripherally around the trunk of the nearby tree. After support 16 completes its peripheral movement, the processing unit operates the actuator to return support 16 to its initial position. In some examples, the return of support 16 may be delayed until the measured distance increases to a predefined value as apparatus 40 moves away from the tree trunk.

[0052] In FIG. 7B another version of apparatus 40 is depicted where spring 43 is included with its first end connected to boom 12 and its second end connected to the support 16. Spring 43 stretches as the actuator moves support 16 around the tree trunk. When the actuator ceases operation at the end of the movement, spring 43 returns support 16 to its initial position.

[0053] Different types of actuators can be utilized according to some embodiments of the present invention, each offering distinct advantages tailored to various tasks. Hydraulic actuators are characterized by their powerful force, making them suitable for heavy-duty applications. Pneumatic actuators are often chosen for their speed and reliability, ideal for lighter-duty tasks such as controlling valves or adjusting plant positions. Electric actuators are favored for their precise control, versatility, and ease of integration into automated systems. Lastly, mechanical actuators, including gear-driven and screw-driven types, are valued for their durability and simplicity.

[0054] Embodiments of the invention utilizing pistons to move the parts of Apparatus 50 in desired directions are schematically illustrated in FIG. 8. In these embodiments, piston 53 replaces the springs 13 or 43 described earlier. Similar to Apparatus 20, boom 12 in apparatus 50 has a telescopic structure, with its length adjustable using a clamping screw threaded into one of the perforations along its length. For finer and more frequent adjustments, apparatus 50 also includes piston 54, with each of its ends connected to one of the two sections of boom 12. Like in apparatus 20, boom 12 is connected at one end to hinge connector 12.5, however, in apparatus 50, connector 12.5 attaches to another object via accessory 59. Additionally, pistons 55.1 and 55.2 are each connected at one end to accessory 59 and at the other end to boom 12. These pistons are positioned on opposite sides of boom 12 and accessory 59, enabling reciprocal action to hingedly move boom 12 from side to side. In the example shown in FIG. 8, piston 55.1 is in a shortened position, while piston 55.2 is elongated, causing boom 12 to incline toward the side of piston 55.1.

[0055] Apparatus 50 is schematically depicted in FIGS. 9A-B, where it is connected via accessory 59 to jack 56 featuring operating handle 56.1. Also shown is gear 56.2, which can alternatively be connected to a motor for powered operation instead of manual use. Alternatives to jack 56 may include hydraulic lifts, pneumatic cylinders, or scissor lifts. While FIG. 9A shows the rest position, FIG. 9B shows the jack during lifting.

[0056] A section of plantation 100, showing three apparatuses 50 mounted on tractors 150 in motion, is depicted in FIG. 10. The relative position of support 16 to trunk 2 illustrates the operation phase of each apparatus 50. The left tractor 150 has just reached its adjacent trunk 2, while the right tractor 150 has moved slightly further, with its support 16 already completing more movement around trunk 2 than the support 16 on the left tractor 150. The middle tractor 150 is seen moving even further away from its adjacent trunk 2. An apparatus embodying the invention includes locator means to determine its location. In some examples, the apparatus is mounted on a remotely controlled vehicle (e.g., tractor). System 200, according to some embodiments of the invention depicted schematically in FIG. 11, coordinates multiple apparatuses, such as those described above. It includes central control or processing unit 201 configured to communicate with driving units 202 installed in remotely controlled vehicles 203. Each driving unit 202 includes locator means to determine the vehicle's position and velocity and transmit this data to central control unit 201. Central control unit 201 includes communication module 204 for exchanging data with driving units 202 and processing module 205 configured to:

[0057] • receive input from driving units 202, including the position and velocity of each vehicle 203;

[0058] • calculate optimal movement paths for each vehicle 203 based on the received input to avoid collisions and ensure efficient traffic flow; and

[0059] • transmit control commands to driving units 202 to adjust the speed, direction, and path of each vehicle 203.

[0060] Additionally, control unit 201 includes a coordination algorithm stored in processing module 205. The algorithm coordinates vehicle 203 movements to complete the application of anti-pest agents to tree trunks in a predefined area within minimal time.

[0061] It should be understood that elements and / or features of an apparatus, or a method described herein can be combined in a variety of ways without departing from the spirit and scope of the present teachings, whether explicit or implicit herein. For example, where reference is made to a particular structure, that structure can be used in various embodiments of apparatus of the present teachings and / or in methods of the present teachings, unless otherwise understood from the context. In other words, within this application, embodiments have been described and depicted in a way that enables a clear and concise application to be written and drawn, but it is intended and will be appreciated that embodiments may be variously combined or separated without parting from the present teachings and invention(s). For example, it will be appreciated that all features described and depicted herein can be applicable to all aspects of the invention(s) described and depicted herein.

[0062] It should be understood that the expression “at least one of’ includes individually each of the recited objects after the expression and the various combinations of two or more of the recited objects unless otherwise understood from the context and use.

[0063] The use of the term “include,” “includes,” “including,” “have,” “has,” “having,” “contain,” “contains,” or “containing,” including grammatical equivalents thereof, should be understood generally as open-ended and non-limiting, for example, not excluding additional unrecited elements or steps, unless otherwise specifically stated or understood from the context.

[0064] The use of the singular herein, for example, “a,” “an,” and “the,” includes the plural (and vice versa) unless specifically stated otherwise.

[0065] The use of any and all examples, or exemplary language herein, for example, “such as,” “including,” or “for example,” is intended merely to better illustrate the present teachings and does not pose a limitation on the scope of the invention unless claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the present teachings.

[0066] The present teachings encompass embodiments in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting on the present teachings described herein.

Claims

CLAIMS1. An apparatus for applying anti-pest agents to tree trunks comprising a first member; a second member movably connected to said first member; and at least one tube movable with said second member, said tube having a plurality of openings through which said agent is ejected toward at least one tree trunk.

2. The apparatus of claim 1, wherein said tube is fluidly connected to at least one reservoir of anti-pest agent.

3. The apparatus of claim 1, wherein said movement of said second member is around the trunk.

4. The apparatus of claim 1, wherein said ejecting forms a layer of said agent around said trunk.

5. The apparatus of claim 1, wherein said second member is hollow forming a section of said tube.

6. The apparatus of claim 1, comprising at least one roller installed on said second member.

7. The apparatus of claim 1, comprising at least one biasing means with a first end connected to said first member, and a second end connected to said second member,wherein, when said apparatus is moving against the trunk, said second member is caused to move from a rest position, thereby engaging said biasing means.

8. The apparatus of claim 7, wherein said movement against the trunk comprises pushing against the trunk.

9. The apparatus of claim 8, wherein said movement from said rest position is caused by contact with the trunk.

10. The apparatus of claim 7, wherein during movement of said apparatus away from the trunk, said second member returns to said rest position by disengaging said biasing means.

11. The apparatus of claim 7, wherein said second member comprising: a plurality of teeth; at least one gear cooperative with said teeth; and a rod fixed to said gear, wherein said gear is caused to move along said teeth by a force exerted by said rod when in contact with the trunk during a movement of said apparatus relative to the trunk.

12. The apparatus of claim 7, wherein said second member comprising: a rail; at least one roller cooperative with said rail; and a rod fixed to said roller,wherein said roller is caused to move along said rail by a force exerted by said rod when in contact with the trunk during a movement of said apparatus relative to the trunk.

13. The apparatus of claim 1, comprising: at least one first actuator for moving of said second member from a first position to a second position; and a first processing unit configured to operate said first actuator.

14. The apparatus of claim 13, comprising at least one proximity sensor for measuring said apparatus distance from the trunk, wherein said measured distance is input received by said first processing unit.

15. The apparatus of claim 14, wherein said second member movement is initiated when said distance from the trunk meets a first predefined value.

16. The apparatus of claim 13, wherein said ejecting is initiated when said distance from the trunk meets a second predefined value.

17. The apparatus of claim 13 comprising, comprising at least one biasing means with a first end connected to said first member, and a second end connected to said second member, wherein said second member returns to said first position by a force exerted by said biasing means.

18. The apparatus of claim 13, wherein said second member returns to said first position by said first actuator.

19. The apparatus of claim 1, wherein at least part of said first member is a telescopic arm.

20. The apparatus of claim 19, comprising a second actuator for changing said telescopic arm length.

21. The apparatus of claim 1, wherein said at least first member comprises two parts rotatably connected.

22. The apparatus of claim 21, comprising a third actuator configured to rotate said parts of said first member.

23. The apparatus of claim 1, comprising height adjustment means configured to control the vertical position of said second member relative to the ground.

24. The apparatus of claim 1, comprising locator means configured to allow the location of said apparatus.

25. The apparatus of claim 24, wherein said first member is a connector for a vehicle, wherein said vehicle is equipped with a remotely controlled driving unit.

26. A system for coordinating the movements of a plurality of apparatuses of claim25, comprising: a central control unit configured to communicate with said driving units, the central control unit comprising: a communication module for exchanging data with said driving units; a processing module configured to:receive input from the driving units, said input comprising the position and velocity of each of said vehicles; calculate optimal movement paths for each said vehicle based on said received input to avoid collisions and ensure efficient traffic flow; transmit control commands to said driving units to adjust the speed, direction, and path of each vehicle accordingly; and a coordination algorithm stored in the processing module, the coordination algorithm being configured to: coordinate said vehicles' movements to achieve completion applying anti-pest agents to tree trunks in a predefined area in minimal time.

27. A method of applying anti-pest agents to tree trunks using the apparatus of any one of claims 1 to 26, said method comprising: moving said apparatus between trees; and ejecting said agent toward at least one tree trunk.

28. The method of claim 27, comprising contacting of said second member in the trunks.

29. The method of claim 28, wherein said ejecting is during said contacting.

30. The method of claim 28, wherein said contacting is once for each of the trunks.

31. The method of claim 27, comprising forming a layer of said agent around the trunk.

32. The method of claim 27, wherein said movement of said second member is around the trunk.

33. The method of claim 27, comprising tracking said apparatus location utilizing locator means.

34. The method of claim 27, comprising coordinating the movement of said apparatuses, each of which is connected to a remotely controlled vehicle.

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