Variable rate drum fertigation machine

Abstract

The invention relates to a variable rate drum fertigation machine that is used to carry out irrigation and liquid fertilization processes simultaneously and automatically in field agriculture, enabling the automatic preparation of irrigation water for the entire field at high resolution, and enabling the liquid fertilizer and irrigation water to be adjusted in the right place, in the right amount and instantly.

Description

[0001] VARIABLE RATE DRUM FERTIGATION MACHINE

[0002] TECHNICAL FIELD

[0003] The invention relates to a variable rate drum fertigation machine that is used to carry out irrigation and liquid fertilization processes simultaneously and automatically in field agriculture, enabling the automatic preparation of irrigation water for the entire field at high resolution, and enabling the liquid fertilizer and irrigation water to be adjusted in the right place, in the right amount and instantly.

[0004] PRIOR ART

[0005] Today, the fertigation process, in which irrigation and fertilization are carried out simultaneously by adding plant nutrients to the irrigation water, has an important place in the agricultural sector. Fertigation is typically achieved through the use of water-soluble fertilizers, which are dissolved and diluted with water before being delivered to plants through irrigation systems. This method aims to increase efficiency by delivering nutrients directly to the roots of plants. Fertigation applications are most commonly performed with drip irrigation systems, but can also be applied to center pivot, linear motion and fixed sprinkling systems. These systems are used together with each other, particularly in field agriculture, to simultaneously deliver water and fertilizer to plants. However, one of the biggest drawbacks of drip irrigation systems is that they are generally only effective in small areas. In order to irrigate large fields, the field must be divided into many sub-parcels, which leads to time, labor, cost and operational difficulties in terms of system installation and management. Therefore, central pivot and linear irrigation systems are generally preferred in large-scale agricultural areas.

[0006] Central pivot and linear irrigation systems are designed to distribute water evenly across the field. Variable-speed applications in these systems allow for different amounts of water to be distributed to areas with different water needs within the irrigated area. However, the correct application of irrigation water and fertilizer at variable rates poses a great challenge. In order to distribute water and fertilizer simultaneously in the right proportions and to the desired areas, an additional fertilization pipeline must be integrated into mobile irrigation systems. This creates additional infrastructure investment and cost requirements. In addition, the amount of water applied in existing drum irrigation systems can generally be adjusted in four stages. However, this setting is entirely based on user experience, and the entire fieldreceives the same amount of water. This practice leads to inefficiency, especially in areas with varying irrigation needs. Because water requirements vary across regions, efficient management of water and fertilizer use is impossible, negatively impacting agricultural productivity. Because each region's water requirements may be different. Thus, it is not possible to manage water and fertilizer use efficiently, which negatively affects agricultural productivity. In this context, technological innovations and integrated systems are needed to make irrigation and fertilization more efficient.

[0007] As a result of the research carried out in the literature, a Turkish patent application with the application numbered "2022 / 021985" and the invention title "INTEGRATED FERTIGATION SYSTEM DEVELOPED FOR AUTOMATIC DRUM IRRIGATION MACHINE" was found. The said application relates to agricultural irrigation. However, there is no indication in the application that a machine could be used to automatically perform irrigation and liquid fertilization operations simultaneously in field agriculture, automatically prepare irrigation water for the entire field at high resolution, or instantly adjust liquid fertilizer and irrigation water to the right place, in the right amount, and in real time.

[0008] As a result, the problems mentioned above, which cannot be solved in the light of the present art, have made it necessary to make an innovation in the relevant technical field.

[0009] BRIEF DESCRIPTION OF THE INVENTION

[0010] The present invention relates to a variable rate drum fertigation machine to eliminate the above-mentioned disadvantages and bring new advantages to the relevant technical field.

[0011] The main purpose of the invention is to ensure that irrigation and liquid fertilization processes can be carried out simultaneously and automatically in field agriculture, that irrigation water can be prepared automatically with high resolution for the entire field, and that liquid fertilizer and irrigation water can be adjusted in the right place, in the right amount and instantly.

[0012] In order to achieve all the objects mentioned above and which will emerge from the detailed explanation below, the present invention a variable rate drum fertigation machine that is used to carry out agricultural irrigation and liquid fertilization processes simultaneously and automatically, enabling the automatic preparation of irrigation water for the entire field with high resolution, and enabling the liquid fertilizer and irrigation water to be adjusted in the right place, in the right amount and instantly, comprising an electronic device that allows all electrically controllable components to be controlled and all data flow to be carried outthrough it, a pressure gauge that detects the water pressure in the main line of the main controller, a limit switch that detects and notifies the end of the irrigation cycle, a fertilizer tank that contains the mixture used for fertilization, a water flow sensor used to calculate the instantaneous and total amount of water passing during irrigation, a fertilizer flow sensor used to calculate the total and instantaneous amount of liquid fertilizer during fertilization, wherein; it comprises at least one wing that provides proportional irrigation and fertilization thanks to the nozzles on it, a wing carriage that houses the wings and control elements that perform proportional irrigation and fertilization, a drum that holds the water hose wrapped around it and enables the movement of the wing and wing carriage, a main control panel that is located in the drum section and contains the control mechanisms and switchgear components necessary to control the electrically operated components, drivers that are located in the main control panel and in all panels, and enable the pumps and motors to be controlled, an electric motor that has a variable speed drive and is controlled by the driver in the main control panel located in the drum, provides rotational movement to the drum and controls the wing speed, a gearbox that enables the drum to rotate with the drive it receives from the electric motor, at least one variable ratio dosing pump used to proportion the fertilizer in the fertilizer tank, at least one proportional water valve that is used to proportion the irrigation water, an encoder that is used to determine the position of the wing on the linear axis, a PLC that has programmable digital-analog inputs and outputs, operates the irrigation and fertilization algorithm, controls the components to be controlled by receiving commands from the electronic device, receives data from the sensors and transmits it to the electronic device, an irrigation and fertilization algorithm that receives information from all sensors in the field through the software it runs, creates an irrigation map and a fertilization map using the information received, and enables the irrigation and fertilization map created as a result of the analysis to be retrieved from the cloud or manually, and can automatically perform proportional irrigation via the proportional water valve and fertilization via the variable-rate dosing pump according to need, a pressure indicator that is located on the electronic device and allows the pressure value to be displayed after the signal sent by the pressure gauge is evaluated at the PLC analog inputs, a process control device that performs process control, detects the instantaneous passing water amount thanks to water flow sensors and sends instantaneous and total water amount information to the main control panel via wired or wirelessly, detects the instantaneous passing liquid fertilizer amount thanks to fertilizer flow sensors and sends instantaneous and total liquid fertilizer amount information to the main control panel via wired or wirelessly and communicates with the electronic device, a process control panel that is positioned on the wing, controls the instantaneous water and fertilizer amounts thanks to the limit switch, process control devices and drivers, provides data flow to the main processor and executes the incoming commands.In order to best understand the structure of the present invention and its advantages with additional elements, it needs to be evaluated together with the figures described below.

[0013] BRIEF DESCRIPTION OF THE FIGURES

[0014] Figure 1 is a representative illustration of the variable rate drum fertigation machine, which is the subject of the invention.

[0015] Figure 2 is a representative illustration of the drum found in a conventional drum irrigation machine.

[0016] Figure 3 is another representative illustration of the variable-rate drum fertigation machine, which is the subject of the invention.

[0017] Figure 4 is a representative illustration of the electric motor, gearbox, pressure gauge, pressure indicator and limit switch found in the invention.

[0018] Figure 5 is a representative illustration of the encoder-coder in the invention.

[0019] Figure 6 is a representative representation of the main control panel and the elements on it in the invention.

[0020] Figure 7 is a representative representation of the proportional water valves and flow sensors found in the invention.

[0021] Figure 8 is a representative representation of the process control panel and its components found in the invention.

[0022] Figure 9 is a representative representation of the wing carriage and its components found in the invention.

[0023] The drawings are not necessarily to scale, and details not essential to understanding the present invention may be omitted. Furthermore, elements that are at least substantially identical, or at least have substantially identical functions, are designated by the same number.

[0024] REFERENCE NUMBERS

[0025] 1. Variable rate drum fertigation machine

[0026] 2. Wing

[0027] 3. Drum

[0028] 4. Irrigation and fertilization algorithm

[0029] 5. Electronic device

[0030] 6. Main control panel7. Drum generator

[0031] 8. Electric motor

[0032] 9. Gear box

[0033] 10. Pressure gauge

[0034] 11. Pressure indicator

[0035] 12. Limit switch

[0036] 13. Encoder

[0037] 14. Drum Wi-Fi module

[0038] 15. Process control panel

[0039] 16. Process control devices

[0040] 17. PLC

[0041] 18. Wing Wi-Fi module

[0042] 19. Fertilizer tank

[0043] 20. Wing carriage

[0044] 21. Wing generator

[0045] 22. Dosing pump

[0046] 23. Proportional water valves

[0047] 24. Water flow sensor

[0048] 25. Fertilizer flow sensor

[0049] 26. GSM module

[0050] 27. GPS module

[0051] 28. Driver

[0052] DETAILED DESCRIPTION OF THE INVENTION

[0053] In this detailed description, the variable rate drum fertigation machine (1), which is the subject of the invention, is described only with examples that will not create any limiting effect for a better understanding of the subject.

[0054] The variable rate drum fertigation machine (1) comprises: wing (2), drum (3), irrigation and fertilization algorithm (4), electronic device (5), main control panel (6), drum generator (7), electric motor (8), gearbox (9), pressure gauge (10), pressure indicator (11), limit switch (12), encoder (13), drum Wi-Fi module (14), process control panel (15), process control devices (16), PLC (17), wing Wi-Fi module (18), fertilizer tank (19), wing carriage (20), wing generator (21), variable rate dosing pumps (22), proportional water valves (23), water flow sensor (24), fertilizer flow sensor (25), GSM module (26), GPS module (27), and driver (28). The wing (2) is the structure that provides proportional irrigation and fertilization thanks to the nozzleslocated on it. The drum (3) is the main platform that holds the water hose and enables the movement of the wing (2) and the wing carriage (20). The irrigation and fertilization algorithm (4) is an algorithm that receives information from the moisture sensors in the field through the software it runs in, and can automatically perform proportional irrigation and fertilization according to need by using the information received and obtaining the irrigation map and the fertilization map created as a result of the analysis from the cloud or manually. The electronic device (5) is the human-machine interface that enables all electrically controllable components to be controlled and all data flow to be ensured. The electronic device (5) is preferably a computer and it can be a 12-36VDC Intel i5 processor computer. However, the electronic device (5) can also be any device, such as a mobile phone, tablet, or smartwatch. The main control panel (6) is the panel or board that contains the control mechanisms and switchgear components necessary to control the electrically operated components. The drum generator (7) is the generator located in the drum (3) section and provides power to the electrically operated components, and in an embodiment of the invention, it is used as a 7.5 kW 380 VAC three-phase. The electric motor (8) is a variable-speed drive motor controlled by the driver (28) located within the main control panel (6) on the drum (3) and it provides rotational motion to the drum (3), thereby enabling control of the wing (2) speed, and in an embodiment of the invention, it is used as a 4 kW, 380VAC asynchronous motor. The gear box (9) is the gear assembly that enables the drum (3) to rotate with the drive it receives from the electric motor (8). The pressure gauge (10) is used for the main controller to detect the water pressure in the main line and in an embodiment of the invention it is used as a 24VDC 4-20ma transmitter - which enables the pressure present in liquids or gases in fluid state to be converted into an electrical signal. The pressure indicator (11) is the indicator located on the electronic device (5) that allows the pressure value to be displayed after the signal sent by the pressure gauge (10) is evaluated at the PLC (17) analog inputs. The limit switch (12) notifies the system that the irrigation cycle has ended and in an embodiment of the invention, it is used as a 1 NO 1NC switch. The encoder (13) is used to determine the position of the wing (2) on the linear axis and in an embodiment of the invention the incremental encoder is used as 24VDC. The drum Wi-Fi module (14) is the module that enables data exchange to be carried out wirelessly on the drum (3) side. The process control panel (15) is the unit that is positioned on the wing (2), controls the instantaneous water and fertilizer amounts thanks to the process control devices (16) and drivers (28) inside it, provides data flow to the main processor and executes the incoming commands. The process control devices (16) are devices that perform process control, preferably 4 in number, that detect the instantaneous passing water amount thanks to the water flow sensors (24) and send the instantaneous and total water amount information to the main control panel (6) via the Wi-Fi module, that detect the instantaneous passing liquid fertilizer amount thanks to the fertilizer flow sensors (25)and send the instantaneous and total liquid fertilizer amount information to the main control panel (6) via the Wi-Fi module, and that can be used as 24VDC 4-20 mA RS-485 modbus in an embodiment of the invention and communicate with the electronic device (5). The PLC (17) is a programming device that controls the components to be controlled by receiving commands from the electronic device (5), receives data from the sensors and transmits it to the electronic device (5), and has programmable digital-analog inputs and outputs in which the irrigation and fertilization algorithm (4) is run. The wing Wi-Fi module (18) is the module that enables data exchange to be carried out wirelessly on the wing (2) side and can be used as Wi-Fi bridge-wing (2) 24 VDC POE. The fertilizer tank (19) is the storage tank that contains the mixture used for fertilization and is positioned on the wing carriage (20). The wing carriage (20) is the platform that houses the wing (2) and control elements that perform proportional irrigation and fertilization. The wing generator (21) is the generator that provides power to the electrically operated components located in the wing (2) section and is used as 3.5 kW 220 VAC single phase in an embodiment of the invention. The variable rate dosing pumps (22) are used to proportion the fertilizer, preferably used 1 for each part of the wing (2), 4 in total, and is a 60W 380V pump that doses max. 60 Liters / hour. The proportional water valves (23) are the valves that are used to proportion the irrigation water, and 1 for each part of the wing (2), 4 in total, capable of irrigation of 1 1 / 4" 12-30 VDC max. 16 tons / hour. The water flow sensor (24) is the flow meter used to calculate the amount of water passing instantly and in total during irrigation, and in an embodiment of the invention, it is used as DN32 12-24VDC Pulse 1.5-15m3 / h 32 Bar. The fertilizer flow sensor (25) is used to calculate the amount of liquid fertilizer passed instantly and in total when fertilizing is performed, and in an embodiment of the invention, 1 / 4" 4-26VDC Pulse 0.5-100 Liter / hour 32 Bar is used. The GSM module (26) is the module that provides the necessary communication to automatically start the water pump when the irrigation cycle starts and to automatically stop the water pump when the irrigation cycle ends, with the help of GSM lines, and there are 2 modules on the drum (3) and the water pump. The GPS module (27) is the module that enables the instantaneous position of the wing (2) on two axes to be determined. The driver (28) is the component that is located in the main control panel (6) and all panels, enables the control of pumps and motors, and performs proportional fertilization by controlling the fertilizer pumps.

[0055] The variable rate drum fertigation machine (1) is used in the field of application of both drum (3) irrigation machine and irrigation and fertilization at the same time in accordance with precision agriculture technique. It can accurately and instantly determine the constantly changing water and fertilizer requirements within the field and apply the correct amounts withhigh resolution. The need for a fertigation system integrated with a data-based cloud infrastructure led to the development of this machine.

[0056] The variable rate drum fertigation machine (1) is a modification of the traditional drum (3) irrigation machine (Figure 1, Figure 2). Thus, the machine spray arm is divided into 4 sections that can be controlled separately. As a result, the machine can apply the necessary water and fertilizer within the field separately in four sections of approximately 11 m width. For the modification of the variable rate drum fertigation machine (1), the following steps were implemented on the present drum irrigation machine (3):

[0057] • Development of a four-section controllable boom to improve precision resolution, • Integration of variable rate fertilizer application system,

[0058] • Development of cloud infrastructure to manage data transmission and create accessible fertilization maps,

[0059] • Development of control system to control water and fertilizer rates across four sections of the boom.

[0060] The following processes can be performed with the variable rate drum fertigation machine (1):

[0061] - Instantly measuring the pressure of the water entering the machine with a pressure sensor and protecting the mechanical / hydraulic system,

[0062] - Adjusting the speed of the wing carriage (20) infinitely with the variable speed electric motor (8),

[0063] - Providing the necessary power to all electrical consumers on the drum (3) with the drum generator (7) on the fixed unit,

[0064] - Providing the necessary power to all electrical consumers in the mobile unit with the wing generator (21) on the wing carriage (20),

[0065] - Automatically stopping at the end of the fertigation strip with the limit switch (12), - Automatically adjusting the required irrigation water in each wing (2) with proportional water valves (23),

[0066] - Ensuring that the amount of water and fertilizer applied is compared with the set value using flow sensors and correct application is achieved through feedback,

[0067] - Applying the amount of liquid fertilizer to be mixed into the irrigation water separately in each wing (2) with variable rate dosing pumps (22),

[0068] - Managing the entire control system with electronic devices (5) (Industrial computers- PC) and creating user-friendly software menus,Injecting the desired amount of fertilizer into the irrigation water in the relevant wing (2) at the right time with the liquid fertilizer tank (19) mounted on the wing car (20).

[0069] The working principle of the variable rate drum fertigation machine (1) is as follows:

[0070] An industrial portable computer-electronic device (5) (PC) (OVIS / OVPPC-156C-i572) (5) was mounted in the human-machine interface to control all subsystems by providing and displaying data flow. A programmable logic controller-PLC (17) (preferably Siemens 1200 / SM 1231) was used to enable all controls by providing data transmission using sensor modules. The ground speed of the wing (boom) carriage unit was designed to be independent of the hose winding on the drum (3). Therefore, a variable-speed electric motor (8) (preferably VOLT / VM 112-4) was integrated into the gearbox (9) on the drum (3). A frequency inverter (Siemens / Sinamics V20) was placed into the main control panel (6) to control the speed of the electric motor (8) and hence the ground speed of the boom-wing carriage (20). The variable speed drive (28) (VSD) extended the ground speed range of the existing machine by allowing the ground speed to be varied from 0.1 to 1.8 m / s. A speed increase / decrease range of 0.1 m / s was obtained for ground speed adjustments with the variable speed driver (28).

[0071] The PLC (17) controls the components and receives data by receiving commands from the electronic device (5), as well as receiving data from sensors using its modules. Thus, it performs the necessary controls in the background by enabling data exchange. The GSM (Global System for Mobile Communications) module (26) (preferably TELTONIKA Networks / RUT240) is used to start and stop the water pump by communicating with the panel-main control panel (6) on the drum (3) side with the help of the GSM module (26). A wing Wi-Fi module (18) and drum Wi-Fi module (14) (preferably Ruijie|Reyee / RG-EST350 V2) are used to enable wireless data exchange on the Boom-Wing (2) and drum (3) sides. A limit switch (12) (EMAS / E251518) is used to signal the end of the irrigation cycle to the system and ensures that the system automatically stops at the end of the irrigation strip. A pressure gauge (10) (4-20 mA, Trafag / ECT16.0 A Type 8472) is installed on the main irrigation pipe entering the drum (3) to provide real-time data for use by the main controller. According to the manufacturer's practice, the water pressure in the drum (3) components during irrigation should not exceed 7 bar. In this study, the pressure was set to 6 bar during the development of the software so that the control system can apply the desired fertilization rates by adjusting other parameters such as ground speed and the opening speed of the valves or dosing pumps (22). While the encoder (preferably Electron / ENK-1-1-P) (13) provides determining the instantaneous position of the wing (2) in the field, a GPS module (27) (preferably GNSS, APM / M8N 8M) receiver is used to determine the position of theboom-wing (2) centerline. The position of the wing (2) is precisely determined in the field using a distance encoder and the position data is kept in the system when the system starts working. A 7.5 kW drum generator (380 VAC 50 Hz and 220 VAC 50 Hz, TMG Power / GG9500E-3) (7) was used to meet the power needs of all components on the drum (3) of the VR-HFM.

[0072] The variable rate water valves (preferably VFA Electronic, VFModulat, EA200050) were installed at the outlet of each section in the wing carriage (20), followed by turbine type water flow rate (flow) sensors (preferably VFQTLD-032T). The four fertilizer dosing pumps (22) (60W 380V Max. 60 l / h) were mounted on both sides of the carriage to facilitate the injection of liquid fertilizer directly into the relevant water transmission line. For automatic control of fertilizer rates, a fertilizer flow sensor (25) (Fertilizer flow meters 1 / 4" 4-26VDC Pulse 0.5-100 l / h 32 Bar) was installed in front of the proportional water flow valves on each water pressure line. The fertilizer pump frequency inverters (0.37 kW 220VAC Siemens / Sinamics V20) control the liquid fertilizer dosing pumps (22) and provide variable rate fertilization by adjusting the speed of the pump motors through frequency control. The fertilizer control devices detect instantaneous liquid fertilizer flow rates using fertilizer flow sensors (25) and send instantaneous and total liquid fertilizer amount information to the main control panel (6).

Claims

CLAIMS1. A variable rate drum fertigation machine (1) comprising:• an electronic device (5) that allows all electrically controllable components to be controlled and all data flow to be carried out through it,• a pressure gauge (10) that detects the water pressure in the main line of the main controller,• a limit switch (12) that detects and notifies the end of the irrigation cycle,• a fertilizer tank (19) containing the mixture used for fertilization,• a water flow sensor (24) that is used to calculate the total and instantaneous amount of water passing during irrigation,• a fertilizer flow sensor (25) that is used to calculate the total and instantaneous amount of liquid fertilizer during fertilizationand that is used to carry out agricultural irrigation and liquid fertilization processes simultaneously and automatically, enabling the automatic preparation of irrigation water for the entire field with high resolution, and enabling the liquid fertilizer and irrigation water to be adjusted in the right place, in the right amount and instantly, characterized by comprising:• at least one wing (2) that provides proportional irrigation and fertilization thanks to the nozzles on it,• a wing (2) that performs proportional irrigation and fertilization and a wing carriage (20) that houses the control elements,• a drum (3) that holds the water hose wrapped around it and enables the movement of the wing (2) and the wing carriage (20),• a main control panel (6) that is located in the drum (3) section, contains the control mechanisms and switchgear components necessary to control the electrically operated components,• drivers (28) that are located in the main control panel (6) and in all panels, enabling the pumps and motors to be controlled,• an electric motor (8) that has a variable speed drive and is controlled by the driver (28) in the main control panel (6) located in the drum (3), provides rotational movement to the drum (3) and controls the wing (2) speed, • a gearbox (9) that enables the drum (3) to rotate with the drive it receives from the electric motor (8),• at least one variable rate dosing pump (22) that is used to proportion the fertilizer in the fertilizer tank (19),• at least one proportional water valve (23) that is used to proportion the irrigation water,• an encoder (13) that is used to determine the position of the wing (2) on the linear axis,• a PLC (17) that has programmable digital-analog inputs and outputs, which operates the irrigation and fertilization algorithm (4), controls the components to be controlled by receiving commands from the electronic device (5), receives data from the sensors and transmits it to the electronic device (5), • an irrigation and fertilization algorithm (4) that receives information from all sensors in the field through the software it runs, creates an irrigation map and a fertilization map using the information received, and can automatically perform proportional irrigation via the proportional water valve (23) and fertilization via the variable-rate dosing pump (22) according to need by enabling the irrigation and fertilization map created as a result of the analysis to be retrieved from the cloud or manually,• a pressure indicator (11) that is located on the electronic device (5) and allows the pressure value to be displayed after the signal sent by the pressure gauge (10) is evaluated at the PLC (17) analog inputs,• a process control device (16) that performs process control, detects the instantaneous passing water amount by means of water flow sensors (24) and sends the instantaneous and total water amount information to the main control panel (6) via wired or wirelessly, detects the instantaneous passing liquid fertilizer amount by means of fertilizer flow sensors (25) and sends the instantaneous and total liquid fertilizer amount information to the main control panel (6) via wired or wirelessly and communicates with the electronic device (5),• a process control panel (15) that is positioned on the wing (2), controls the instantaneous water and fertilizer amounts thanks to the limit switch (12), process control devices (16) and drivers (28), provides data flow to the main processor and executes the incoming commands.

2. The variable rate drum fertigation machine (1) according to claim 1 , characterized by comprising a drum generator (7) that provides power to the electrically operated components located in the drum (3) section.

3. The variable rate drum fertigation machine (1) according to claim 1 , characterized by comprising a drum Wi-Fi module (14) that enables data exchange to be carried out wirelessly on the drum (3) side.

4. The variable ratio drum fertigation machine (1) according to claim 1, characterized by comprising a wing generator (21) that provides power to the electrically operated components located in the wing (2) section.

5. The variable rate drum fertigation machine (1) according to claim 1 , characterized by comprising a wing Wi-Fi module (18) that enables data exchange to be carried out wirelessly on the wing (2) side.

6. The variable rate drum fertigation machine (1) according to claim 1 , characterized by comprising a GSM module (26) located on the drum (3) and the water pump, which provides the necessary communication to automatically start the water pump when the irrigation round starts and to automatically stop the water pump when the irrigation round ends, with the help of GSM lines.

7. The variable rate drum fertigation machine (1) according to claim 1 , characterized by comprising a GPS module (27) that enables the instantaneous position of the wing (2) on two axes to be determined.

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