METHOD FOR PLANNING AND / OR EXECUTING A FERTILIZATION PROCESS

Description

[0001] The invention relates to a method for planning and / or carrying out a fertilization process according to the preamble of patent claim 1.

[0002] When applying fertilizer to agricultural land, it is often necessary to apply a variety of different nutrients. Fertilizer mixtures consisting of at least two types of fertilizer are often used to apply different nutrients.

[0003] With certain fertilizer mixtures, the different fertilizer types often exhibit different throwing and / or flight characteristics, resulting in a separation of the fertilizer types immediately after the fertilizer mixture is released. This separation can be due, for example, to different grain sizes and / or weights of the fertilizer types, resulting in different acceleration values ​​and flight paths.

[0004] To address this problem, DE 10 2014 108 561 A1 proposes using image analysis to determine the distribution of fertilizer granules in order to determine the degree of segregation or the degree of change in the originally homogeneous mixture of a mixed fertilizer after spreading. EP 3 017 681 A1 discloses a method according to the preamble of claim 1.

[0005] Although it is already possible to detect misapplication, there is still no practical solution to overcome this problem. Optimizing application results by using fertilizer mixtures with similar dispersal and / or flight characteristics is only possible to a limited extent and leads to a significant limitation in the selection of suitable fertilizer types.

[0006] The object of the present invention is therefore to simplify the homogeneous application of at least two nutrients in the context of a fertilization process.

[0007] The object is achieved by a method of the type mentioned at the outset, wherein a second application process is planned and / or carried out according to the characterising features of claim 1.

[0008] The invention takes advantage of the finding that the unevenness in nutrient distribution generated during a first application process can be significantly reduced by a second application process if the unevenness in nutrient distribution generated by the first application process is known before the second application process. By appropriately selecting the compensating fertilizer and suitably adapting the discharge characteristics, the uniformity in nutrient distribution can be significantly increased by the second application process. In contrast to known approaches, no attempt is made to apply a fertilizer mixture in a first application process whose fertilizer types exhibit the lowest possible segregation. Rather, the incorrect application during the first application process is tolerated and compensated for by an appropriately adapted second application process.This significantly reduces yield losses due to uneven nutrient distribution.

[0009] Preferably, the second application process is planned and / or carried out before the planning and / or execution of the first application process. The irregularities in the nutrient distribution are preferably based on the different throwing and / or flight characteristics of the fertilizer types in the fertilizer mixture. The method according to the invention readily allows the application of a fertilizer mixture comprising a powdered fertilizer type and a coarse-grained fertilizer type. The compensating fertilizer can, for example, be a single-nutrient fertilizer or a multi-nutrient fertilizer. Furthermore, the compensating fertilizer can be a fertilizer mixture. In particular, the compensating fertilizer can be the fertilizer mixture whose application was planned and / or carried out during the first application process.

[0010] In a preferred embodiment of the method according to the invention, planning and / or executing the first application process comprises adding or selecting a fertilizer mixture and / or adding or selecting at least two types of fertilizer in the fertilizer mixture. The adding or selecting of the fertilizer mixture and / or the at least two types of fertilizer in the fertilizer mixture can be performed on the agricultural spreading machine, the tractor or carrier machine of the agricultural spreading machine, or from an external device, such as a mobile terminal.Preferably, the throwing and / or flight properties of several fertilizer mixtures and / or fertilizer types are stored in a memory, so that by entering or selecting the fertilizer mixture and / or the at least two fertilizer types of the fertilizer mixture, a throwing pattern can be calculated from which irregularities in the nutrient distribution of at least a first nutrient of the fertilizer mixture can be derived.

[0011] In another embodiment of the method according to the invention, the detection of irregularities in the nutrient distribution of at least the first nutrient of the fertilizer mixture according to the planned and / or executed first application process comprises arranging one or more collecting containers on a test area, carrying out a test application of the fertilizer mixture on the test area and / or evaluating the contents of the one or more collecting containers after carrying out the test application.In particular, if the dispersal and / or flight characteristics of the fertilizer mixture or of the at least two fertilizer types in the fertilizer mixture are unknown, or if a deviation from the known dispersal and / or flight characteristics is to be expected due to external influences, such as moisture, the test application of the fertilizer mixture allows the detection of unevenness in the nutrient distribution, which ultimately results from the different dispersal and / or flight characteristics of the at least two fertilizer types in the fertilizer mixture. The number and spacing of the collection containers used on the test area can be adjusted to ensure the accuracy of the detection of unevenness by evaluating the contents of the collection containers after the test application.The accuracy of detecting irregularities in nutrient distribution increases with an increasing number of evaluated collection containers and with a decreasing distance between neighboring collection containers on the sample area.

[0012] In a further development of the method according to the invention, the detection of irregularities in the nutrient distribution of at least the first nutrient in the fertilizer mixture according to the first application process carried out comprises carrying out a spectral analysis of the plant population before or during the planning and / or execution of the second application process. The reflection properties of plant populations are influenced, among other things, by their nutrient status. For example, during the spectral analysis of the plant population, the sunlight reflected by the plants is recorded. By comparing this with the directly incident sunlight, the analysis can be carried out under different and / or changing lighting conditions. The data generated by the light measurement can then be transmitted to a spectrometer, which performs a spectral decomposition and analyzes the data accordingly.For example, the nitrogen nutritional status of crops can be recorded and / or monitored. If unevenness in the nutritional status of a crop is detected, this is usually due to uneven nutrient distribution. In this case, compensatory fertilization can be carried out and / or planned to reduce the uneven nutrient distribution.

[0013] Furthermore, a method according to the invention is preferred in which the detection of irregularities in the nutrient distribution of at least the first nutrient in the fertilizer mixture according to the planned and / or executed first application process involves the provision of spreading parameters that influence fertilizer ejection for an evaluation device, the provision of throwing and / or flight characteristics of the fertilizer mixture for an evaluation device, and / or the provision of throwing and / or flight characteristics of the at least two types of fertilizer for an evaluation device. The spreading parameters of the distributor machine that influence fertilizer ejection include, for example, the rotation speed of the spreading disc, the orientation or arrangement of throwing blades, the point at which the fertilizer is applied to the spreading disc, or the amount of fertilizer.The dispersal and / or flight characteristics of the fertilizer mixture and / or the at least two types of fertilizer can include their structure, their grain weight, their grain shape, and / or their grain density. The dispersal and / or flight characteristics of the fertilizer mixture and / or the at least two types of fertilizer can include their quantity distribution under specified spreading parameters.

[0014] In an advantageous development of the method according to the invention, the detection of irregularities in the nutrient distribution of at least the first nutrient of the fertilizer mixture according to the planned and / or executed first application process comprises calculating the irregularities in the nutrient distribution of at least the first nutrient of the fertilizer mixture, taking into account the provided spreading parameters, the provided throwing and / or flight characteristics of the fertilizer mixture, and / or the provided throwing and / or flight characteristics of the at least two fertilizer types by the evaluation device. For example, the calculation of irregularities in the nutrient distribution of at least the first nutrient of the fertilizer mixture is carried out on the basis of one or more calculation formulas.

[0015] In a further embodiment of the method according to the invention, carrying out the second application process comprises displaying the nutrient distribution of at least the first nutrient in the fertilizer mixture in accordance with the planned and / or executed first application process. The nutrient distribution of at least the first nutrient in the fertilizer mixture can be displayed, for example, using a display or touchscreen, wherein the display or touchscreen can be part of the agricultural distribution machine, part of a machine pulling or carrying the agricultural distribution machine, or part of an external device, for example a mobile device. The nutrient distribution of at least the first nutrient in the fertilizer mixture can be displayed, for example, in list form or in the manner of a topographical map.Alternatively or additionally, planning and / or executing the second spreading operation includes displaying a suggested tramline for the second spreading operation. The suggested tramline allows an offset tramline to be used to compensate for the unevenness. This is particularly advantageous if the compensating fertilizer corresponds to the previously applied fertilizer mixture. Alternatively or additionally, planning and / or executing the second spreading operation includes displaying a suggested setting for the spreading parameters of the distributor for the second spreading operation. Setting the spreading parameters serves to adapt the lateral distribution and thus to compensate for the incorrect application of the fertilizer mixture tolerated during the first spreading operation.The setting suggestion for the spreading parameters of the spreading machine may, for example, include a suggestion for the rotation speed of the spreading disc and / or a suggestion for the orientation of one or more throwing vanes arranged on the spreading disc.

[0016] Also preferred is a method according to the invention in which the execution of the second application process comprises generating a control signal for adjusting spreading parameters of the spreading machine based on the detected unevenness in the nutrient distribution, automatically adjusting spreading parameters of the spreading machine based on the generated control signal, and / or automatically controlling the spreading machine or a machine carrying or pulling the spreading machine to maintain a tramline suitable for reducing the detected unevenness. By automatically adjusting spreading parameters of the spreading machine and / or automatically controlling the spreading machine or the machine carrying or pulling the spreading machine, the convenience of carrying out the fertilization process is further increased, since the necessary interventions by a machine operator are reduced.Furthermore, the detected irregularities can be compensated to an even greater extent by applying the compensating fertilizer in this way, since incorrect settings of the spreading parameters of the spreading machine by a machine operator and / or control errors by a machine operator are excluded.

[0017] The method according to the invention is further advantageously developed in that the adaptation of spreading parameters of the distribution machine comprises setting a suitable rotation speed of the spreading disc to reduce the detected unevenness in the nutrient distribution and / or setting a suitable arrangement and / or orientation of one or more throwing blades arranged on the spreading disc to reduce the detected unevenness in the nutrient distribution. By increasing the rotation speed of the spreading disc, for example, the discharge distance can be increased. By reducing the rotation speed of the spreading disc, for example, the discharge distance can be reduced. By adjusting the arrangement and / or orientation of one or more throwing blades, the quantity distribution over the discharge distance can be adapted.Typically, the applied fertilizer quantity decreases with increasing distance from the agricultural spreading machine, so that the quantity distribution in the transverse direction corresponds to a triangular shape. Other transverse distribution characteristics can also be implemented, in particular by adjusting the arrangement and / or orientation of the throwing vanes. Alternatively or additionally, adjusting the spreading parameters of the spreading machine includes setting a suitable drop point for the compensating fertilizer on the spreading disc to reduce the detected unevenness in nutrient distribution and / or setting a suitable amount of compensating fertilizer to reduce the detected unevenness in nutrient distribution. The discharge characteristics can also be influenced by setting a suitable drop point for the compensating fertilizer on the spreading disc.The setting of a suitable amount of compensating fertilizer to reduce the detected unevenness in the nutrient distribution is preferably carried out via an automatic control of a dosing device of the agricultural distribution machine.

[0018] In the method according to the invention, when planning and / or executing the first application, it is already taken into account that the second application will be necessary to reduce unevenness in the nutrient distribution. This means that the spreading parameters of the distributor are already adjusted for the first application in such a way that a maximum reduction of unevenness can be achieved in the second application. The composition of the fertilizer mixture can already be adjusted for the first application in such a way that a maximum reduction of unevenness can be achieved in the second application.Furthermore, the machine operator can also be informed that the application of a selected fertilizer mixture in the first application process is disadvantageous, for example because the throwing and / or flight properties of the fertilizer types are too different and the irregularities cannot be sufficiently compensated in a second application process.

[0019] Also advantageous is an agricultural distribution machine comprising a distribution device for applying fertilizer and an evaluation device configured to detect irregularities in the nutrient distribution of at least one first nutrient in a fertilizer mixture according to a planned and / or executed first application process for applying the fertilizer mixture, wherein the agricultural distribution machine is configured to carry out the method for planning and / or executing a fertilization process according to one of the embodiments described above. Regarding the advantages and modifications of the agricultural distribution machine according to the invention, reference is first made to the advantages and modifications of the method according to the invention.

[0020] In a preferred embodiment, the agricultural distribution machine has a dispensing device configured to dispense, in particular, display, the nutrient distribution of at least the first nutrient of the fertilizer mixture according to the planned and / or executed first application process, to dispense, in particular, display, a suggested tramline for the second application process, and / or to dispense, in particular, display, a suggested setting for the spreading parameters for the second application process. In particular, the dispensing device is configured as a display or touchscreen.The output device can, for example, be a component of a mobile device, so that the nutrient distribution of at least the first nutrient, the suggested tramline for the second spreading operation, and / or the suggested setting for the spreading parameters for the second spreading operation can be displayed to the machine operator in the cab of a machine pulling or carrying the agricultural spreading machine. Alternatively, by displaying the nutrient distribution of at least the first nutrient, the suggested tramline for the second spreading operation, and / or the suggested setting for the spreading parameters for the second spreading operation on a mobile device, the second spreading operation can be planned remotely from the agricultural spreading machine, for example, at a farmer's premises.

[0021] In another preferred embodiment of the agricultural spreading machine, the evaluation device is configured to generate a control signal for adjusting spreading parameters of the agricultural spreading machine based on the detected irregularities in the nutrient distribution of at least the first nutrient in the fertilizer mixture. For this purpose, the evaluation device can be configured to determine, based on the detected irregularities in the nutrient distribution of at least the first nutrient in the fertilizer mixture and the throwing and / or flight characteristics of the compensating fertilizer, a rotation speed of the spreading disc suitable for the second spreading process, an orientation or arrangement of throwing blades suitable for the second spreading process, a drop point of the fertilizer onto the spreading disc suitable for the second spreading process, and / or a fertilizer quantity suitable for the second spreading process.

[0022] Furthermore, an agricultural spreading machine is preferred which has a control device which is configured to automatically adapt spreading parameters of the agricultural spreading machine on the basis of the generated control signal and / or to automatically control the spreading machine or a machine pulling or carrying the spreading machine in order to maintain a tramline suitable for reducing the detected irregularities in the nutrient distribution.

[0023] Further details of the invention can be found in the description of the figures and the drawings. Fig. 1 shows an agricultural distribution machine during the execution of a first application process for applying a fertilizer mixture according to the invention in a schematic representation; Fig. 2 shows the agricultural distribution machine from the Fig. 1 during the inventive execution of a second spreading operation for applying a compensating fertilizer in a schematic representation; Fig. 3 an agricultural spreading machine during the inventive execution of a first spreading operation for applying a fertilizer mixture in a schematic representation; and Fig. 4 the agricultural spreading machine from the Fig. 3 during the inventive execution of a second application process for applying a compensating fertilizer in a schematic representation.

[0024] The Fig. 1 and the Fig. 2 show an agricultural spreading machine 100 performing a fertilization process on a field 28.

[0025] In the Fig. 1 The agricultural distribution machine 100 performs a first application process 10 to apply a fertilizer mixture 14. The fertilizer mixture 14 comprises two types of fertilizer 16a, 16b. The first type of fertilizer 16a comprises a first nutrient, and the second type of fertilizer 16b comprises a second nutrient, wherein the first nutrient of the first type of fertilizer 16a differs from the second nutrient of the second type of fertilizer 16b. Consequently, two different nutrients are applied by the fertilizer mixture 14.

[0026] The granules of fertilizer type 16a are smaller and lighter than the granules of fertilizer type 16b, so that the fertilizer types 16a, 16b have different throwing and flight characteristics. During the first spreading process 10, the spreading parameters of the distributor 100 that influence the fertilizer ejection are set such that the nutrient distribution 18a of the first nutrient exhibits irregularities 20a-20e and the nutrient distribution 18b of the second nutrient exhibits no irregularities. The spreading parameters of the distributor 100 that influence the fertilizer ejection include, for example, the rotation speed of the spreading disc, the orientation of the throwing blades arranged on the spreading disc, the point at which the fertilizer is applied to the spreading disc, and the amount of fertilizer.

[0027] The applied amount of the first nutrient decreases continuously with the applied amount of the first fertilizer type 16a as the distance from the respective tramline 22a-22e increases, down to zero. However, the first fertilizer type 16a is not ejected sufficiently far, resulting in an uneven distribution of the first fertilizer 18a and thus also of the first nutrient when driving along the tramlines 22a-22e.

[0028] The applied amount of the second nutrient decreases continuously, corresponding to the applied amount of the second fertilizer type 16b, with increasing distance from the respective tramline 22a-22e to the adjacent tramline 22a-22e, down to zero. When driving along the tramlines 22a-22e, this results in a uniform distribution of the second fertilizer 18b and thus also of the second nutrient.

[0029] The unevennesses 20a-20e in the nutrient distribution 18a of the first nutrient ultimately lead to a yield loss, so these unevennesses 20a-20e must be compensated.

[0030] For this purpose, the agricultural distribution machine 100 has an evaluation device and a control device.

[0031] The evaluation device of the agricultural distribution machine 100 is configured to detect irregularities 20a-20e in the nutrient distribution 18a, 18b of the applied nutrients of the fertilizer mixture 14 and to generate a control signal for adjusting the spreading parameters of the agricultural distribution machine 100 based on the detected irregularities 20a-20e in the nutrient distribution 18a, 18b of the applied nutrients of the fertilizer mixture 14.

[0032] The control device is configured to automatically adapt the spreading parameters of the agricultural spreading machine 100 on the basis of the generated control signal and to automatically control the spreading machine 100 to maintain a tramline 22a-22e, 26a-26d suitable for reducing the detected irregularities 20a-20e in the nutrient distribution 18a, 18b of the applied nutrients of the fertilizer mixture 14.

[0033] In this case, the evaluation device of the agricultural distribution machine 100 detected irregularities 20a-20e in the nutrient distribution 18a of the first nutrient in the fertilizer mixture 14. To detect the irregularities 20a-20e in the nutrient distribution 18a of the first nutrient in the fertilizer mixture 14, after adjusting the spreading parameters to the throwing and flight characteristics of the second fertilizer type 16b in the fertilizer mixture 14, several collection containers were set up on a test area, and a test application of the fertilizer mixture 14 was carried out on the test area. The contents of the collection containers were then evaluated by the evaluation device, for example, using an image evaluation routine. The nutrient distributions 18a, 18b of the first nutrient and the second nutrient in the fertilizer mixture 14 were recorded from the distribution of the first fertilizer type 16a and the second fertilizer type 16b in the collection containers.

[0034] Optionally, the recorded nutrient distributions 18a, 18b can be displayed graphically to the machine operator via an output device.

[0035] The Fig. 2 shows the agricultural distribution machine 100 performing a second spreading operation 12 for applying a compensating fertilizer 24. The compensating fertilizer corresponds to the first fertilizer type 16a of the fertilizer mixture 14 applied during the first spreading operation. The second spreading operation 12 is carried out in order to reduce the detected irregularities 20a-20e in the nutrient distribution 18a.

[0036] Before carrying out the second spreading operation 12, it was checked whether the spreading parameters of the spreading machine 100 needed to be adjusted for the second spreading operation 12. However, the evaluation of the recorded irregularities 20a-20e showed that compensation can be achieved without adjusting the spreading parameters of the agricultural spreading machine 100, but rather by spreading the compensating fertilizer 24 from offset tramlines 26a-26d. Accordingly, the agricultural spreading machine 100 is Fig. 2 controlled automatically in such a way that the tramlines 26a-26d suitable for reducing the detected irregularities 20a-20e are maintained.

[0037] The compensation of the irregularities 20a-20e in the nutrient distribution 18a could be achieved to a particularly high degree because, when performing the first spreading operation 10, it was already taken into account that the second spreading operation 12 would be necessary to reduce the irregularities 20a-20e in the nutrient distribution 18a. Accordingly, the spreading parameters of the agricultural distribution machine 100 were already adjusted for the first spreading operation 10 such that a maximum reduction of the irregularities 20a-20e can be achieved in the second spreading operation 12.

[0038] As an alternative to the automatic control of the agricultural spreading machine, the machine operator could also have been shown a tramline suggestion for the second spreading process 12 and a setting suggestion for the spreading parameters for the second spreading process 12.

[0039] The Fig. 3 and the Fig. 4 also show an agricultural spreading machine 100 carrying out a fertilizing operation on a field 28.

[0040] In the Fig. 3 The agricultural distribution machine 100 carries out the operation analogously to the Fig. 1 illustrated agricultural distribution machine 100 carries out a first spreading process 10 for spreading a fertilizer mixture 14, wherein the transverse distribution of the first fertilizer type 16a and thus also the transverse distribution of the applied first nutrient differs from that shown in the Fig. 1 shown cross-distribution of the first nutrient.

[0041] In the illustrated embodiment, the machine operator selected the fertilizer mixture 14 to be applied via an input device before performing the first application process. The evaluation device of the agricultural distribution machine then retrieved the throwing and flight characteristics of the fertilizer types 16a, 16b of the selected fertilizer mixture 14 from a memory in order to determine suitable spreading parameters for the uniform application of the second nutrient of the second fertilizer type 16b. Taking into account the throwing and flight characteristics of the first fertilizer type 16a and the determined spreading parameters of the agricultural distribution machine 100, the resulting irregularities 20a-20e in the nutrient distribution 18a of the first nutrient were then calculated.

[0042] The Fig. 4shows the agricultural distribution machine 100 performing a second spreading operation 12 for applying a compensating fertilizer 24. The compensating fertilizer corresponds neither to the first fertilizer type 16a nor to the second fertilizer type 16b of the fertilizer mixture 14 applied during the first spreading operation 10. Rather, the compensating fertilizer 24 is a different fertilizer type, which, however, also contains the first nutrient, which was also a component of the first fertilizer type 16a of the fertilizer mixture 14 applied during the first spreading operation 10. The second spreading operation 12 is carried out in order to reduce the detected irregularities 20a-20e in the nutrient distribution 18a of the first nutrient.

[0043] The agricultural spreading machine 100 now uses the same tramlines 22a-22e as during the first spreading operation 10. However, the spreading parameters of the spreading machine 100 have been adjusted such that a completely different transverse distribution of the compensating fertilizer 24 results. In order to compensate for the calculated unevennesses 20a-20e in the nutrient distribution 18a of the first nutrient in the second spreading operation 12, the rotation speed of the spreading disc, the orientation of two throwing blades arranged on the spreading disc, the point of application of the compensating fertilizer to the spreading disc, and the amount of compensating fertilizer 24 applied to the spreading disc were adjusted accordingly to reduce the unevennesses 20a-20e in the nutrient distribution 18a of the first nutrient.

[0044] The agricultural distribution machine 100 can additionally be configured to perform a spectral analysis of the crop before or during the execution of the second application process 12. Since the reflection properties of crops are influenced by the nutrient nutritional status, irregularities in the nutrient distribution can be detected, for example, by evaluating light measurements and taken into account when applying the compensating fertilizer. List of reference symbols

[0045] 10First application 12Second application 14Fertilizer mixture 16a, 16bFertilizer types 18a, 18bNutrient distribution 20a-20eUnevenness 22a-22eTramlines 24Compensation fertilizer 26a-26dTramlines 28Field 100agricultural distribution machine

Claims

1. Method for planning and / or executing a fertilization process, comprising the steps of: - planning and / or executing a first application process (10) for applying a fertilizer mixture (14) comprising at least two types of fertilizer (16a, 16b), the fertilizer mixture (14) comprising at least two nutrients; and - detecting irregularities (20a-20e) in the nutrient distribution (18a, 18b) of at least one first nutrient of the fertilizer mixture (14) according to the planned and / or executed first application process (10) using an evaluation device; characterized by the step of: - planning and / or executing a second application process (12) for applying a compensating fertilizer (24) for reducing the detected irregularities (20a-20e) in the nutrient distribution (18a, 18b), the compensating fertilizer (24) comprising at least the first nutrient, it being taken into account when planning and / or executing the first application process (10) that the second application process (12) will be necessary for reducing irregularities (20a-20e) in the nutrient distribution (18a, 18b) and the spreading parameters of a distribution machine already being adapted for the first application process in such a way that a maximum reduction of the irregularities can be achieved in the second application process.

2. Method according to claim 1, characterized in that the planning and / or execution of the first application process (10) comprises at least one of the following steps: - inputting or selecting a fertilizer mixture (14) on an agricultural distribution machine, a tractor or carrier machine of the agricultural distribution machine or from an external apparatus; - inputting or selecting the at least two types of fertilizer (16a, 16b) of the fertilizer mixture (14) on an agricultural distribution machine, a tractor or carrier machine of the agricultural distribution machine or from an external apparatus.

3. Method according to claim 1 or 2, characterized in that the detection of irregularities (20a-20e) in the nutrient distribution (18a, 18b) of at least the first nutrient of the fertilizer mixture (14) according to the planned and / or executed first application process (10) comprises at least one of the following steps: - arranging one or more collection containers on a sample area; - executing a sample application of the fertilizer mixture (14) on the sample area; - evaluating the contents of the one or more collection containers after executing the sample application.

4. Method according to any of the preceding claims, characterized in that the detection of irregularities (20a-20e) in the nutrient distribution (18a, 18b) of at least the first nutrient of the fertilizer mixture (14) according to the executed first application process (10) comprises the following step: - executing a spectral analysis of the crop before or during the planning and / or execution of the second application process (12).

5. Method according to any of the preceding claims, characterized in that the detection of irregularities (20a-20e) in the nutrient distribution (18a, 18b) of at least the first nutrient of the fertilizer mixture (14) according to the planned and / or executed first application process (10) comprises at least one of the following steps: - providing spreading parameters of the distribution machine, which influence the fertilizer ejection, for an evaluation device; - providing throwing and / or flight properties of the fertilizer mixture (14) for an evaluation device; - providing throwing and / or flight properties of the at least two types of fertilizer (16a, 16b) for an evaluation device.

6. Method according to claim 5, characterized in that the detection of irregularities (20a-20e) in the nutrient distribution (18a, 18b) of at least the first nutrient of the fertilizer mixture (14) according to the planned and / or executed first application process (10) comprises the following step: - calculating the irregularities (20a-20e) in the nutrient distribution (18a, 18b) of at least the first nutrient of the fertilizer mixture (14) taking into account the provided spreading parameters, the provided throwing and / or flight properties of the fertilizer mixture (14) and / or the provided throwing and / or flight properties of the at least two types of fertilizer (16a, 16b) using the evaluation device.

7. Method according to any of the preceding claims, characterized in that the execution of the second application process (12) comprises at least one of the following steps: - displaying the nutrient distribution (18a, 18b) of at least the first nutrient of the fertilizer mixture (14) according to the planned and / or executed first application process (10); - displaying a travel path suggestion for the second application process (12); - displaying a setting suggestion for the spreading parameters of the distribution machine (100) for the second application process (12).

8. Method according to any of the preceding claims, characterized in that the execution of the second application process (12) comprises at least one of the following steps: - generating a control signal for adjusting spreading parameters of the distribution machine (100) on the basis of the detected irregularities (20a-20e) in the nutrient distribution (18a, 18b); - automatically adjusting spreading parameters of the distribution machine (100) on the basis of the generated control signal; - automatically controlling the distribution machine (100) or a machine carrying or pulling the distribution machine (100) to maintain a travel path (22a-22e, 26a-26d) suitable for reducing the detected irregularities (20a-20e).

9. Method according to claim 8, characterized in that the adjustment of spreading parameters of the distribution machine (100) comprises at least one of the following steps: - setting a suitable rotation speed of a throwing disk to reduce the detected irregularities (20a-20e) in the nutrient distribution (18a, 18b); - setting a suitable arrangement and / or orientation of one or more throwing blades arranged on a throwing disk to reduce the detected irregularities (20a-20e) in the nutrient distribution (18a, 18b); - setting a suitable application point of the compensating fertilizer on a throwing disk to reduce the detected irregularities (20a-20e) in the nutrient distribution (18a, 18b); - setting a suitable amount of compensating fertilizer (24) to reduce the detected irregularities (20a-20e) in the nutrient distribution (18a, 18b).

10. Method according to any of the preceding claims, characterized in that the composition of the fertilizer mixture for the first application process is adjusted in such a way that a maximum reduction of irregularities can be achieved in the second application process.

11. Method according to any of the preceding claims, characterized in that the machine operator is informed that the application of a selected fertilizer mixture in the first application process is disadvantageous because the throwing and / or flight properties of the fertilizer types are too different and the irregularities cannot be sufficiently compensated in a second application process.