JP2008064689A - Spread agricultural chemical amount distribution determination method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spread agricultural chemical amount distribution determination method for accurately determining spread agricultural chemical amount distribution in and out a farm field, and further, obtaining a measurement result not affected by natural conditions, etc. <P>SOLUTION: This method is used for determining the distribution of amounts of the agricultural chemical spread in and out the farm field after the spreading of the agricultural chemical. In this method, a plurality of determination bodies 1 each having a non-water absorbing planate measurement plate 2 are placed at measurement points in and out the farm field to measure the amount of agricultural chemical deposited on the surface of each measurement plate 2 by using an analyzer. Besides, the determination bodies 1 are each formed so that the measurement plate 2 is disposed in an upward posture (horizontally) by means of an angle adjustment part 5, the measurement plate 2 is formed out of a member of rigidity, and the measurement plate 2 is supported so that its preset height can be changed by a height adjustment part 6. Moreover, a leg part 7 of each determination body 1 is formed so as to have prescribed weight and so as to comprise a position fixing means. Besides, each determination body 1 is formed so as to have ID information severally. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for determining a distribution of a spray amount when spraying an agrochemical. More specifically, the present invention relates to a technique for predicting and calculating the mass of pesticide per unit area by measuring the mass of the pesticide adhering to the pesticide adhesion surface of the judgment object installed inside and outside the field with an optical analysis technique.

In recent years, with the amendment of the Food Sanitation Law, attention has been focused on residual agricultural chemicals in agricultural crops in response to the establishment of strict residual agricultural chemical reference values for some agricultural crops. Therefore, appropriate pesticide spraying and accurate measurement of residual pesticide values at the time of shipment are required.
When spraying pesticides, spraying concentrates on a specific part of the field, the amount of spraying increases, the residual pesticide value at the time of harvest becomes larger than the reference value, and shipping can not be performed, and gusty wind etc. If the agrochemicals are scattered outside the field to be sprayed due to natural phenomena, and the so-called drift has caused the pesticides to adhere to the crops just before harvesting, the residual pesticide values may exceed the reference value and cannot be shipped. was there. Therefore, the confirmation of the application status such as the distribution of the amount of agrochemicals and the determination of drift, etc. occupies an important position to avoid such losses.
Conventionally, as a method for confirming the state of spraying, such as the amount of agricultural chemicals and the concentration of agricultural chemicals, at the time of spraying agricultural chemicals and after spraying agricultural chemicals, visual confirmation by an operator or confirmation method using water-sensitive paper has been employed (for example, see Patent Document 1). .
JP 2001-172104 A

However, with the visual confirmation method, it was not possible to determine the exact state of agrochemical adhesion. In addition, the confirmation work was time-consuming.
Moreover, in the confirmation method using the water sensitive paper described in the above-mentioned Patent Document 1, it is difficult to digitize the agricultural chemical adhesion data such as the agricultural chemical application amount and the agricultural chemical concentration. Furthermore, the criterion for determining whether or not the residual agricultural chemical standard value is exceeded after spraying the agricultural chemical is based on the rule of thumb of workers and the like and lacks certainty.
In the confirmation method using water-sensitive paper, not only pesticides but also water is judged to be pesticides, and it cannot respond to the so-called unevenness of pesticide aqueous solution, or the installation angle, installation position, etc. change due to natural conditions such as wind. There was also a problem of falling.
The present invention has been made in view of such problems, and is to provide a method for determining the distribution amount of agricultural chemicals that can accurately determine the distribution amount of agricultural chemicals inside and outside the field and whose measurement results are not affected by natural conditions or the like. .

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in Claim 1, it is a method of determining the distribution amount of agricultural chemicals inside and outside the field after the application of agricultural chemicals, and a determination body having a non-water-absorbing and planar pesticide adhesion surface is used as a measurement location inside and outside the field. A plurality of the pesticides are installed, and the amount of the pesticide adhering to the surface of the determination body is measured using an optical analysis technique.

  According to a second aspect of the present invention, the determination body is arranged such that the agrochemical adhesion surface faces upward.

  According to a third aspect of the present invention, the determination body is formed on the surface of a member having an agrochemical adhesion surface having rigidity.

  In Claim 4, the said determination body is supported so that the setting height of an agrochemical adhesion surface can be changed.

  According to a fifth aspect of the present invention, the determination body has ID information individually.

  In the present invention, the determination body has a predetermined weight.

  According to a seventh aspect of the present invention, the determination body has a position fixing means.

  As effects of the present invention, the following effects can be obtained.

  Since it comprised as Claim 1, it can detect also about agrochemicals, such as colorless and transparent which tends to be overlooked by visual confirmation. In addition, by installing the determination body outside the field, it is possible to confirm the drift situation to the surroundings. In the target field, it is possible to confirm whether the pesticide is attached in the intended amount, and by using an optical analysis technique, the prediction result of the mass of pesticide per unit area can be obtained immediately after measurement. Furthermore, since it has a non-water-absorbing pesticide adhesion surface, it is not affected by the so-called non-uniformity of the pesticide aqueous solution, and the amount of pesticide adhesion can be measured accurately and can be used repeatedly by washing, so that it is economical.

  Since it comprised like Claim 2, in addition to the effect which concerns on Claim 1, it is hard to flow down with respect to the agricultural chemical sprayed from upper direction, and it becomes possible to measure agricultural chemical adhesion correctly.

  According to the third aspect, in addition to the effect according to the first aspect, it is difficult to be deformed when being installed or recovered, and the determination body can be easily installed and handled.

  Since it comprised like Claim 4, in addition to the effect which concerns on Claim 1, a pesticide adhesion surface can be set to the height substantially the same as a crop, and it can detect on substantially the same conditions as the pesticide adhering to a crop.

  Since it is configured as in claim 5, in addition to the effect according to claim 1, there is no mistake when collecting and measuring a plurality of judgment bodies, and the disposition information of the judgment bodies, the dispersal information such as dispersed agricultural chemical data, etc. Processing of data at the time of management can be easily performed, and at the same time, by considering the weather conditions at the time of spraying together, it becomes possible to provide feedback when spraying agricultural chemicals on and after the next time.

  Since it is configured as in claim 6, in addition to the effect according to claim 1, the judgment object is also skipped or moved in position when it is affected by wind affected by unmanned helicopters, etc. Thus, the stability of the judgment object is improved and it can be detected accurately.

  Since it comprised like Claim 7, in addition to the effect which concerns on Claim 1, it becomes possible to install a determination body in a desired location reliably irrespective of land conditions, such as undulation of the ground.

Next, embodiments of the invention will be described.
FIG. 1 is a perspective view of a determination body according to an embodiment of the present invention, FIG. 2 is a schematic view at the time of measurement after spraying agricultural chemicals, and FIG. 3 is a plan view according to an arrangement example of the determination bodies during spraying of agricultural chemicals. .

<Determinant>
First, the structure of the determination body 1 which concerns on one Example of this invention is demonstrated using FIG.

As shown in FIG. 1, the determination body 1 includes a measurement plate 2 having an agrochemical adhesion surface on the upper surface, and a support base 3 that detachably fixes and supports the measurement plate 2. The measuring plate 2 is made of a non-water-absorbing material such as polypropylene (PP) or acrylonitrile-butadiene styrene resin (ABS resin) and is made of a synthetic resin plate or metal plate, glass or ceramics having high chemical resistance. It shall have a sufficient rigidity. However, it is also possible to coat a chemical-resistant substance on the surface of paper, wood, metal plate or the like having sufficient rigidity, to treat the surface, or to stick a film. In addition, the measurement plate 2 is square (square) in the present embodiment in plan view, but the shape is not limited.
The support 3 includes a top plate portion 4, an angle adjustment portion 5, a height adjustment portion 6, a leg portion 7, a first shaft 21, and a second shaft 22. More specifically, a square-shaped top plate portion 4 is disposed on the uppermost portion of the support base 3, and the top plate portion 4 has an upper surface having an area that is substantially the same as or slightly larger than the measurement plate 2, The upper surface is provided with means for fixing the measuring plate 2 easily. For example, L-shaped protrusions 4a, 4a,... Having a predetermined height are provided at the square vertex positions of the measurement plate 2.
And the angle adjustment part 5 is arrange | positioned in the center position lower part of this top-plate part 4 in planar view. A first shaft 21 extends downward from the angle adjuster 5, a second shaft 22 extends further downward, and a height adjuster 6 is disposed at the upper end of the second shaft 22, A leg 7 is disposed at the lower end of the shaft 22.
In addition, it is also possible to fix using a clip etc. instead of the projection parts 4a * 4a .. of the top plate part 4, and the fixing means to the top plate part 4 of the measuring plate 2 is not limited to this embodiment. Absent.

<Top plate angle adjustment>
The angle adjuster 5 can be fixed at an angle by a bolt 5a by disposing a spherical joint below the center position of the top plate 4. Thus, the top plate portion 4 is adjusted and fixedly supported so as to face upward (become horizontal). That is, it supports the pesticide adhering surface of the measuring plate 2 so as to face upward, and ensures the accuracy of the measurement by the judging body 1 regardless of the land conditions such as the inclination of the field. The angle adjuster 5 may be configured to be supported by the rotation fulcrum shafts in the front-rear direction and the left-right direction to fix the fulcrum shafts. The configuration is not limited. The lower part of the angle adjusting unit 5 is fixed to the upper end of the first shaft 21.

<Height adjustment>
The first shaft 21 and the second shaft 22 are hollow, the first shaft 21 is slidably fitted to the second shaft 22, and the height adjustment is arranged at the upper end of the second shaft 22. The part 6 is configured to be fastened and fixed by a bolt 6 a or the like, and the first shaft 21 is adjusted to slide (extend / contract) in the second shaft 22, so that the first shaft 21 is raised relative to the second shaft 22. The height of the top plate portion 4 can be set to a desired height by being fastened and fixed by the height adjusting portion 6. Thus, the set height of the measurement plate 2 can be made substantially the same as that of the agricultural product, and the accuracy of measurement by the determination object 1 is ensured regardless of the height of the agricultural product. Note that the height adjustment unit 6 is not limited to the configuration of the present embodiment as long as the height adjustment within a predetermined range is possible.

<Leg>
The leg portion 7 is fixed to the lower end portion of the second shaft 22 with a bolt or the like, and is constituted by a plurality of ground feet 8, 8,... Extending radially from the lower end portion of the second shaft 22, and the tip portion of each ground foot 8 Has a substantially circular fixing portion 9, and the fixing portions 9, 9... Have holes 9 a, 9 a. The number of the grounding feet 8 may be any number as long as the stability of the determination body 1 can be ensured (for example, three in this embodiment). In addition, a polygonal or disk-like plate-like body can be used as the grounding portion instead of the grounding foot 8, and the structure is not limited as long as it is a so-called stand and can be stabilized.
Preferably, it is preferable to fix to the ground with a pile or the like in order to avoid falling over due to external factors or changing the installation position. The leg portion 7 is not limited to the shape of the embodiment shown in FIG. 1 and can be applied if it has a predetermined weight and can be fixed to the ground.

  Further, ID information is individually added to the determination body 1. That is, an identification member 23 is attached to a position other than the surface of the measurement plate 2 so that each can be identified. The identification member 23 is configured with a number, a barcode, an ID tag, or the like. In the present embodiment, by attaching an ID tag, it is possible to easily confirm the measurement result after spraying. In other words, by writing the data of the application location on the ID tag, the ID tag data is read from the measuring plate 2 to the computer (control means) 11 and stored (stored) at the time of residual pesticide measurement. The pesticide residue data measured in the place is also stored. By processing in this way, it is possible to easily analyze the application state of agricultural chemicals, such as the amount of agricultural chemicals and the distribution of agricultural chemicals, and to store the results and output such as display. Therefore, as will be described later, when the crop is shipped, the agricultural chemical information of the crop can be called up and disclosed from the computer 11, and the consumer's trust can be obtained. Furthermore, if the residual reference value is exceeded, it can be fed back to the next application by investigating the cause and identifying the lot in question.

<Summary>
Since it comprised in this way, when installing the determination body 1 in a measurement location, first, the fixing | fixed part 9 of the leg part 7 is fixed to the ground, and the top-plate part 4 is the crop by the height adjustment part 6 next. Adjust the height so that it is approximately the same height as. Further, the angle adjustment unit 5 is adjusted so that the top plate part 4 is directed upward (horizontal), and finally, the measurement plate 2 with ID tag in which the data of the spraying place is written is fixed to the top plate unit 4. do it. In this way, the determination body 1 can be fixed at a desired installation position in a state suitable for measurement regardless of the state of the ground regardless of the inside or outside of the field. Moreover, it becomes possible to measure the pesticide adhesion surface at an appropriate height and in an appropriate direction regardless of the type of crop, and an accurate measurement of the sprayed pesticide becomes possible.

<Optical analysis technology>
Next, with reference to FIG. 2, an analysis apparatus 10 serving as a measurement means using the optical analysis technique used in the present embodiment and a computer 11 connected to the analysis apparatus 10 will be described.

The analyzer 10 used in this embodiment is a measuring instrument using a Fourier transform infrared spectrophotometer (FT-IR), and the measuring method applies a diffuse reflection method. In this diffuse reflection method, light emitted from a light source passes through an interferometer to become interference light, and the interference light is applied to the subject, and the detection unit detects and detects the diffuse reflected light reflected from the subject. In this method, the diffuse reflection spectrum is quantitatively or qualitatively analyzed.
The computer 11 stores in advance a calibration formula for predicting and calculating the mass of the agricultural chemical to be measured. The calibration formula is obtained in advance by a test or the like. More specifically, the measurement is performed on the measurement plate 2 having a known mass of agricultural chemical attached to the surface, and the diffuse reflection spectrum detected and the agricultural chemical are detected. The relational expression with the mass of is derived. The calibration formula obtained in this way is stored in the computer 11, the agrochemical mass per unit area is predicted and calculated using the calibration formula at the time of measurement by the analyzer 10, and the prediction result is displayed on the display unit 11a. It is configured to do so.
In this way, the mass of the pesticide adhering to one or a plurality of locations on the pesticide adhesion surface of the measurement plate 2 is measured by the analyzer 10. And the agrochemical mass per unit area can be predicted and calculated using the calibration formula, and the operator can know the prediction result. Moreover, while storing this prediction result in the computer 11, and also storing book data, such as an agricultural chemical spraying time, the amount of agricultural chemicals sprayed, the wind direction at the time of agricultural chemicals spraying, and a wind speed, in the computer 11, it is the time of the next spraying. It can also be used to prevent drift.
In this embodiment, the diffuse reflection method is applied. However, a measurement method such as the ATR method can also be applied under a predetermined condition.

<Judgment method (installation of judgment body)>
As shown in FIG. 2 and FIG. 3, a plurality of the determination bodies 1 are installed at appropriate positions inside and outside the field to be sprayed with agricultural chemicals, and after spraying agricultural chemicals, the measuring plate 2 is mounted on a vehicle equipped with the analyzer 10 and the computer 11. By collecting and measuring each using the analyzer 10, it is possible to predict and calculate the mass of the agricultural chemical per unit area at the place where the determination body 1 is installed, and determine the state of agricultural chemical application.
Moreover, it is also possible to detect the drift state at the time of spraying the agricultural chemical by installing not only the agricultural field to which the agricultural chemical is applied but also the non-spreading agricultural field.
Specifically, in the agricultural chemical application target field, the determination bodies 1 are installed at predetermined intervals from the field edge. Moreover, the determination body 1 is installed at a position away from the end of the agricultural chemical spraying target field in a non-target agricultural chemical spraying field or a fence or a farm road in the vicinity of the agricultural chemical spraying target field. The installation positions of the installed judgment bodies 1... Are written as data in the ID tag.
And pesticide is sprayed and the measurement board 2 is collect | recovered. The amount of the pesticide adhering to the measurement plate 2 is measured by the above method, and it can be determined from the measurement plate 2 installed in the agricultural chemical application target field whether or not the amount of the pesticide per unit area is appropriate. From this result, when the spraying amount is insufficient or too large, the spraying amount of the spraying device can be adjusted, or the dilution amount of the pesticide itself can be changed. Moreover, the drift amount can be detected from the measurement plate 2 installed in the agricultural chemical application non-target field, and from this result, up to the position where it can be sprayed up to the wind speed and how far away It is possible to determine whether or not is within an allowable range.

As described above, this is a method for determining the distribution of the amount of agricultural chemicals applied inside and outside the field after the application of agricultural chemicals, and a plurality of determination bodies 1 having non-water-absorbing and planar pesticide adhesion surfaces are installed at measurement locations inside and outside the field. In addition, since the amount of pesticide adhering to the surface of the measurement plate 2 is measured using the analysis device 10, it is possible to detect colorless and transparent pesticides that are easily overlooked by visual confirmation. In addition, by installing the determination body outside the field, it is possible to check the drift situation to the surroundings. In the target field, it is possible to confirm whether the pesticide is attached in the intended amount, and by using an optical analysis technique, the prediction result of the mass of pesticide per unit area can be obtained immediately after measurement. Furthermore, since it has a non-water-absorbing pesticide adhesion surface, it is not affected by the so-called non-uniformity of the pesticide aqueous solution, and the amount of pesticide adhesion can be measured accurately and can be used repeatedly by washing, so that it is economical.
Further, since the determination body 1 is disposed with the pesticide adhesion surface facing upward, it is difficult for the pesticide sprayed from above to flow down and the pesticide adhesion can be accurately measured.
Further, since the determination body 1 is arranged in a state where the agrochemical adhesion surface has rigidity, it is difficult to be deformed when it is installed or collected, and the installation, handling, etc. of the determination body 1 are facilitated.
In addition, since the determination body 1 has the pesticide adhesion surface supported by the set ground height, the pesticide adhesion surface can be set to substantially the same height as the crop and is detected under substantially the same conditions as the pesticide adhering to the crop. be able to.
Further, since the determination body 1 has ID information individually, there is no mistake when collecting and measuring a plurality of determination bodies 1... It becomes possible to easily process the data when post-managing the spraying information, and at the same time, considering the weather conditions at the time of spraying, it is possible to provide feedback when spraying the agricultural chemicals from the next time.
In addition, since the determination body 1 has a predetermined weight, the determination body does not fly or move its position even when it is affected by the wind when sprayed by an unmanned helicopter or the influence of a gust of wind. The stability of the judgment object is improved and it can be accurately detected.
Moreover, since the determination body 1 has the position fixing means, the determination body can be reliably installed at a desired location regardless of land conditions such as undulation of the ground.

The perspective view of the determination body concerning one Example of this invention. The schematic diagram at the time of measurement after pesticide spraying. The top view which concerns on the example of arrangement | positioning of the determination body at the time of agricultural chemical spraying.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Judgment body 2 Measurement board 3 Support stand 4 Top plate part 5 Angle adjustment part 6 Height adjustment part 7 Leg part 8 Grounding foot 9 Fixing part 10 Analyzer 11 Computer

Claims (7)

A method for determining the distribution amount of agricultural chemicals in and outside the field after spraying agricultural chemicals,
Non-water-absorbing, and a plurality of judgment bodies having a planar pesticide adhesion surface are installed at measurement locations inside and outside the field,
A method for determining the distribution of agricultural chemical distribution, wherein the amount of agricultural chemical attached to the surface of the determination body is measured using an optical analysis technique. In the agrochemical application amount distribution judgment method according to claim 1,
The determination body is a method for determining an agrochemical application amount distribution, wherein the agrochemical adhesion surface is arranged upward. In the agrochemical application amount distribution judgment method according to claim 1,
The determination body is formed on the surface of a member having an agrochemical adhesion surface having rigidity. In the agrochemical application amount distribution judgment method according to claim 1,
The determination body is supported so that the set height of the pesticide adhesion surface can be changed. In the agrochemical application amount distribution judgment method according to claim 1,
The said determination body has ID information individually, The agrochemical spraying amount distribution determination method characterized by the above-mentioned. In the agrochemical application amount distribution judgment method according to claim 1,
The determination body has a predetermined weight. In the agrochemical application amount distribution judgment method according to claim 1,
The determination body has a position fixing means.

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