Speed Sprayer Research Articles

Development of Location-Data-Based Orchard Passage Map Generation Method

Currently, pest control work using speed sprayers results in increasing numbers of safety accidents such as worker pesticide poisoning and rollover of vehicles during work. To address this, there is growing interest in autonomous driving technology for speed sprayers. To commercialize and rapidly expand the use of self-driving speed sprayers, an economically efficient self-driving speed sprayer using a minimum number of sensors is essential. This study developed an orchard passage map using location data acquired from positioning sensors to generate autonomous driving paths, without installing additional sensors. The method for creating the orchard passage map presented in this study was to create paths using location data obtained by manually driving the speed sprayer and merging them. In addition, to apply the orchard passage map when operating autonomously, a method is introduced for generating an autonomous driving path for the work start point movement path, work path, and return point movement path.

Design and physical model of an electromechanical plant sprayer

The article explores the experience of developed countries in creating and implementing mobile electromechanical devices for plant processing, highlighting the low energy efficiency indicators and high fuel and lubricant costs of equipment running on organic fuel in the republic. The study emphasizes the relevance of transferring agricultural tractors with electric drives in the context of Uzbekistan. The composition and degree of structural compatibility of the mobile electromechanical device were designed based on operating modes, creating opportunities for organizing general services for farms. The energy efficiency indicators of a mobile electromechanical device powered by centralized and mobile energy sources were analyzed, determining that charging from a mobile power station operating on renewable energy sources is optimal. The following parameters were established for the area that can be processed by a mobile electromechanical device in one load (when hanging grain fields): equipment weight (including working solution and battery) - 420 kg, operating speed sprayer speed 11 km/s, and electric motor power 5.8 kW. Based on these parameters, the area that can be processed in one load is 2.46 hectares. This study provides valuable insights into the potential benefits of using mobile electromechanical devices powered by renewable energy sources in Uzbekistan's agricultural sector.

제주감귤과원 생력화를 위한 무인고속살포기 적용에 관한 연구

제주감귤과원 생력화를 위한 무인고속살포기 적용에 관한 연구

Design and experimentation of remote driving system for robotic speed sprayer operating in orchard environment

AbstractThe automation of agricultural machines is an irreversible trend considering the demand for improved productivity and lack of labor in handling agricultural tasks. Unstructured working environments and weather often inhibit a seemingly simple task from being fully autonomously performed. In this context, we propose a remote driving system (RDS) to aid agricultural machines designed to operate autonomously. Particularly, we modify a commercial speed sprayer for orchard environments into a robotic speed sprayer to evaluate the proposed RDS's usability and test three sensor configurations in terms of human performance. Furthermore, we propose a confidence error ellipse‐based task performance measure to evaluate human performance. In addition, we present field experimental results describing how the sensor configurations affect human performance. We find that a combination of a semiautonomous line tracking device and a wide‐angle camera is the most effective for spraying. Finally, we discuss how to improve the proposed RDS in terms of usability and obtain a more accurate measure of human performance.

Development of a Moving Baseline RTK/Motion Sensor-Integrated Positioning-Based Autonomous Driving Algorithm for a Speed Sprayer

To address problems such as pesticide poisoning and accidents during pest control work and to enable efficient work in this area, the development of a competitively prices speed sprayer with autonomous driving is required. Accordingly, in order to contribute to developing the commercialization of a low-cost autonomous driving speed sprayer, we developed a positioning algorithm and an autonomous driving-based spraying algorithm by using two low-cost global navigation satellite system (GNSS) modules and a low-cost motion sensor. In order to provide stable navigation solutions from the autonomous driving hardware despite disturbances from the electromagnetic field generated by the spraying device, the proposed positioning algorithm, a moving baseline (MB) real-time kinematic (RTK)/motion sensor-integrated positioning algorithm, was developed using a loosely coupled extended Kalman filter. To compare the yaw estimation performance provided by the MB RTK positioning technique, yaw was calculated by post-processing with two types of positioning algorithms: the MB RTK/motion sensor-integrated positioning algorithm and the GNSS RTK/motion sensor-integrated positioning algorithm. In the static test, the precision of the yaw provided by the MB RTK/motion sensor-integrated positioning algorithm was 0.14°, but with the GNSS RTK/motion sensor-integrated positioning algorithm, the precision of the yaw was 4.53°. The static test results confirmed that the proposed positioning algorithm using the yaw provided by the MB RTK positioning technique based on two GNSS modules for measurement, precisely estimated the yaw even when the spray engine was operating. To perform autonomous driving and spraying, an autonomous driving-based spraying algorithm was developed using the MB RTK/motion sensor-integrated positioning algorithm. As a result of two performance tests based on the proposed algorithm in an orchard, autonomous driving and spraying were stably performed according to the set autonomous driving route and spraying method, and the root mean square (RMS) of the path-following error was 0.06 m.

Performance Assessment of Farm Machinery for Persimmon Fruit Cultivation in a Japanese Mountainous Area

Japanese agriculture is facing a decrease in agricultural workers. Mechanization, both to save time and reduce physical input, is essential to solving this issue. Recent worldwide progress in Internet-of-things technology has enabled the application of remote-controlled and unmanned machinery in agriculture. This study was conducted in the Gojo-Yoshino mountainous region in Nara, Japan, which is famous for its persimmon cultivation. The performance of newly introduced smart agricultural machinery was studied in the field by simulating cultivation work. The results showed that the remote-control weeder, speed sprayer, and remote-control mini crawler carrier saved 90%, 75%, and 5% of weeding, spraying, and harvesting times, respectively, when compared with conventional methods. Such time savings led to an 8% decrease in the total working time spent on persimmon cultivation. In addition, using the speed sprayer showed improvement in the fruit’s quality. Results of the power assist suits did not show a time-saving effect but showed a reduction of physical burden. These results suggest that the mechanization of persimmon cultivation is efficient and labor-saving, and satisfies the need for farmers. However, the high investment costs remain an issue in extending mechanization to the region.

Performance Evaluation of an Autonomously Driven Agricultural Vehicle in an Orchard Environment.

To address the problems of inefficient agricultural production and labor shortages, there has been active research to develop autonomously driven agricultural machines, using advanced sensors and ICT technology. Autonomously driven speed sprayers can also reduce accidents such as the pesticide poisoning of farmers, and vehicle overturn that frequently occur during spraying work in orchards. To develop a commercial, autonomously driven speed sprayer, we developed a prototype of an autonomously driven agricultural vehicle, and conducted performance evaluations in an orchard environment. A prototype of the agricultural vehicle was created using a rubber-tracked vehicle equipped with two AC motors. A prototype of the autonomous driving hardware consisted of a GNSS module, a motion sensor, an embedded board, and an LTE module, and it was made for less than $1000. Additional software, including a sensor fusion algorithm for positioning and a path-tracking algorithm for autonomous driving, were implemented. Then, the performance of the autonomous driving agricultural vehicle was evaluated based on two trajectories in an apple farm. The results of the field test determined the RMS, and the maximums of the path-following errors were 0.10 m, 0.34 m, respectively.

Preliminary Results of the Development of a Single-Frequency GNSS RTK-Based Autonomous Driving System for a Speed Sprayer

The speed sprayer plays an important role in fruit orchards as it undertakes spraying to prevent damage by blight and harmful insects. Although farmers who use speed sprayers wear protective devices, pesticide poisoning incidents and damage can occur when pesticides penetrate the skin. In addition, skilled manpower in agriculture is decreasing due to aging populations in farming villages. To overcome these problems, we aim to develop an autonomous driving system using a single-frequency GNSS RTK for commercialization of an autonomous driving speed sprayer. Therefore, in this study, path generation and a tracking system based on the single-frequency GNSS RTK are developed and the preliminary results of tests of this system are analyzed. The field test of the developed system showed positional accuracy of 0.01 m.

A study of risk factors for the possible cases of acute occupational pesticide poisoning of orchard farmers in some parts of south Chungcheong province.

BackgroundThe objective of the present study is to identify differences in the prevalence of acute occupational pesticide poisoning across Korean orchard farmers' farming characteristics and the risk factors that have an effect on acute occupational pesticide poisoning.MethodsFor 3 years (2014, 2015, and 2017), a questionnaire survey was conducted on 394 orchard farmers in some parts of south Chungcheong Province in relation to pesticide poisoning. 323 orchard farmers who responded to acute occupational pesticide poisoning were included for final analysis. With acute occupational pesticide poisoning as the dependent variable, a χ2 test and a multiple logistic regression analysis were conducted.ResultsThe results of the prevalence of acute occupational pesticide poisoning across farming characteristics showed that the group wearing 4 or more pesticide personal protective equipment (PPE) had a lower prevalence of acute occupational pesticide poisoning than the group wearing 3 or less pesticide PPE (p < 0.05). Furthermore, an analysis by area of fruit farming revealed that the group with more than 12,000m2 in the area of fruit farming had a higher prevalence of acute occupational pesticide poisoning (p < 0.05). Orchard farmers mainly use a speed sprayer to spray pesticides, and the speed sprayer can be categorized by presence of cabin. The analysis of the prevalence of acute occupational pesticide poisoning by speed sprayer's cabin existence found that existence of speed sprayer's cabin did not show a statistically significant difference in the prevalence of acute occupational pesticide poisoning.ConclusionsThe present study analyzed the prevalence of acute occupational pesticide poisoning depending on the speed sprayer's cabin existence and found no significant difference. The fact that famers using the cabinless style speed sprayer shows a higher percentage in wearing PPE than those using the cabin style speed sprayer is suggested to elucidate the result. As the first study in Korea which examined the prevalence of acute occupational pesticide poisoning by speed sprayer's cabin existence, the present study proposes the expected effect that increase of wearing pesticide PPE along with employ of speed sprayer's cabin can reduce the prevalence of acute occupational pesticide poisoning among orchard farmers.

SS기용 노즐의 분판/회전판 형상에 따른 분무 특성

The spraying characteristics of nozzle used in a speed sprayer which is the machine for applying pesticides to plant are numerically investigated. The nozzle consists of a disc and whirl and makes liquid pesticides fine particles. According to the shape of disk/whirl of nozzle with a various inner pressure(15~25 bar), the injection angle and the amount of mass flux of nozzle are analyzed. The injection angles of nozzles with the all-in-one design(new and Albuz nozzle) are larger than that of combination nozzle(Con2, Con3, and ConS) at a given inner pressure. But the mass flux of new nozzle is the same of Con2 and ConS at a given pressure.

Whole body dosimetry and risk assessment of agricultural operator exposure to the fungicide kresoxim-methyl in apple orchards

This study examined dermal and inhalation exposure of agricultural operators to kresoxim-methyl during pesticide mixing/loading and speed sprayer application (10 replicates, each of 3000 L of spray suspension) in an apple orchard and performed risk assessment. For the whole body dosimetry (WBD) exposure protocol, outer clothing, inner clothing, gauze, and nitrile gloves were examined to measure dermal exposure. In contrast, an IOM (institute of occupational medicine) sampler with a glass fiber filter was used to measure inhalation exposure. Analytical method accuracy in the exposure matrices was evaluated by a field recovery study. The dermal and inhalation exposure amounts for mixing/loading were 9.7 mg [0.002% of the total mixed/loaded active ingredient (a.i.)] and 1.2 µg (1.7 × 10−6% of the total mixed/loaded a.i.), respectively. The body parts more exposed were the forearms (35.5%), chest & stomach (30.2%), and hands (17.9%). During application, the dermal and inhalation exposure amounts were 66.5 mg (0.009% of the total applied a.i) and 34.8 µg (4.6 × 10−5% of the total applied a.i.), respectively. The shins (18.5%) and chest & stomach (16.0%) were exposed to higher proportion of pesticide, followed by the thighs (15.8%) and back (14.7%). Comparing the exposure pattern as assessed by the WBD method in the present study with the patch method as in our previous study, the ADE (actual dermal exposure) as measured by the WBD method was 25 times less than that measured by the patch method. The daily exposure amounts of ADE and AIE (actual inhalation exposure) for mixing/loading were 711.8 µg/day and 4.3 µg/day, respectively, whereas the amounts of ADE and AIE for application were 1825.8 µg/day and 116.1 µg/day. In risk assessment of the mixing/loading and application scenarios, the AOEL (acceptable operator exposure level) of kresoxim-methyl was used as the reference dose to show that the RI (risk index) was much lower than 1, indicating that agricultural operators are at low risk of exposure to kresoxim-methyl.

국내 사과원의 재배형태 및 농약 살포방법 조사

A survey was conducted to research on planting system and pesticide spray methods including spray volume, sprayer types, and spray nozzles used in apple orchards. The survey was deployed to 395 farmers in 17 cities and towns including 7 regions which are major producers of apple via interview. Major apple varieties were Fuji (79.2%) and Hongro (50.9%) and high density planting system was mainly used in apple orchards (distance between rows: 4.0-4.5 m (73.1%); planting distance: 1.5-3.5 m (88.6%); canopy height: 3.0-4.5 m (88.2%)). The percentages of sprayer types were 77.6% and 22.1% for speed sprayer (airblast sprayer) and power sprayer, respectively. Spray volumes per 10a were 250-300 L in April, the month of spraying the lowest volume, and 300-400 L in June-August, the months of spraying the highest volume. Significant difference in spray volumes were not observed between conventional planting and high density planting, but regional spray volume showed significant difference. The main nozzles used by apple farmers using power sprayers were super jet nozzle (45%), super wide nozzle (26%), and 2-3 vertical head nozzle (25%). The results will helpful to establish practical agrochemicals management policy including suggestion of pesticide spray volume and evaluation of pesticide residue data and efficacy data.

일부 농업인에서의 농약살포방식 및 보호구 착용에 따른 유기인계 농약노출평가

본 연구는 국내 일부 농업인을 대상으로 유기인계 농약 노출수준과 농약살포 특성의 관련성을 규명하기 위하여 수행되었다. 소변시료를 채취하여 GC/MSD와 GC/MS/MS를 이용하여 분석하였으며, 소변 중 DMP, DMTP, DEP, DETP를 대상으로 검출률 및 노출수준을 평가 하였다. 검출률은 DMP, DMTP에서 캡이 없는 SS살포기가 캡이 있는 SS살포기보다 높았고, 보호구 착용률이 낮을수록 높았다. 노출수준은 동력 분무기가 가장 높았고, 캡이 있는 SS살포기에서 낮게 나타났다. 또한, 착용 보호구 개수가 증가할수록 노출수준이 낮아짐을 확인할 수 있었다. 검출률은 카이제곱, 노출수준 비교는 연령 및 살포방법을 보정한 GLM을 이용하여 분석하였다. This study was conducted to evaluate the relations between the exposure level of organophosphates (OPs) pesticide and application factors among rural farmers. The urinary dialkylphosphates, metabolites of organophosphorus pesticides, including DMP, DEP, DMTP and DETP were analyzed by GC/MSD and GC/MS/MS. The DMP and DMTP were detected more in the use of a speed sprayer without cap than with a capped one. Also, the less farmers wore the personal protective equipment (PPE), the more these were detected. The amount of organophosphorus exposure was the highest in the use of a power sprayer. However, it was low when a farmer applied pesticides with a speed sprayer with cap and wore more PPE. In this study, the detection rate was analyzed by chi-square test, the exposure level of OPs was analyzed by a generalized linear model.

살포 방법에 의한 살균제 Dithianon의 감귤 잎 부착량 비교

Abstract In order to obtain efficient control effect of the pesticide, it is important to ensure uniformadhesion to the desired plant parts at the right time. Pesticide spray method (application technology) is animportant factor affecting the efficacy and crops persistent expression. The aim of this study was to developan efficient system to investigate the coating weight distribution of citrus leaves due to the differencebetween the nozzle and spray sprinkler system using dithianon used in citrus scab. Other An, engine typesprayer was used as the control. Speed sprayer and different sprinklers were wsed to way the depositamounts of dithianon on citrus leaves. The test was conducted at the National Institute of Horticultural HerbalScience Citrus Research Station, located in the circle citrus Jeju Island. In order to examine whether thecitrus orchard spray and the evenl on the whole, dithianon (43% flowable 1000-fold dilution) was sprayed,filter paper and leaves were analyzed by the height as top, middle, bottom. Speed sprayer the was mosteffective on depositing at the middle position, of the leaves. All other sprays the leaces except the dry mistsprinkler were not effective enough to deposit on the back sides. To achieve more deposits on the highposition leaves, an improve ment in the nozzle and an efficient power system of sprayer were needed. Key words dithianon, spray, citrus leaf, deposit amount<< ORCIDSu-Myeong Honghttp://orcid.org/0000-0003-2035-5039

Development of Riding Electric Speed Sprayer

Development of Riding Electric Speed Sprayer

Effectiveness and Optimum Timing of Flubendiamide Application by a Speed Sprayer for Control of Young Larvae of Stalkborer, Cossus insularis in Dwarf Apple Orchards.

Effectiveness and Optimum Timing of Flubendiamide Application by a Speed Sprayer for Control of Young Larvae of Stalkborer, <i>Cossus insularis </i>in Dwarf Apple Orchards.

Probabilistic Exposure Assessment for Applicators during Treatment of the Fungicide Kresoxim-methyl on an Apple Orchard by a Speed Sprayer.

Probabilistic exposure and risk assessment of kresoxim-methyl were conducted for agricultural applicators during preparation of spray suspension and application with a speed sprayer on an apple orchard. The preparation and application of 1000 L of spray suspension were repeated 30 times. Several exposure matrices, including patches, cotton gloves, socks, masks, and XAD-2 resin, were used to measure the potential exposure for workers. The analytical methods were fully validated to guarantee the precision and accuracy of analysis. The exposure amount on hands for mixer/loader was 0.7 mg [95% confidence interval (CI) from 0.02 to 2.4], taking 0.0005% (95% CI from 1.2 × 10(-5) to 0.001) of total prepared active ingredient. During application of kresoxim-methyl, the amount of dermal exposure was 17.5 mg (95% CI from 9.3 to 28.9), corresponding to 0.010% (95% CI from 0.006 to 0.017) of total applied active ingredient. The major exposure parts of the body were thighs and shins, with correlation coefficients of 0.53 and 0.43, respectively. The inhalation exposure during application were estimated as 6.8 ng (95% CI from 0.4 to 17.0), being 0.04% (95% CI from 0.004 to 0.06) of the dermal exposure. The calculated absorbable quantities of exposures for mixer/loader and applicator were 2.1 × 10(-4) mg/day (95% CI from 5.0 × 10(-6) to 7.2 × 10(-4)) and 2.3 mg/day (95% CI from 1.2 to 3.8), respectively. For risk assessment, the margin of safety of all working activities was much higher than 1, indicating that the possibility of risk to kresoxim-methyl was unlikely.

Exposure and Risk Assessment of Operators to Insecticide Acetamiprid during Treatment on Apple Orchard

Occupational exposure and risk assessment were conducted to evaluate the safety of operators when insecticide acetamiprid was applied to apple orchard using a speed sprayer. Dermal patches, cotton gloves, socks, and masks were used to monitor the dermal exposure, and personal air pump with solid sorbent was used to measure the potential inhalation exposure. In validation to analytical methods, the limit of detection and limit of quantitation were 0.25 ng and 1 ng, respectively. Good reproducibility (coefficient variation < 4%), linearity (coefficient determination > 0.999), and recovery (85.3-118.2%) were obtained. Trapping efficiency of solid sorbent was 96.4% while breakthrough did not occur. Only hand exposure was measured on the gloves during mixing/loading to give <TEX>$33-1,132{\mu}g$</TEX>. Exposure amount of operator 3 among 4 workers was noticeably high. The total volumes of spray liquid for operators were <TEX>$535-1,235mL{\cdot}h^{-1}$</TEX>, corresponding to 0.03-0.08% of the applied spray solution. Highest contaminated parts of body were thighs, chest, and lower legs. The inhalation exposure ratio to the total application amount was significantly low. However, wind seemed to affect the inhalation exposure of operator. For risk assessment, margin of safety was calculated by the application of cloth and dermal penetration rate to obtain values of much larger than 1 in all cases. Therefore, health risk of operators during treatment of acetamiprid in apple orchard could be of least possibility.

변형된 UK-POEM을 이용한 한국 과수 농약살포자 위해성 평가

본 연구는 우리나라 과수 농약살포자의 농약 노출량 산정과 위해성 평가를 위하여 수행되었다. 우리나라 과수에 사용되고 있는 약제 중 분무의 형태로 이용되는 97종의 품목에 대하여 사용방법에 대한 정보를 수집하였고, 이를 근거로 농약 노출량을 국내실정에 맞게 변형한 UK-POEM(United Kingdom-Predicted Operator Exposure Model)모델을 이용하여 산정하였다. 산정된 노출량을 세계 각 기관에서 발표된 농약살포자 노출허용량과 비교하여 위해성을 평가하였다. Speed sprayer (SS기)를 이용하여 살포작업을 하는 경우 개인보호장비(PPE)를 착용하지 않았을 때 74.2%, 개인 보호장비를 착용하였을 때 42.3%가 위해성이 있는 것으로 나타났다. 또한 동력분무기(MS기)를 이용하였을 경우 개인보호장비(PPE)를 착용하지 않았을 때 64.1%, 개인 보호장비를 착용하였을 때 19.4%가 위해성이 있는 것으로 나타났다. 이러한 결과는 현재 우리나라 과수 농약살포자의 농약 노출로 인한 위해성이 우려된다는 것을 의미한다. This study was performed in order to assess the risk of korean orchard worker due to pesticide exposure. The amount of pesticide exposure was calculated based on the informations of 97 kind of items that are used the form of a spraying in Korean orchard. The risks of these pesticides were assessed to compare the exposure amount with AOEL (acceptable operator exposure level) which was released form developed countries. When the operator sprayed pesticides using speed sprayer, 74.2% of pesticide items showed the risk for operator if the operator have not worn the personal protective equipment (PPE), and 42.3% of pesticide items showed the risk for operator if the operator have worn the PPE. In case of using motor sprayer, 64.1% of pesticide items showed the risk for operator if the operator have not worn the PPE, and 19.4% of pesticide items showed the risk for operator if the operator have worn the PPE. This result was indicated that the risk of pesticide against the operator was very high in korean orchard operator.

변형된 UK-POEM을 이용한 한국 논 농약살포자의 위해성 평가

This study was performed in order to assess the risk of korean orchard worker due to pesticide exposure. The amount of pesticide exposure was calculated based on the informations of 97 kind of items that are used the form of a spraying in Korean orchard. The risks of these pesticides were assessed to compare the exposure amount with AOEL (acceptable operator exposure level) which was released form developed countries. When the operator sprayed pesticides using speed sprayer, 74.2% of pesticide items showed the risk for operator if the operator have not worn the personal protective equipment (PPE), and 42.3% of pesticide items showed the risk for operator if the operator have worn the PPE. In case of using motor sprayer, 64.1% of pesticide items showed the risk for operator if the operator have not worn the PPE, and 19.4% of pesticide items showed the risk for operator if the operator have worn the PPE. This result was indicated that the risk of pesticide against the operator was very high in korean orchard operator.