Papers by Viacheslav Adamchuk
Precision Agriculture. …, 2003
Soil mapping is one ofthe key practices associated with site-specific management. Grid sampling a... more Soil mapping is one ofthe key practices associated with site-specific management. Grid sampling at densities of approximately 1 ha provides useful yet insufficient information about the spatial variation in soil fertility. Therefore, an automated soil sensing system for ...
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Abstract. Advancements in soil sensor technology have allowed for comprehensive measurements of s... more Abstract. Advancements in soil sensor technology have allowed for comprehensive measurements of soil physical characteristics. Sensor measurements help in understanding the qualities of the soil rooting zone; they can be used to create detailed soil maps to facilitate the application of site-specific management decisions for agriculture or resource management purposes. Currently, the benefits and widespread use of these advanced methods are hindered by several factors, including the ability to capture several soil properties at once, consistency between measurements, and the labour required to collect the data. This paper describes a partnership between the autonomous electric tractor company Ztractor and McGill University, for the development of a sensor system capable of capturing several soil physical characteristics at one time through on-the-spot measurements linked to the autonomous tractor Bearcub. Integrating traditional measurement techniques with automated functionality, t...
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2009 39th IEEE Frontiers in Education Conference, 2009
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Geoderma, 2011
Most soil properties sensed on-the-go (e.g., electrical conductivity, capacitance, optical reflec... more Most soil properties sensed on-the-go (e.g., electrical conductivity, capacitance, optical reflectance, mechanical resistance and soluble ion activity) are not directly related to the agronomic parameters used to make management decisions. Nonetheless, these sensors provide an opportunity to obtain fine-resolution data about the spatial variability of soil in agricultural fields, rapidly and at a relatively low cost. To process this information,
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In recent years, increasingly popular precision agriculture technology has become one of primary ... more In recent years, increasingly popular precision agriculture technology has become one of primary beneficiaries of geocomputation methods. Modern farmers and their advisors have to deal with multiple field-scale data layers representing spatially variable growing environments. Varying the rate of fertilizers and other agricultural inputs according to local
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Frontiers in Robotics and AI, 2021
In comparison to field crops such as cereals, cotton, hay and grain, specialty crops often requir... more In comparison to field crops such as cereals, cotton, hay and grain, specialty crops often require more resources, are usually more sensitive to sudden changes in growth conditions and are known to produce higher value products. Providing quality and quantity assessment of specialty crops during harvesting is crucial for securing higher returns and improving management practices. Technical advancements in computer and machine vision have improved the detection, quality assessment and yield estimation processes for various fruit crops, but similar methods capable of exporting a detailed yield map for vegetable crops have yet to be fully developed. A machine vision-based yield monitor was designed to perform size categorization and continuous counting of shallots in-situ during the harvesting process. Coupled with a software developed in Python, the system is composed of a video logger and a global navigation satellite system. Computer vision analysis is performed within the tractor w...
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Better crops with plant food, 2010
Abbreviations: N = nitrogen; NO3 = nitrate; K = potassium. Note: Mention of a company or product ... more Abbreviations: N = nitrogen; NO3 = nitrate; K = potassium. Note: Mention of a company or product name does not imply and endorsement or recommendation by the author or by the publisher. The concept of precision agriculture emerged from the belief that the variability of plant-growing conditions is one of the major contributors to field-scale differences in yield, and the idea that it could be beneficial to vary agricultural inputs according to local changes in soil properties (Robert, 1993). To make precision agriculture work, a producer must be able to obtain high quality information about the spatial variability of different soil attributes that may limit yield in specific field areas. The inability to generate such information rapidly and at an acceptable cost using soil sampling and laboratory analysis remains one of the biggest obstacles to the adoption of precision agriculture. Both proximal and remote sensing technologies have been implemented to provide high-density data lay...
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The concept of precision agriculture emerged from the belief that variability of growing conditio... more The concept of precision agriculture emerged from the belief that variability of growing conditions is one of the major contributors to field-scale differences in yield, and that varying the agricultural inputs according to local changes in soil properties could be beneficial. Many producers have already accumulated a yield history from several growing seasons. However, to engage in an effective decision-making process, it is equally important to obtain high quality information about the spatial structure of different soil attributes which may limit the yield in certain areas of the field. The ability to generate such information rapidly and at an acceptable cost remains one of the biggest limitations. Conducting a variable rate application of fertilizers, lime, and other agricultural inputs without accurate soil maps is frequently inappropriate and may result in economical losses. Therefore, sensor development is expected to increase the effectiveness of precision agriculture. In p...
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Wireless technology is increasingly used to monitor temporal changes in soil conditions. Because ... more Wireless technology is increasingly used to monitor temporal changes in soil conditions. Because of the limited number of such monitoring units that can be economically installed throughout an agricultural field, it is critical to identify proper locations for these units. On-the-go soil sensing technology provides the opportunity to rapidly obtain high-resolution data on soil spatial variability at a relatively low cost. Prescribing representative monitoring sites based on multiple sensor-based data layers is an important process, yet in practice, this selection is conducted in a very subjective manner. This research provides an analytical methodology for assessing the quality of selection of a set of strategic locations in an agricultural field. The methodology is shown using a combination of apparent soil electrical conductivity (EC a) and field elevation maps to identify sites for water content monitoring.
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Precision farming is a systems approach to managing soils and crops to reduce decision uncertaint... more Precision farming is a systems approach to managing soils and crops to reduce decision uncertainty through better understanding and management of spatial and temporal variability. Much research has been conducted to develop strategies for site-specific crop management in different agricultural systems, with mixed results. Applications in which the sole focus has been on variable rate technology for managing spatial variation at the sub-field level have often failed to deliver significant and consistent improvements in crop yields, profitability, input use efficiency, and environmental impact. More robust, dynamic, and integrated forms of site-specific management are currently being developed. They require better techniques for characterizing and understanding crop growth determinants at the spatial and temporal scales that are most relevant for decision-making. This level of detailed understanding pays most in high-value crops, where more precise management can improve both quantity...
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The efficiency of a center pivot irrigation system is greatly dependent on the ability to provide... more The efficiency of a center pivot irrigation system is greatly dependent on the ability to provide the water supply needed to meet the demands of the rowing crop. While limited water supplies may educe crop yield due to water stress, excessive irrigation may result in wasted resources and, if extreme, may also reduce yields. The optimized need for irrigation water changes temporally and spatially. Various methods have been deployed to focus on either level of variability. Thus, soil sensor telemetry and crop modeling frequently allow improved irrigation scheduling. On the other hand, dense-resolution proximal soil sensing allows identifying spatial variability of topsoil water storage capacity that also affects the needs for irrigated water. The research intends to integrate on-the- goal soil sensing technology with stationary sensor networks to supplement decision making processes to optimize irrigation scheduling as well as to prescribe site-specific water management if appropriate...
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The Journal of Extension, 2010
The study reported here examined the effectiveness of educational robotics combined with GPS/GIS ... more The study reported here examined the effectiveness of educational robotics combined with GPS/GIS technologies used as "digital manipulatives" in the teaching of concepts in science, engineering, and technology. Based on the success of previous summer camps, the study also examined a scaling-up of the intervention from 38 participants to 147. The 147 youth (ages 10-15) participated in one of six summer camps held in Nebraska during 2008. Results indicate that participants scored higher on the content posttest than the pretest. The study further examined the differential results. The article makes recommendations for further studies, while acknowledging the potential power of digital manipulatives. Robots, GPS/GIS, and Programming Technologies: The Power of "Digital Manipulatives" in Youth Extension Experien 03/29/10 09:03:38
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In our technology rich world, the educational areas of science, technology, engineering, and math... more In our technology rich world, the educational areas of science, technology, engineering, and mathematics (STEM) play an increasingly essential role in developing well-prepared specialists for the 21 st century workplace. Unfortunately, interest in theses areas has been declining for a few decades. Various innovative educational initiatives in formal and informal learning environments have been undertaken nationally to attempt to encourage STEM-oriented learning. Funded by the National Science Foundation, the particular program described in this paper focuses on middle school youth in non-formal learning environments. The program integrates educational robotics, Global Positioning System (GPS) and geographic information system (GIS) technologies to provide educational experiences through summer camps, 4-H clubs and afterschool programs. The project’s impact was assessed in terms of: a) youth learning of computer programming, mathematics, geospatial concepts, and engineering/robotics ...
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Papers by Viacheslav Adamchuk